EDBT 2026 Demo / reviewers in the wild / expert
Hiroaki Ogata
dblp:35/872
· DBLP profile ↗
235ranked-venue papers
14as first author
87since 2021 · last 2026
0000-0001-5216-1576ORCID · corroborated
Domains — the database's venue-derived domains; a paper can count in several
Applied, interdisciplinary, general and emerging computing · 226 · 13 first-author · 85 since 2021Human-computer interaction and ubiquitous computing · 58 · 5 first-author · 22 since 2021Artificial intelligence and machine learning · 4 · 2 since 2021Databases, data management, data science and information retrieval · 3Graphics, computer vision, multimedia, augmented reality and games · 2 · 1 since 2021
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2026 | Explain-from-Stroke: Capturing Invisible Learning Processes Through Handwriting Dynamics AnalysisabstractEducational assessment requires understanding student problem-solving processes, not just final answers. Current AI-driven analytics focus on static outcomes, missing valuable insights from temporal dynamics. Explain-from-Stroke is a practical framework that captures invisible learning processes by integrating handwriting dynamics with vision-language models. The system extracts temporal features such as writing speed, pauses, and revisions, providing additional context for generating meaningful insights into hidden aspects of student reasoning. Using real classroom data from a Japanese secondary school, the model shows an 18.2% improvement in cognitive depth analysis compared with static approaches. This work provides educators with an accessible method to analyze learning processes using standard tablet technology. Ryosuke Nakamoto, Brendan Flanagan, Kohei Nakamura, Hiroaki Ogata |
AAAI | 4 |
| 2026 | Cyclic Adaptive Private Synthesis for Sharing Real-World Data in EducationabstractThe rapid adoption of digital technologies has greatly increased the volume of real-world data (RWD) in education. While these data offer significant opportunities for advancing learning analytics (LA), secondary use for research is constrained by privacy concerns. Differentially private synthetic data generation is regarded as the gold-standard approach to sharing sensitive data, yet studies on the private synthesis of educational data remain very scarce and rely predominantly on large, low-dimensional open datasets. Educational RWD, however, are typically high-dimensional and small in sample size, leaving the potential of private synthesis underexplored. Moreover, because educational practice is inherently iterative, data sharing is continual rather than one-off, making a traditional one-shot synthesis approach suboptimal. To address these challenges, we propose the Cyclic Adaptive Private Synthesis (CAPS) framework and evaluate it on authentic RWD. By iteratively sharing RWD, CAPS not only fosters open science, but also offers rich opportunities of design-based research (DBR), thereby amplifying the impact of LA. Our case study using actual RWD demonstrates that CAPS outperforms a one-shot baseline while highlighting challenges that warrant further investigation. Overall, this work offers a crucial first step towards privacy-preserving sharing of educational RWD and expands the possibilities for open science and DBR in LA. Hibiki Ito, Chia-Yu Hsu 0002, Hiroaki Ogata |
LAK | 3 |
| 2025 | Supporting Learning Design for Sustainable Development Using Large Language Models
Patrick Ocheja, Shatha N. Alkhasawneh, Emily Theophilou, Hiroaki Ogata, Davinia Hernández Leo |
EC-TEL (2) | 4 |
| 2025 | Enhancing Peer Interaction Quantity and Quality: Impact of Behavior, Engagement, and KnowledgeabstractEnhancing peer interactions is a crucial topic in collaborative learning, where both the quantity and quality of interaction are emphasized. Despite its importance, the social and emotional aspects of collaborative learning, such as peer interactions, remain underexplored. This study applied learning analytics to examine how learner similarity in learning behavior, engagement, and knowledge influences the quantity and quality of peer interaction within the peer help system. Three aspects were analyzed using logistic regression and ordinal logistic regression: whether learners reply to questions, whether they evaluate the help received, and the evaluation scores given by askers to helpers. The results reveal that knowledge similarity has a significant negative impact on whether learners reply to questions, while no factors were found to significantly impact whether learners evaluate the help received. However, knowledge similarity showed a significant positive effect on evaluation scores. These findings provide insights into the complexity of learner similarity in shaping peer interactions and offer implications for designing methods that balance homogeneity and heterogeneity to enhance peer interactions in computer-supported collaborative learning environments. Yu-Tung Chen, Peixuan Jiang, Changhao Liang, Hiroaki Ogata |
ICALT | 4 |
| 2025 | ARCHIE: Exploring Language Learner Behaviors in LLM Chatbot-Supported Active Reading Log Data with Epistemic Network Analysis
Steve Woollaston, Brendan Flanagan, Patrick Ocheja, Yuko Toyokawa, Hiroaki Ogata |
LAK | 5 |
| 2024 | Evaluating Productivity of Learning Habits Using Math Learning Logs: Do K12 Learners Manage Their Time Effectively?
Chia-Yu Hsu 0002, Izumi Horikoshi, Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
EC-TEL (1) | 5 |
| 2024 | An Automated Impasse Detection System Based on the Analysis of Self-Explanations in MathematicsabstractIn online mathematics education, self-explanation is increasingly recognized as a key tool for improving learning outcomes. Identifying learning impasses, which present significant educational challenges, is crucial. Typically, detecting these impasses demands considerable effort from educators to manually review and identify issues in students’ mathematical reasoning.This paper introduces a fully automated impasse detection system designed for online math learning that leverages self-explanations. The system collects high-quality data from students working on the same quizzes, generates example answers, and uses these as benchmarks to identify where students are struggling. The system architecture is described in detail, focusing on the methods used to gather and validate high-quality self-explanation data.Empirical analysis using text regression models shows promising results: the models predict self-explanation scores with an error rate of 0.585 for validation data and 0.655 for evaluation data. While there are variations in scoring accuracy across different mathematical topics, the findings suggest that the system has the potential to significantly improve mathematics education by automating the detection of learning impasses. Ryosuke Nakamoto, Brendan Flanagan, Yiling Dai, Kyosuke Takami, Hiroaki Ogata |
ICALT | 5 |
| 2024 | Auto-Scoring of Math Self-Explanations by Combining Visual and Language AnalysisabstractIn the field of mathematics education, self-explanation is recognized as a critical facilitator for learners to articulate their understanding of complex mathematical concepts and problem-solving techniques. With the emergence of digital learning platforms, the potential to utilize such self-explanations for automated evaluation has expanded, yet significant challenges remain. This study introduces a method that integrates vision and language models to enhance the accuracy of automated evaluations of self-explanations in mathematics quizzes. By leveraging the CLIP encoder, we utilize features from both handwritten images and textual self-explanations, aiming to incorporate the characteristics of handwritten solutions that have been overlooked by text-only evaluations. Models were developed to include self-explanations alone (baseline) and those that integrate image features, using both the original and a fine-tuned CLIP encoder adapted to our dataset of self-explanations and handwritten images. Experimental results demonstrated that the model utilizing the fine-tuned CLIP significantly outperformed the baseline, showing a notable reduction in MAE. Conversely, the model employing the original CLIP encoder exhibited decreased performance compared to the baseline, revealing the complex interplay between integrating self-explanations and image features. These findings suggest that the benefits of embedding image features depend on the quality and appropriateness of the visual data incorporated. Ryosuke Nakamoto, Brendan Flanagan, Yiling Dai, Kyosuke Takami, Hiroaki Ogata |
ICALT | 5 |
| 2024 | Supporting Students' Post-Exam Reflection Needs in College Automation Engineering Course Using LLMabstractPost-exam reflection is critical in helping students consolidate knowledge acquired during a course, enabling them to apply this understanding in future professional contexts. This study investigates the effectiveness of Mirai, a large language model-based (LLM) chatbot, in supporting students' post-exam reflection needs in an Automation Engineering course. Through a controlled experiment, we explored how context-tuned and non-context-tuned versions of Mirai impacted students' reflection habits, help-seeking behaviors, and perceptions of the tool. Students interact with the chatbot to clarify exam questions and receive personalized explanations. A a surveys based on the extended technology acceptance model (exTAM) was conducted and the resulting data was analyzed. We assessed the efficacy of Mirai in facilitating a deeper understanding of exam-related material, improving students' knowledge, engagement and performance. The findings from this study provide insights into the immediate educational benefits of LLM-based tools, their acceptance among students, and their role in enhancing learning outcomes in engineering education. Edward Anoliefo, Patrick Ocheja, Regina Ochonu, Brendan Flanagan, Hiroaki Ogata |
ICCE | 5 |
| 2024 | Extraction of Important Characteristics for Data-Informed Guidance and Counseling from Daily Usage Log DataabstractIn many schools, teachers ensure that learners acquire academic knowledge and competences and promote their comprehensive psychological and social development through a process known as Guidance and Counseling (G&C). However, this process often involves dealing with difficult tasks and requires considerable effort from teachers. In recent years, as ICT tools have become more common, log data on daily use and learning log data have accumulated. These data have enabled teachers to understand leamer processes. Utilizing data across contexts is expected to deepen learners understanding, which is the basis of G&C. However, despite these needs and potential, the use of data for G&C has not yet been fully explored. Therefore, this study examines how the log data accumulated in the Goal-Oriented Active Learner (GOAL) system can be used by teachers to understand learners. Specifically, we extracted the characteristics of each learner's situation for various contexts from the log data, which can capture learning and daily routines. We then interviewed two teachers to determine how the visualized characteristics might be useful for G&C. The results suggest that the visualized characteristics are valuable for understanding learners' conditions both inside and outside of school, and these characteristics could support teachers' G&C activities, transcending specific subjects and activities. Junya Atake, Chia-Yu Hsu 0002, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 4 |
| 2024 | Comparison of Learners' Self-Direction Behavior Across Contexts and PhasesabstractThis study investigates the transferability of Self-Direction behavior across different contexts and phases of learning using the GOAL system. Self-directed learning (SDL) is crucial for lifelong learning. It is significantly influenced by Self- Direction Skills (SDS), a meta-skill that is said to be transferable across different contexts, including the ability to identify learning needs, set goals, select strategies, and evaluate outcomes. Utilizing log data collected from Japanese junior high schools and analyzed using the iSAT system, we explored how Self-Direction behavior acquired in one context can be transferred to another and how these skills vary across the SDL phases. The results indicated that the Self-Direction behavior transferred between different activities and phases. In addition, the way of transfer is suggested to vary from phase and context. This study provides useful insights for the design and guidance of SDL support systems in educational programs. It suggests that it is important for educators to identify factors that facilitate the development and transfer of SDS. Junya Atake, Chia-Yu Hsu 0002, Huiyong Li 0002, Izumi Horikoshi, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 6 |
| 2024 | Relationship Between Students' Scores in Weekly Tests and Final ExamabstractThis study investigates the relationship between students' scores in weekly tests and the unit exam. By analyzing score patterns, we found that students who consistently scored high on weekly tests performed better in the unit exam, whereas those who struggled with the unit's contents early tended to score lower. These findings emphasize the importance of using weekly test scores as formative assessments to help students monitor their progress and adjust their learning. Satomi Hamada, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 3 |
| 2024 | What Insights Are Gained from Students' Trace Data in Homework?abstractRecent studies have emphasized the importance of formative assessments in improving teaching and learning. This study investigated what insights can be gained from analyzing students' pen-stroke data in homework to support formative assessment (n=37). The results showed that pen-stroke data revealed students' thought processes, including partial understanding and trial-and-error attempts, which were not visible in the final answers. Regarding this result, one mathematics teacher interviewed expressed an interest in using pen-stroke data in the classroom, particularly in specific units. This study concluded that pen-stroke data can enhance formative assessment by offering more profound insights into student learning. Satomi Hamada, Yuko Toyokawa, Taito Kano, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 5 |
| 2024 | Designing Recommendations for Productive Learning Habit-Building from Learning LogsabstractThis study looks at learning habits of temporal regularity in learning activities. Building such habits involves learners' regulation of their behaviors and requires learning strategies for time management, which is a cornerstone of self-regulated learning (SRL). Given the importance of habit-building in education, Learning Analytics (LA) techniques have been applied to various long-term supports by monitoring learners' habitual behaviors from the trace data. However, building a learning habit does not always mean the productive use of time. Scant supports attend to recommending learners by building which habit can improve their learning productivity. Hence, this study proposes recommendations for productive learning habit-building from learning logs. We focus on the context of English reading in a Japanese junior high school and design an algorithm to compute a recommended learning time slot. Furthermore, we collect learners' perceptions of their productivity and learning status at different times of the day. The comparison between self-report and log data presents that learners are not aware of their learning as the detection from their learning logs. This implies the potential of the proposed recommendations for facilitating learners to build productive learning habits. Specifically, our study can suggest an optimal time in learning plans and provide learners with a sustainable cue to automate learning behaviors from long-term perspectives. By building productive learning habits, learners can become more engaged in their studies as well as lead more balanced lives. Chia-Yu Hsu 0002, Izumi Horikoshi, Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 5 |
| 2024 | Exploring Reading Speed Profiles in EFL Extensive ReadingabstractExtensive Reading (ER) is recognized for enhancing English proficiency in EFL learners. Although understanding speed is essential for analyzing reading behavior, limited research has focused specifically on reading speed during ER sessions. This study addresses this issue by analyzing log data from junior high school students engaged in ER activities. Using agglomerative hierarchical clustering, we identified four distinct reading profiles based on Word Per Minute (WPM) changes. Future studies should further explore the impact of these profiles on the effectiveness of ER. Hatsune Ichidate, Yiling Dai, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2024 | Linking Real-World Experiences with Course Contents: A Text Mining Approach Toward Effective "There and Back Again"abstractIn higher education, teachers sometimes urge students to apply what they have learned during class to real-life situations. However, interweaving real-world events with class activities, or the There and Back Again process, entails difficulty in relating dynamic experiences to the course contents. This study attempted to link both sides using text mining techniques on course data from a Japanese university. We extracted key phrases from four weekly assignments featuring students' real-world explorations. Then we measured the semantic similarity between each key phrase and each course content and linked the pairs with high similarity. For the linked pairs, we conducted data analyses. We also held a semi-structured interview with a course teacher regarding the interpretability of visualized data and its practical use. Consequently, we confirmed: 1) the links between the course contents and students' key phrases appeared differently in the weekly assignments, 2) notable links between specific course contents and key phrases were identified, and 3) the visualized data contained valuable insights for the teacher, but more fine-grained linking and integrated presentations were required. Despite several limitations, the results support the potential utilization of this approach for effective data-enhanced experiential learning. Manabu Ishihara, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 3 |
| 2024 | Data-Driven Peer Recommendation and Its Applications in Extracurricular LearningabstractThis paper introduces a system designed to enhance extracurricular learning by recommending suitable peer helpers. The system integrates educational big data of knowledge and learner models to optimize peer learning opportunities with learning analytics. Utilizing a graph-based recommendation algorithm, it incorporates three distinct indicators to dynamically match learners with suitable peers based on specific learning contexts and needs. A significant feature of the system is its capability to visualize the knowledge and proficiency levels of potential helpers, thereby empowering learners to make well-informed decisions with less bias. The system's adaptability also permits educators to tailor it to meet diverse educational goals. We are conducting an experiment with this system during a university's paper reading course to test its usability. The system aims to reduce the burden on teachers and minimize the time students spend seeking help outside of class. Peixuan Jiang, Changhao Liang, Hiroaki Ogata |
ICCE | 3 |
| 2024 | Proficiency Modeling in Junior High Math: Adapted Cognitive Statistical Models to E-Book Learning ContextsabstractDigital learning platforms equipped with behavior sensors have provided abundant educational data. Utilizing this data, learner modeling can identify assorted learner characteristics from their behavior logs for learning analytics and dynamically update them in real time. There is a growing demand for knowledge-level modeling, moving beyond behavioral logs to assess knowledge proficiency. Based on item response theories and cognitive statistical models, existing studies estimate learning rates across various knowledge elements in each learning step in intelligent tutoring systems. However, these models, tailored to specific knowledge domains, offer limited flexibility across different knowledge units and scenarios. This paper introduces an adaptation of the basic additive factor model underpinned by logistic regression, focusing on behavior indicators. Drawing upon authentic learning data from an e-book learning infrastructure for junior high math, we examine the feasibility of our adapted models and demonstrate their potential for flexibility across knowledge units and learning phases. Changhao Liang, Kensuke Takii, Hiroaki Ogata |
ICCE | 3 |
| 2024 | Identifying Key Indicators of Proficiency in Junior High Math: Roles of Daily Handwriting Learning LogsabstractThis study proposes indicators from daily handwritten math learning logs of junior high school students to model knowledge proficiency, and analyzes the extent of their actual correlation with proficiency using the LEAF system. Our analysis reveals that specific pen stroke behaviors, such as writing speed and task engagement time, show significant, though weak, correlations with proficiency levels. These findings suggest that handwritten logs can serve as effective indicators of student proficiency, offering valuable insights for enhancing educational outcomes. Yudai Okayama, Changhao Liang, Kensuke Takii, Hiroaki Ogata |
ICCE | 4 |
| 2024 | Front Matter: The 32nd International Conference on Computers in EducationabstractThis PDF file contains the front matter associated with ICCE Proceedings including the Title Page, Copyright information, Table of Contents, Introduction, and Conference Committee listing. Ma. Mercedes T. Rodrigo, Akihiro Kashihara, Bo Jiang 0016, Jessica O. Sugay, Ju-Ling Shih, Hiroaki Ogata, Lung-Hsiang Wong |
ICCE | 6 |
| 2024 | OKLM: Open Knowledge and Learner Model Using Educational Big DataabstractThis study proposes the Open Knowledge and Learner Model (OKLM), a novel framework that integrates Learning Analytics (LA) with Digital Twin (DT) technology to model learners' knowledge, internal states, and environments. The OKLM DT framework addresses the limitations of traditional LA systems by enabling accurate estimation of knowledge states and personalized learning strategies. We developed a conceptual framework for the learner DT using LA, verified the accuracy of the OKLM-based DT model, and applied it to a learning support system. Initial experiments in an English literature recommendation system showed that, while the recommendations did not significantly enhance learners' motivation, they were well-received and positively correlated with increased engagement among highly motivated learners. A subsequent study involving Intensive Reading (IR) support for EFL learners further validated the model's effectiveness. Additionally, experiments targeting educators demonstrated that the OKLM's visualization tools were valuable for understanding learner characteristics and tailoring teaching materials. These findings suggest that OKLM can enhance the versatility and accuracy of learner models across various educational contexts, offering a significant advancement in the field of LA. Kensuke Takii, Changhao Liang, Hiroaki Ogata |
ICCE | 3 |
| 2024 | Toward Contextualized Handwriting Process Analysis: Comparison Between Problem Types in MathabstractHandwriting logs in the math answering process have recently been collected, and features related to the answering performance and the process, such as the stroke duration, have been investigated. However, the results reported in previous studies showed inconsistencies, and sufficient consideration had not been given to the differences in the problem types. In this study, we classified some problems into two types and verified whether there is a difference in the effect of the handwriting process on performance in each feature. The result of the analysis showed a significant difference in the effects of problems on the features used in this study, such as answering time and number of strokes. This study contributes to the need to take into consideration the problem type in learning support with handwriting process logs. Shunsuke Tonosaki, Taito Kano, Satomi Hamada, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 5 |
| 2024 | Classifying Self-Reflection Notes: Automation Approaches for GOAL SystemabstractSelf-directed learning (SDL) is considered a crucial skill for 21st-century learners, promoting personalized and responsive educational experiences. This study explores the untapped potential of self-reflection, particularly in e-learning environments. The research focuses on self-reflection notes, which contain strategies past students adopted when facing different situations or challenges. These notes can help current or future students facing similar situations. In this study, students take tests weekly and leave their self-reflection notes after tests. In these notes students recorded their feelings and issues, offering perspectives and insights that experts might overlook or misunderstand in some details, thus failing to provide appropriate assistance. Extracting and categorizing information from self-reflection notes is crucial to further utilize this data. Our research introduces a machine learning-based approach that effectively classifies these self-reflection notes such as cognitive, metacognitive, experiential, and irrelevant text. We compare the performance of BERT, based on the transformer architecture, with traditional machine learning classifiers such as Support Vector Machines (SVM) and Random Forests (RF). Additionally, we enhanced the BERT model by training it on synthetic data generated through GPT-4 and employing a hybrid loss combining Supervised Contrastive Learning (SCL) and Cross-Entropy (CE) to improve classification capabilities. Our results indicate that the BERT model, enhanced with advanced training techniques, outperforms traditional models in classifying learning strategies from self-reflection notes. This study not only advances the understanding of SDL in online learning environments but also demonstrates the potential of tailored machine-learning solutions to foster more effective and adaptive learning strategies. Chia-Yu Hsu 0002, Izumi Hirokoshi, Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 6 |
| 2024 | Empowering Educational Researchers with a Privacy-Centric Data Platform: Design, Implementation, and ImplicationsabstractThe Educational Research Data Platform (EREDA) developed at Kyoto University addresses the challenges of managing and analyzing educational data while prioritizing privacy and security. EREDA seamlessly integrates with the existing Learning and Evidence Analytics Framework (LEAF) and offers advanced data management and analysis capabilities, including a robust Data Integrity Checker (DIC) tool and backfilling. By employing real-time data streaming, robust anonymization techniques, and a multi-tenancy design, EREDA empowers researchers to conduct secure and efficient educational research. The platform also features collaborative tools that enhance knowledge sharing and accelerate insight generation. As EREDA continues to evolve, its potential to drive data-driven decision-making in educational institutions and influence educational policies is significant. Future developments will focus on scaling the platform to reach a broader user base and enhancing its functionality to better support researchers. Isanka Wijerathne, Brendan Flanagan, Hiroaki Ogata |
ICCE | 3 |
| 2024 | AVERY: A GenAI-Based Approach to Enhancing Learner Engagement in English WritingabstractThe rapid development of Generative AI (GenAl) provides more opportunities and methods to deliver meaningful, engaging and gamified learning experiences to language learners. While there are various language learning applications, current methods often suffer from low completion rates and a painful learning process. In this paper, we propose a new gamified learning experience for English Language learners based on an image-text-image GenAl game: AVERY (Augmenting Vision to Enhance YouR English writing skills). The game is designed to enhance learner engagement by adopting image generation in English writing. A learner begins by providing the system with an image. The learner can ask the AI for hints to describe the image and pass a well-curated sentence to the system. The system generates an image based on the learner's answer. In the final round, the system provides feedback on how well the learner provided useful and correct clues and areas for further improvement. 12 respondents were asked to play the game and fill a questionnaire. The results showed a positive affect towards the AVERY system and its use in enhancing learner engagement. Ka Lai Wong, Patrick Ocheja, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2024 | TAMMY: Supporting EFL Translation Practice with an LLM-Powered ChatbotabstractLearning EFL through translation tasks is an effective language learning technique, but requires consistent practice and scaffolding. This study evaluates TAMMY, a prototype EFL chatbot designed for Japanese learners to practise English translation tasks. Using the extended Technology Acceptance Model, the study examines Tammy's usability, usefulness, and enjoyment. Response appropriateness and task success are also explored. Findings from a pilot study with Japanese university students indicate high usability and positive attitudes towards the chatbot. Tammy effectively provided accurate feedback in most tasks successfully guiding learners to an accurate translation, though improvements are needed in feedback clarity and conversational adaptability. Despite limitations, Tammy shows promise as a support tool for language learning, offering an engaging and non-judgmental platform for practising translation and enhancing English proficiency. Steve Woollaston, Brendan Flanagan, Patrick Ocheja, Yiling Dai, Hiroaki Ogata |
ICCE | 5 |
| 2024 | Representing Learning Progression of Unguided Exercise Solving: A Generalization of Wheel-Spinning DetectionabstractThis study aims at modeling and visualizing students' behavior in a self- regulated and unguided learning environment with a focus on learning progression. Since the modeling approach is process-oriented and does not depend on specific mastery learning criteria, this paper provides a novel way to identify wheel-spinning in self-regulated learning solely based on activity monitoring. The study investigates the free and unsupervised engagement of junior high school students in solving mathematics exercises during summer vacation. During this period, a pool of exercises was provided on the LEAF online learning platform. Additionally, the students receive adaptive exercise recommendations as an add-on. Guided by the basic idea of wheel- spinning as persistent engagement without learning progression, we have designed a mathematical model and a graphical representation to capture and gauge the individual learning progression. Based on an expert questionnaire survey, we considered how this novel representation can serve as a basis to analytically characterize learning progression and specifically to identify wheel-spinning. Taisei Yamauchi, H. Ulrich Hoppe, Yiling Dai, Brendan Flanagan, Hiroaki Ogata |
ICCE | 5 |
| 2024 | 'Global Harwell' in an Examination-Driven Education System and an Excellence-Pursuing Society: Possible? How? Better with Digital Technologies?abstractUnder the societal and cultural structure where education systems are heavily driven by examinations (especially in Asia) and the pursuit of excellence reigns supreme, competing for limited educational, environmental/natural, and capital resources is prevalent and appears unavoidable. Although great socioeconomic development and scientific advances have been achieved, it inevitably comes with adverse consequences (e.g., alarmingly increasing rates of anxiety and depression, diminishing learning interest and confidence, social inequity, conflicts, divisiveness, and lack of inclusiveness). The focus of this panel is if and how 'Global Harwell' (a term combining 'harmony' and 'wellbeing') can direct all stakeholders involved in education to a universally shared educational goal. This panel invites a group of international scholars to share their practices and research findings on how the values, principles, concepts, and elements of 'Global Harwell' (e.g., positive emotions, engagement, positive relationships, meaning, accomplishment, compassion, gratitude, empathy) can be or are being actualized in educational systems, with technologies playing a supporting or an essential role at the global, societal, family, and/or individual levels, for ultimate student wellbeing and a harmonious world. Fu-Yun Yu 0001, Tak-Wai Chan, Sahana Murthy, Su Luan Wong, Wenli Chen 0004, Hyo-Jeong So, Hiroaki Ogata |
ICCE | 7 |
| 2023 | Co-Designing Nudges for Self Directed Learning within GOAL SystemabstractThe paper focuses on the optimized use of “nudges” in an online learning platform by undergraduate students during a semester-long elective course. The study involved in a compelling exercise in which students from different academic years participated in co-designing nudges for an online learning platform to prompt behavior changes. After analyzing the student responses on designed nudges on when these nudges should be used in varying reading rates, they were categorized as confront, social, and deceive. In self-directed learning, the data analysis trends confront and social category nudges were the most preferred, while deceive category nudges were the least popular i.e. The confront category and social category nudges were found more effective than deceive category nudges for behavior change. Kinnari Gatare, Rwitajit Majumdar, Hiroaki Ogata |
ICALT | 4 |
| 2023 | Learning with Explainable AI-Recommendations at School: Extracting Patterns of Self-Directed Learning from Learning LogsabstractEducational explainable AI (XAI) applications are gaining research focus and have distinct needs in the domain of Education. This research presents Educational eXplainable AI Tool (EXAIT), a system for math quiz recommendations, along with an explanation. EXAIT was implemented in a Japanese public high school where students received the top 5 math problems based on Bayesian Knowledge Tracing (BKT) algorithm in a learning analytics dashboard. It aimed to help them complete their summer vacation assignments having 240 questions. On click, the students were redirected to an eBook platform to submit their accuracy and confidence level in each problem. We conducted a study with a quasi-experimental design and divided into 3 groups based on compliance of use. RecoExp group received and used explanations regarding why an item was recommended and how it aims to maximize learners' knowledge-gaining path. RecoCon was the control group that received just the recommendations and used it and RecoNone group did not use the system at all during the time period. We provide a framework to analyze learning logs from EXAIT and extract emerging self-directed learning patterns. Analyzing 222 students' EXAIT logs, we found learners who had checked explanations while selecting recommendations had significantly higher performance. Further differential process mining highlighted significant active daily engagement transitions of the RecoExp group in the self-directed activity. Rwitajit Majumdar, Kyosuke Takami, Hiroaki Ogata |
ICALT | 3 |
| 2023 | Extraction of Characteristic Answering Behavior Using Handwritten Log DataabstractWe extracted learners' characteristic answering behaviors from handwritten process log data and investigated whether learners' situations could be inferred based on these characteristics. The result showed we were able to extract several characteristic answering behaviors, such as stopped pen stroke and late start. Furthermore, we examined the learners' situation for each feature in the actual answering process. The results revealed that several characteristic answering behaviors indicated situations such as learners' stumbling or giving up. These results imply that handwritten process log data can allow teachers to capture learners' situations and support teachers' interventions. Junya Atake, Taito Kano, Kohei Nakamura, Chia-Yu Hsu 0002, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 6 |
| 2023 | Can We Ensure Accuracy and Explainability for a Math Recommender System?abstractProviding explanations in educational recommender systems are supposed to increase students’ awareness of the recommendations, trust toward the system, motivation to adopt the recommendations. With the expectation to have a higher prediction accuracy, more and more complex recommendation models are developed, which are difficult to explain. It remains debatable that whether there exists a trade-off between the accuracy and explainability of recommender systems. In this study, we focus on the explainable math quiz recommender system--- Naïve Concept Explicit (Naïve CE) proposed in our previous work. We are interested in knowing whether the explainable Naïve CE has a good prediction accuracy compared with a powerful but less explainable model--- Matrix Factorization (MF). We also proposed a combined model CE+MF to preserve the explainability of Naïve CE and predicting power of MF. We then used a long-term quiz answering dataset to evaluate the models’ accuracy as to predicting students’ correctness rate of the quizzes. The results revealed that 1) The explainable model Naïve CE had a lower accuracy than the less model MF given the sparse dataset; 2) Combining two models achieved a moderate accuracy in predicting students’ answers while preserving the explainability of Naïve CE. Our study served as an example of how to develop an inherently explainable educational recommender system and how to improve the accuracy by integrating more complex models. Yiling Dai, Brendan Flanagan, Hiroaki Ogata |
ICCE | 3 |
| 2023 | Teaching Analytics with xAPI: Learning Activity Visualization with Cross-platform Data
Izumi Horikoshi, Yuko Toyokawa, Kohei Nakmura, Changhao Liang, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 6 |
| 2023 | Learning Habits Mining and Data-driven Support of Building Habits in EducationabstractIn terms of the learning logs accumulating from real-world educational activities, techniques of learning analytics help understand the characteristics of learners' behaviors. However, extracting learning habits from log data and data-driven support for building learning habits have not yet attracted much attention. Therefore, this research proposes the approach of “Learning Habits Mining,” which aims to extract the types and stages of learning habits from learners' daily learning logs and support learners to build learning habits with data-driven methods. We identify two contributions of this research. First, this research reveals the learning habits of K12 learners and provides an approach to trace the process of building learning habits automatically. Second, this research proposes interventions to the data-driven support for building learning habits so that learners can build learning habits based on evidence derived from learning logs. Chia-Yu Hsu 0002, Izumi Horikoshi, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Chronotypes of Learning Habits in Weekly Math Learning of Junior High School
Chia-Yu Hsu 0002, Mandukhai Otgonbaatar, Izumi Horikoshi, Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 6 |
| 2023 | Supporting Peer Help Recommendation Based on Learner-Knowledge Model
Peixuan Jiang, Kensuke Takii, Changhao Liang, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 5 |
| 2023 | Data-Driven Competency Assessment Supporting System for TeachersabstractAs many countries seek to promote competency-based education, formative assessments are important to capture the learning processes of learners. However, as yet there are no assessments that can fully capture the learning process. Recently, the use of ICT tools for learning has become more general, and learning log data has been accumulated. Using these data, it has become possible to capture learning processes in detail; therefore, data-driven assessment has attracted increasing attention. However, as conventional data-driven competency assessments require experts to map data to competencies, they can only be applied in a defined context. In this study, we proposed an assessment framework that allows teachers to assess their students’ competency by freely combining data collected as students used the Learning & Evidence Analytics Framework (LEAF) platform. We created an assessment in a scenario in an assumed educational setting using the proposed framework and examined what kind of assessment would be possible. Then, we created a system for the framework. Finally, interviews were conducted with three teachers regarding the system. The results suggest that the system can achieve context-independent and flexible data-driven assessment, contributing to the continuous improvement of learning and teaching from multiple perspectives in activities that use the system. Taito Kano, Izumi Horikoshi, Kento Koike, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Conceptual Design of WHALE: A Wise Helper Agent for the LEAF Environment
Kento Koike, Rwitajit Majumdar, H. Ulrich Hoppe, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Tackling Unserious Raters in Peer Evaluation: Behavior Analysis and Early Detection with Learner ModelabstractPeer evaluation of individual or group work is often adopted in team-based learning design. However, some raters may not take the evaluation process seriously and exhibit behaviors such as using the same score, rushing through evaluations, or not evaluating during the presentation. This study investigates the issue of unserious peer evaluation in group presentations, focusing on their behavior patterns. Using evaluation behavior analysis indicators, we identified unserious raters who exhibited low reliability in the peer evaluation process. Further, we conducted a preliminary analysis to detect unserious raters based on learner model data available before the peer evaluation process. This information can assist teachers in providing personalized prompts and interventions prior to the peer evaluation process, thus enhancing the evaluation quality of these students with timely prompts to them. Changhao Liang, Izumi Horikoshi, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Towards a Collaborative Vision for Redesigning Education for Harmonious and Thriving Educational Futures in Asia and Beyond: Will Seamless IDC Theory lead us there?
Chee-Kit Looi, Siu Cheung Kong, Ronghuai Huang, Jon Mason, Hiroaki Ogata, Hyo-Jeong So, Lung-Hsiang Wong |
ICCE | 5 |
| 2023 | Visualization of Instructional Patterns from Daily Teaching Log Data
Kohei Nakamura, Izumi Horikoshi, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Sharing Learning Log while maintaining privacy over blockchain: Heuristic Evaluation of BOLL
Patrick Ocheja, Rwitajit Majumdar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Towards Automated Evidence Extraction: A Case Study of Adapting SAM to Real-World Educational Data
Kouki Okumura, Izumi Horikoshi, Kento Koike, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Construction of an English Grammar Quiz Recommendation System Using Explanation by a Knowledge MapabstractMany systems to assist in learning English grammar have been developed in the field of learning material recommendation systems (LMRSs). Compared with those based on knowledge models, recommendations based on data tend to cause the cold-start problem, and it is said that explainable LMRSs may be able to enhance learners’ motivation. In our research, we propose an explainable English grammar quiz recommendation system using a knowledge map to support students’ learning of English grammar with trust in the system and motivation. The learning effect of the explanation of the system was evaluated in an experiment, in which 349 high school students in Japan participated. This experiment showed that there was little learning effect of the explanation, but the system reliability and motivation improved by the explanation. The limitation and our future work regarding the validity and learning effects of the system are also indicated. Kensuke Takii, Naomichi Tanimura, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Impact of Self-analysis Behaviors in GOAL for Japanese High School EFL Learners
Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 3 |
| 2023 | ECLAIR: A Centralized AI-Powered Recommendations System in a Multi-Node EXAIT System
Isanka Wijerathne, Brendan Flanagan, Yiling Dai, Hiroaki Ogata |
ICCE | 4 |
| 2023 | Mobile Learning: Reflections on the Past and Visions for the Future
Lung-Hsiang Wong, Daner Sun, Hiroaki Ogata, Hyo-Jeong So, Xiaoqing Gu, Ching-Kun Hsu |
ICCE | 3 |
| 2023 | Improved Automated Labeling of Mathematical Exercises in Japanese
Taisei Yamauchi, Ryosuke Nakamoto, Yiling Dai, Kyosuke Takami, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2023 | Matching Intervention Messages Considering Complex Personality Types of High School Students
Taisei Yamauchi, Yuta Nakamizo, Kyosuke Takami, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 5 |
| 2022 | Extensive Reading at Home: Extracting Self-directed Reading Habits from Learning Logs
Chia-Yu Hsu 0002, Rwitajit Majumdar, Huiyong Li 0002, Hiroaki Ogata |
AIED (1) | 5 |
| 2022 | Learning at a Cafe and Learning at a Lab: Integrating Learning Logs with Smart Eyewear and Environmental Sensor DataabstractThis paper reports an innovative data capturing pipeline for learner modeling by integrating learning logs with physiological and environmental sensor data. The learning logs are collected from BookRoll, an ebook reader. Wearable device signals consist of the user’s affective state from a new version of the eye movement tracking device JINS Meme. An Omron sensor was used to collect environmental data like temperature, noise level, humidity, and luminescence. The architecture of the data collection and its potential are presented in this paper: As a pilot study participants did calculation and comprehension tasks in the ebook reader in two environmental conditions: one within a research lab and one at a cafe to simulate self-study environments. The data from the sensors were collected and synchronized to provide descriptive statistics. Rwitajit Majumdar, Naomichi Tanimura, Yukihiro Arakawa, Yuta Nakamizo, Huiyong Li 0002, Brendan Flanagan, Hiroaki Ogata |
ICALT | 8 |
| 2022 | Learning Analytics Enhanced E-book Reader in a Japanese Special Needs ClassabstractUtilization of Information and Communication Technology (ICT) has been penetrated not only in regular classes, but also in resource rooms, or we call Special Needs Class (SNC), in Japan. Its study has been a popular research target among stakeholders for special needs education, however, there is little reported on discussing how log data can be used to support teaching and learning for children who need special support. In this paper, we propose implementation of using BookRoll (BR), a learning analytic enhanced e-book in SNC. For a pilot study, three participants who attend SNC were selected from an elementary school. Their handwritings with a touch-pen left in a memo function in BR were visible as logs in an analysis tool to illustrate the outcomes of their performance which enabled to trace their learning difficulties. Parents’ intervention as limitation and introducing Learning Evidence Analysis Framework (LEAF) system and learning support for children with special needs from the field of educational learning analytics are suggested. Yuko Toyokawa, Rwitajit Majumdar, Hiroaki Ogata |
ICALT | 3 |
| 2022 | Investigation on Practical Effects of the Explanation in a K-12 Math Recommender System
Yiling Dai, Kyosuke Takami, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Applicability and Reproducibility of Peer Evaluation Behavior Analysis Across Systems and Activity Contexts
Izumi Horikoshi, Changhao Liang, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Extracting Students' Self-Regulation Strategies in an Online Extensive Reading Environment using the Experience API (xAPI)
Chia-Yu Hsu 0002, Izumi Horikoshi, Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 5 |
| 2022 | Classification and Analysis of Learners' Proficiency Level in Marker Use Based on Learning Logs
Taito Kano, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 3 |
| 2022 | Exploring Predictive Indicators of Reading-Based Online Group Work for Group Formation Teaching Assistance
Changhao Liang, Izumi Horikoshi, Rwitajit Majumdar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 5 |
| 2022 | Learning Log-Based Group Work Support: GLOBE Framework and System Implementations
Changhao Liang, Izumi Horihoshi, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2022 | A Quality Data Set for Data Challenge: Featuring 160 Students' Learning Behaviors and Learning Strategies in a Programming Course
Owen H. T. Lu, Anna Y. Q. Huang, Brendan Flanagan, Hiroaki Ogata, Stephen J. H. Yang |
ICCE | 4 |
| 2022 | LA-ReflecT: A Platform for Data-informed Reflections in Micro-learning Tasks
Rwitajit Majumdar, Hiroaki Ogata, Prajish Prasad, Jayakrishnan Madathil Warriem |
ICCE | 2 |
| 2022 | GWpulse: Supporting Learner Modelling and Group Awareness in Online Forum with Sentiment Analysis
Yuta Nakamizo, Changhao Liang, Izumi Horikoshi, Rwitajit Majumdar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2022 | Teaching Analytics Across Multiple Systems: A Case Study at a Junior High School in Japan
Kohei Nakamura, Izumi Horikoshi, Hiroaki Ogata |
ICCE | 3 |
| 2022 | Automated Test Set Quiz Maker Optimizing Solving Time and Parameters of Bayesian Knowledge Tracing Model Extracted from Learning Log
Kyosuke Takami, Gou Miyabe, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Explainable English Material Recommendation Using an Information Retrieval Technique for EFL Learning
Kensuke Takii, Brendan Flanagan, Huiyong Li 0002, Hiroaki Ogata |
ICCE | 5 |
| 2022 | A Learning Path Recommendation System for English Grammar Quiz Using Knowledge Map
Naomichi Tanimura, Kensuke Takii, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Automated Matching of Exercises with Knowledge components
Zejie Tian, Brendan Flanagan, Yiling Dai, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Digitally Enhanced Active Reading in a Learning Analytics Enhanced Environment
Yuko Toyokawa, Izumi Horikoshi, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Nudge Messages for E-Learning Engagement and Student's Personality Traits: Effects and Implication for Personalization
Taisei Yamauchi, Kyosuke Takami, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2022 | Self-directed Extensive Reading Supported with GOAL System: Mining Sequential Patterns of Learning Behavior and Predicting Academic PerformanceabstractSelf-directed learning (SDL) is an important skill in the 21st century, while the understanding of its process in behavior has not been well explored. Analysis of the sequential behavior patterns in SDL and the relations with students’ academic performance could help to advance our understanding of SDL in theory and practice. In this study, we mined the behavioral sequences of self-directed extensive reading from students’ learning and self-directed behavioral logs using differential pattern mining technique. Furthermore, we built models to predict students’ academic performance using the conventional behavior frequency features and the behavior sequence features. Experimental results identified 14 sequential patterns of SDL behaviors in the high-performance student group. The prediction model revealed the importance of sequential patterns in SDL behavior, which was built with an acceptable AUC. These findings suggested that several SDL strategies in behavior contribute to students’ academic performance, such as analysis learning status before planning, planning before learning, monitoring after learning. Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
LAK | 5 |
| 2022 | Educational Explainable Recommender Usage and its Effectiveness in High School Summer Vacation AssignmentabstractExplainable recommendations, which provide explanations about why an item is recommended, help to improve the transparency, persuasiveness, and trustworthiness. However, few research in educational technology utilize explainable recommendations. We developed an explanation generator using the parameters from Bayesian knowledge tracing models. We used this educational explainable recommendation system to investigate the effects of explanation on the summer vacation assignment for high school students. Comparing the click counts of recommended quizzes with and without explanations, we found that the number of clicks was significantly higher for quizzes with explanations. Furthermore, system usage pattern mining revealed that students can be divided to three clusters— none, steady and late users. In the cluster of steady users, recommended quizzes with explanations were continuously used. These results suggest the effectiveness of an explainable recommendation system in the field of education. Kyosuke Takami, Yiling Dai, Brendan Flanagan, Hiroaki Ogata |
LAK | 4 |
| 2021 | Personal Vocabulary Recommendation to Support Real Life Needs
Victoria Abou Khalil, Brendan Flanagan, Hiroaki Ogata |
AIED (2) | 3 |
| 2021 | Towards Explainable Group Formation by Knowledge Map based Genetic AlgorithmabstractIn recent years, machine learning of increasing complexity is being applied to problems in education. However, there is an increasing call for transparency and understanding into how the results of complex models are derived, leading to explainable AI gaining attention. The application of machine learning to automated group formation for collaborative work from learning system logs and other data has been progressing. Building on previous research in this field, we propose a group formation method that is based on a combination of course knowledge structures, reading behavior, and assessment analysis to create optimal heterogenous and homogeneous working groups using a genetic algorithm. The characteristics of each group are presented for explanation as a visualized knowledge map showing the strengths and weaknesses of each group, and are in the structure form of curriculum. We also present a case study of applying the method to junior high school mathematics log data, and provide explanation in a visualized form of standardized curriculum of group characteristics that are often referenced for learning design by teachers. Brendan Flanagan, Changhao Liang, Rwitajit Majumdar, Hiroaki Ogata |
ICALT | 4 |
| 2021 | Mining Mathematics Learning Strategies of High and Low Performing Students using Log DataabstractSelf-regulation in learning involves planning and utilizing different shared resources. This study investigates learning strategies of different student groups when they are accessing course materials in digital medium - one group is the students with high academic performance, the other is the students with low academic performance. We analyze data of 116 students from a mathematics course in a junior high school. Using the differential pattern mining technique, we highlight underlying course content accessing patterns from the learning log collected by an e-book system, BookRoll. Rwitajit Majumdar, Hiroaki Ogata |
ICALT | 3 |
| 2021 | Design of a Critical Thinking Task Environment based on ENaCT frameworkabstractENaCT is a framework for the design and analysis of critical thinking environments based on 4E cognition perspectives. In this paper, we describe a web-based critical thinking environment designed to implementœ the ENaCT framework. When users perform a critical thinking task in the environment their interaction logs are captured. We report on a pilot study with undergraduate participants and analyse how participants used the affordances in the environment as they performed the critical thinking task. One case of task-related behaviours (high activity) is elaborated to highlight the current possibilities of the system and discuss implications for redesign. Rwitajit Majumdar, Aditi Kothiyal, Shitanshu Mishra, Prajakt Pande, Huiyong Li 0002, Hiroaki Ogata, Jayakrishnan Madathil Warriem |
ICALT | 7 |
| 2021 | ReDrEw: A Drawing based Knowledge Organization Task in LA-enhanced PlatformabstractIn this paper, we propose an interactive drawing based activity in BookRoll, an e-book-based teaching-learning platform. Participants who were researchers drew an overview of their research as a handwritten memo. We demonstrate the affordances of the learning analytics (LA) enhanced platform to facilitate practice and research of such a drawing activity focused on a higher-order thinking task to organize knowledge (research overview in this case). We share the multi-modal data of 4 participants to illustrate the outcomes of the activity and their perception of the activity. An initial analysis of the handwritten memo is visualised. Further reflections show how the use of learning analytics-based platforms can enrich the learning design of a knowledge organisation task. Rwitajit Majumdar, Daichi Yoshitake, Brendan Flanagan, Hiroaki Ogata |
ICALT | 4 |
| 2021 | EFL Vocabulary Learning Using a Learning Analytics-based E-book and Recommender PlatformabstractLearning vocabulary is a crucial but challenging activity for English as a foreign language learners, and computer-assisted language learning can facilitate this process. Moreover, e-learning is attracting a great deal of attention as a new technology to bring educational support which traditional learning systems cannot provide. Recommender systems as its implementation have been subject to discussion. In this study, we propose a comprehensive learning analytics-based platform for efficient vocabulary learning, including an e-book reader and a book/quiz recommender. The system on this platform estimates learners' knowledge based on their activities and brings personalized recommendation and its bases to the learners. Also, this platform provides teachers with visualized feedback regarding the recommendation and students' engagement in learning. Kensuke Takii, Brendan Flanagan, Hiroaki Ogata |
ICALT | 3 |
| 2021 | Technology Enhanced Jigsaw Activity Design for Active Reading in EnglishabstractJigsaw learning is one of the popular cooperative learning methods which has been utilized in many English as Foreign Language (EFL) classrooms. In recent years, utilization of technology in education has accelerated. In this study, Jigsaw+, a new jigsaw learning approach with an e-book reader, was proposed to explore how the learning design can be applied for English vocabulary acquisition, reading comprehension, and students' engagement in group activities. A quasi-experimental study was conducted at a high school in Japan for advanced and standard class students. Participants read and comprehend a story in English through BookRoll, an e-book platform with an analysis tool embedded. Two research questions were investigated; 1) to what extent did Jigsaw+ affect students' English vocabulary knowledge and reading comprehension? and 2) to what extent did Jigsaw+ promote students' reading engagement in the jigsaw group activities? The results revealed that Jigsaw+ learning tasks assisted to improve students' vocabulary and reading comprehension for both the advanced and standard groups. Moreover, it facilitated students' engagements in activities. Some limitations of the study are also discussed. Yuko Toyokawa, Rwitajit Majumdar, Louis Lecailliez, Changhao Liang, Hiroaki Ogata |
ICALT | 5 |
| 2021 | The Role of Artificial Intelligence in STEM Education
Siu Cheung Kong, Hiroaki Ogata, Ju-Ling Shih |
ICCE | 2 |
| 2021 | Mining Students' Engagement Pattern in Summer Vacation Assignment
Hiroyuki Kuromiya, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 3 |
| 2021 | Data-informed Teaching Reflection: A Pilot of a Learning Analytics Workflow in Japanese High School
Taro Nakanishi, Hiroyuki Kuromiya, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2021 | Investigating Relevance of Prior Learning Data Connected through the Blockchain
Patrick Ocheja, Brendan Flanagan, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2021 | Effects of Virtual Reality on Students' Creative Thinking during a Brainstorming Session
Mondheera Pituxcoosuvarn, Victoria Abou Khalil, Hiroaki Ogata, Yohei Murakami |
ICCE | 3 |
| 2021 | A Flipped Model of Active Reading Using Learning Analytics-enhanced E-book Platform
Yuko Toyokawa, Rwitajit Majumdar, Louis Lecailliez, Hiroaki Ogata |
ICCE | 4 |
| 2021 | Leveraging Student-Generated Ideas (SGI) to Facilitate Socio-constructivist Learning and Conceptual Change: The Roles of Technology in SGI Learning Trajectories
Lung-Hsiang Wong, Chew Lee Teo, Hiroaki Ogata |
ICCE | 3 |
| 2021 | An Intelligent Evaluation Framework for Personalized Learning
Albert C. M. Yang, Hiroaki Ogata |
ICCE | 2 |
| 2021 | An Evaluation of a Meaningful Discovery Learning Support System for Supporting E-book User in Pair Learning
Jingyun Wang 0003, Hiroaki Ogata |
ITS | 2 |
| 2021 | Developing Policies for the Use of Education and Learning Data in JapanabstractWe developed a three-level template for education and learning data usage policy in Japan and published it on the Academic eXchange for Information Environment and Strategy website. We found that clarifying the purpose of use and obtaining subjects’ consent are central to education and learning data usage, including personal information, and there is a responsibility to manage the data appropriately. The template allows for using education and learning data for research in compliance with the Act on the Protection of Personal Information. It can also be used to create anonymously processed information from such data for sharing among universities. Hiroaki Ogata, Tsuneo Yamada |
KES | 2 |
| 2020 | Do different instructional styles affect students' learning on summer assignments?abstractSummer vacation is considered a cause of loss in students' learning performance. In this study, we investigated the differences in learning behaviors in reading learning materials and time-related behavior patterns regarding summer assignments among three classes under different instructional styles. The results showed that students' learning behaviors in summer were correlated with instructional styles in school. Li Chen 0032, Xuewang Geng, Hiroaki Ogata, Atsushi Shimada 0001, Masanori Yamada |
ICALT | 4 |
| 2020 | The Relationship Between Student Performance and Reading Behavior in Open eBook AssessmentabstractDigitized learning materials are a core part of modern education and also can offer insight into the learning behavior of high and low performing students. The topic of predicting student characteristics has gained a lot of attention in recent years, with applications ranging from affect to performance and at-risk student prediction. In this paper, we examine students reading behavior using a digital textbook system while taking an open ebook test from the perspective of performance and identifying strategies that are used by both high and low performing learners. We create models to predict the performance of learners before the start of the assessment and extract reading behavior characteristics employed before and after the start of the assessment in a higher education setting. It was found that 1) strategies, such as: revising and previewing are indicators of how a learner will perform in an open ebook assessment; and 2) low performing students take advantage of the open ebook policy of the assessment and employ a strategy of searching for information during the assessment. Brendan Flanagan, Rwitajit Majumdar, Gökhan Akçapinar, Hiroaki Ogata |
ICALT | 4 |
| 2020 | Learning Analytics of the Relationships among Learning Behaviors, Learning Performance, and MotivationabstractPrevious research has established that motivation has a positive impact on the learning processes and behaviors [1] [2]. Learning analytics (LA) can play an important role in addressing the issue of collecting learning behaviors. In this study, we observed the teaching activities of three classes and examined the relationships among learning motivation, learning performance, and learning behaviors of students in digital learning material readers. Xuewang Geng, Li Chen 0032, Hiroaki Ogata, Atsushi Shimada 0001, Masanori Yamada |
ICALT | 4 |
| 2020 | Oh! Another Deadline: Cohort Analysis of Learner's Behaviors in Self-Directed TasksabstractSelf-direction skills in the context of learning can be supported with data in this digital era. This study analyzes the behaviors of learners during a self-directed reading and summarization task. Our work investigates an undergraduate course (n=72) where students worked on a reading and summarizing assignment while planning and monitoring the task in GOAL, a platform synthesizing learner's activity data from learning and physical activity contexts. This study focuses on the initial cohort analysis of the students' behavior based on the fine grain interaction data collected in the different systems using visual analytics techniques. Such a data-rich narrative of self-directed in-semester activities is not discussed yet in the literature to our knowledge. We discuss the implications of the trends that is found in our collected dataset for designing AI-support for self-direction skills with the GOAL platform and the scope of deeper analysis to further understand the process. Rwitajit Majumdar, Huiyong Li 0002, Brendan Flanagan, Gökhan Akçapinar, Hiroaki Ogata |
ICALT | 6 |
| 2020 | Examining primary students' after-class vocabulary behavioural learning patterns in usergenerated learning context: a case study
Yanjie Song 0002, Hiroaki Ogata, Kousuke Mouri |
ICCE | 2 |
| 2020 | Exploring Temporal Study Patterns in eBook-based Learning
Gökhan Akçapinar, Mohammad Nehal Hasnine, Rwitajit Majumdar, Mei-Rong Alice Chen, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2020 | Improving EFL Students' Learning Achievements and Behaviors using a Learning Analytics-based e-book System
Mei-Rong Alice Chen, Rwitajit Majumdar, Gwo-Jen Hwang, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 7 |
| 2020 | Identifying Student Engagement and Performance from Reading Behaviors in Open eBook Assessment
Brendan Flanagan, Rwitajit Majumdar, Kensuke Takii, Patrick Ocheja, Mei-Rong Alice Chen, Hiroaki Ogata |
ICCE | 6 |
| 2020 | Professional Learning Community's Views on Accessibility during Emergency Remote Teaching
Thomas Gorham, Hiroaki Ogata |
ICCE | 2 |
| 2020 | Improving Skills for Peer Feedback on Spoken Content Using an Asynchronous Learning Analytics App
Thomas Gorham, Hiroaki Ogata |
ICCE | 2 |
| 2020 | Learning Dialogues orchestrated with BookRoll: A Case Study of Undergraduate Physics Class During COVID-19 Lockdown
Vijayanandhini Kannan, Jayakrishnan Madathil Warriem, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2020 | Emergency remote teaching in low-resource contexts: How did teachers adapt?
Victoria Abou Khalil, Samar El Helou, Eliane Khalifé, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 5 |
| 2020 | Design Explorations to Support Learner's Mental Health using Wearable Device and GOAL application
Taisho Kondo, Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 5 |
| 2020 | Impact of School Closure during COVID19 Emergency: A Time Series Analysis of Learning Logs
Hiroyuki Kuromiya, Rwitajit Majumdar, Taisyo Kondo, Taro Nakanishi, Kensuke Takii, Hiroaki Ogata |
ICCE | 6 |
| 2020 | Design of a Self-Reflection Model in GOAL to Support Students' Reflection
Huiyong Li 0002, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2020 | Learning Analytics of Critical Reading Activity: Reading Hayavadana during Lockdown
Rwitajit Majumdar, Geetha Bakilapadavu, Reek Majumder, Mei-Rong Alice Chen, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2020 | Learning Analytics for Humanities and Design Education
Rwitajit Majumdar, Geetha Bakilapadavu, Ramkumar Rajendran, Sameer Sahasrabudhe, Brendan Flanagan, Mei-Rong Alice Chen, Hiroaki Ogata |
ICCE | 7 |
| 2020 | E-book based Learning in times of Pandemic
Rwitajit Majumdar, Mei-Rong Alice Chen, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2020 | A Prototype Framework for a Distributed Lifelong Learner Model
Patrick Ocheja, Brendan Flanagan, Solomon Sunday Oyelere, Louis Lecailliez, Hiroaki Ogata |
ICCE | 5 |
| 2020 | Efficiency or Engagement: Comparison of Book Recommendation Approaches in English Extensive Reading
Kensuke Takii, Brendan Flanagan, Hiroaki Ogata |
ICCE | 3 |
| 2020 | Trends of E-Book-Based English Language Learning: A Review of Journal Publications from 2010 to 2019
Yuko Toyokawa, Mei-Rong Alice Chen, Rwitajit Majumdar, Gwo-Jen Hwang, Hiroaki Ogata |
ICCE | 5 |
| 2020 | Applying Key Concepts Extraction foR Evaluating the Quality of Students' Highlights on e-Book
Albert C. M. Yang, Irene Y. L. Chen, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2020 | How Does The Quality of Students' Highlights Affect Their Learning Performance in e-Book Reading
Albert C. M. Yang, Irene Y. L. Chen, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2020 | Supporting Group Learning Using Pen Stroke Data Analytics
Daichi Yoshitake, Brendan Flanagan, Hiroaki Ogata |
ICCE | 3 |
| 2020 | Exploring student approaches to learning through sequence analysis of reading logsabstractIn this paper, we aim to explore students' study approaches (e.g., deep, strategic, surface) from the logs collected by an electronic textbook (eBook) system. Data was collected from 89 students related to their reading activities both in and out of the class in a Freshman English course. Students are given a task to study reading materials through the eBook system, highlight the text that is related to the main or supporting ideas, and answer the questions prepared for measuring their level of comprehension. Students in and out of class reading times and their usage of the marker feature were used as a proxy to understand their study approaches. We used theory-driven and data-driven approaches together to model the study approaches of students. Our results showed that three groups of students who have different study approaches could be identified. Relationships between students' reading behaviors and their academic performance is also investigated by using association rule mining analysis. Obtained results are discussed in terms of monitoring, feedback, predicting learning outcomes, and identifying problems with the content design. Gökhan Akçapinar, Mei-Rong Alice Chen, Rwitajit Majumdar, Brendan Flanagan, Hiroaki Ogata |
LAK | 5 |
| 2020 | Smart dictionary for e-book reading analyticsabstractReading, be it intensive or extensive, is one of the key skills required to master English as a foreign language (EFL) learner. Computerized e-book systems provide convenient access to learning materials inside and outside class. Students may regularly check the meaning of a word or expression using a separate tool to progress on their reading, which is not only disruptive but can lead to other learning problems. An example of a particular issue faced in EFL is when a student learns an inappropriate meaning of a polysemous word for the context in which it is presented. This is also a problem for teachers as they often need to investigate the cause. In this paper, we propose a smart dictionary integrated into an e-book reading platform. It allows the learner to search and note word definitions directly with the purpose of reducing context switching and improve vocabulary retention. Finally, we propose that learner interactions with the system can be analyzed to support EFL teachers in identifying possible problems that arise through dictionary use while reading. Louis Lecailliez, Brendan Flanagan, Mei-Rong Alice Chen, Hiroaki Ogata |
LAK | 4 |
| 2019 | Optimizing Assignment of Students to Courses based on Learning Activity Analytics
Atsushi Shimada 0001, Kousuke Mouri, Yuta Taniguchi, Hiroaki Ogata, Rin-Ichiro Taniguchi, Shin'ichi Konomi |
EDM | 4 |
| 2019 | Adaptive Support for Acquisition of Self-Direction Skills using Learning and Health DataabstractFor the 21st century learner, developing self-direction skill is crucial for both academic activities and maintaining one's healthy lifestyle. While there are technology supports for specific self-regulated learning tasks and health monitoring, research is limited on how to support development of meta-skill of self-direction process itself. In our work, we focus on designing seamless technology infrastructure to foster self-directedness of learners. We consider learning and physical activities data as a context and DAPER (data collection-analyze-plan-execution monitoring-reflect), as a data-driven self-direction skill execution and acquisition model. We bridge Learning Analytics and Quantified-Self approaches to develop the GOAL (Goal Oriented Active Learner) system to support synchronize-visualize-analyze multisource data regarding learners' learning and physical activities. This paper proposes a measurement rubric as a basis of adaptive scaffolding for skill development during the process. Rwitajit Majumdar, Huiyong Li 0002, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICALT | 6 |
| 2019 | Modeling Self-Planning and Promoting Planning Skills in a Data-Rich ContextabstractStudents' learning behaviors in an online learning environment can be automatically recorded by learning systems. Such learning records provide new opportunities to model students' learning process. On the other hand, it has become more common to see students having wearable devices that assist in tracking their personal physical activities. These activity tracking can be integrated into a data-rich context for training students for developing their data-informed self-direction skills. We are building the GOAL (Goal Oriented Active Learner) system to support the development of self-direction skills using learning and health activity data. A key phase in any self-directed activity is goal setting and planning. This paper will introduce how to build a new model for self-planning and support the acquisition of planning skills in the GOAL system. We combine learners’ data from the self-directed activity and their interaction trace to build the model in the GOAL system. The modeling involves computing of trend value and degree of plan difficulty, then diagnosis of planning skills using a 5-point scoring criteria. An adaptive support is selected based on the computed score. The contribution of this work is modeling planning and promoting planning skills in a data-driven manner. Our approach grounds the theory of self-direction skills and enables learners to develop the skills in everyday life. Huiyong Li 0002, Rwitajit Majumdar, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2019 | Exploring the Relationships between Students' Engagement and Academic Performance in the Digital Textbook SystemabstractIn this paper, we analyzed the relationships between students’ engagement and academic performance in the digital textbook system. To measure students’ engagement, we first extracted features from the students’ digital textbook reading logs (click-streams) that represent their engagement with the contents. Then, we used percentile rank transformation to create normalized engagement scores and an overall engagement score. In the analysis, we first investigated the correlation between engagement scores’ and the students’ final scores. Second, we modeled students’ transition patterns from the engagement to academic performance by using Markov Chains. Third, we analyzed engagement patterns of the students with different academic performance levels. Our results showed that there is a positive moderate correlation between students’ academic performance and their engagement with digital textbooks. Our results also revealed that a single engagement score can be used to measure students’ engagement with the system, which is easy to understand by non-expert users. We also introduced our dashboard interventions that are developed based on this engagement score. Gökhan Akçapinar, Mohammad Nehal Hasnine, Rwitajit Majumdar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 5 |
| 2019 | Identifying Reading Styles from E-book Log DataabstractIn this paper, a model for identifying e-book reading style is proposed and applied onto a learning log dataset. Learning log data available as non-structured data source is processed to identify patterns of reading exhibited by users using three main structures: reading sessions, reads and passages. These structures are used to extract information on users’ reading style to be used as part of user modeling process. The proposed model is applied on a set of log data generated by university students during one semester of digital resource use. The findings show students adopt predominantly receptive reading style, while responsive style occurs rarely. Further analysis revealed no significant relationships between reading style variables and student academic success for the Architecture course indicating the variables of responsive and receptive reading bring new information as part of user modeling. Ivica Boticki, Hiroaki Ogata, Karla Tomiek, Gökhan Akçapinar, Brendan Flanagan, Rwitajit Majumdar, Mohammad Nehal Hasnine |
ICCE | 2 |
| 2019 | Impacts of a knowledge sharing-based e-book system on students' language learning performance and behaviorsabstractE-books are becoming a popular medium for delivering learning materials in the globe. The gap between e-books and pedagogical practices has been highlighted since teachers do not generally integrate the e-book tool into their instruction in a way that facilitates student learning. In particular, new pedagogies in language teaching and learning tend to encourage students to acquire knowledge and use the language in real-life situations. Knowledge sharing with collaborative tasks in the class can be useful. Studies on knowledge sharing, specifically in language education, are limited. To this end, this study proposes a knowledge sharing-based e-book system to enhance students’ learning performance in an EFL course. This study adopts a quasi-experimental design. Seventy-one freshmen were recruited from two classes of a freshman English course at a university in northern Taiwan. The implication from this study finding might help teachers to identify suitable technology based on the learning needs of students, and help consider the ability of teachers to adopt appropriate technology and to fit specific learning activities. Mei-Rong Alice Chen, Hiroaki Ogata, Gwo-Jen Hwang, Gökhan Akçapinar, Brendan Flanagan, Hsiao-Ling Hsu |
ICCE | 2 |
| 2019 | Automatic Vocabulary Study Map Generation by Semantic Context and Learning Material AnalysisabstractLearning English as a foreign language is a core part of K-12 education for many countries in which English is not the main spoken language, and especially in Asia. One of the fundamental tasks that students encounter is to learn vocabulary that is a part of the assigned curriculum. These are often sourced from reference materials or assigned vocabulary lists and may not consider the learner’s current proficiency or the semantic context of words that were recently learnt. By suggesting vocabulary that have similar proficiency or semantic contexts to what a student has recently studied could improve and support vocabulary learning. In this paper, we propose a method for recommending words that have similar difficulty and semantic context with previous words learnt based on the analysis of prescribed textbooks for Japanese junior high school students. This research could be used to guide a student learning English by helping them select a sequence of vocabulary that is appropriate. Brendan Flanagan, Mei-Rong Alice Chen, Louis Lecailliez, Rwitajit Majumdar, Gökhan Akçapinar, Patrick Ocheja, Hiroaki Ogata |
ICCE | 7 |
| 2019 | Supporting Teachers in Group Work Formation and Analytics for In-class Group ActivitiesabstractThis paper introduces a system for collaborative learning which is designed to assist teachers in forming and grading groups for in-class group activities. The system is implemented as an extension of a learning analytics dashboard system and uses log data from a learning management system for operation. It consists of a group formation parameter console and the results console where formed groups are visualized and can be graded. The system supports teachers by using algorithms based on reliable learning evidence thereby simplifying the group formation process. All the group formation and grading data is logged thereby cyclically providing an infrastructure for subsequent collaborative learning activities. Changhao Liang, Ivica Boticki, Hiroaki Ogata |
ICCE | 3 |
| 2019 | Learning Evidence Analytics Framework (LEAF) in Practice: A2I2 based Teacher Adoption ApproachabstractLearning Analytics (LA) platforms can gather data from the teaching-learning interactions during a course. While there have been previous discussions regarding the individual tools, limited scholarship describes the utility of a LA framework for supporting evidence-based teaching-learning practices. We have proposed LEAF, a framework to bridge that gap. We implement the framework in a platform by integrating LMS, learning behaviour sensors such as an ebook reader, learning analytics dashboard and an evidence portal through Learning Tools Interoperability (LTI). The platform was then made available to teachers from different colleges in India to orchestrate their course offering for one semester. This paper describes the design of the teacher training module for the adoption of the platform based on the A2I2 model as its theoretical basis. The A2I2 model explicitly focuses on encouraging scholarship of learning and teaching among participating teachers and thus is an ideal candidate for utilizing an evidence-based framework. Rwitajit Majumdar, Jayakrishnan Madathil Warriem, Hiroyuki Kuromiya, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2019 | Supporting ubiquitous language learning with object and text detection technologiesabstractLearning log is defined as a digital record of what learners have learned in their daily lives using ubiquitous technologies. By using the ubiquitous learning system named SCROLL(System for Capturing and Remining Of Learning Logs), learners can save what they have learned in their daily lives with photo, such as location (latitude and longitude), learning place, and date and time of creation as a learning log. Although learners have many opportunities to learn words and meanings of objects with taking a photo in their daily lives, SCROLL is not implemented functions for supporting language learning with object and text detection. Therefore, this paper proposes a ubiquitous learning system to support language learning with object and text detection technologies. Kousuke Mouri, Noriko Uosaki, Chengjiu Yin, Atsushi Shimada 0001, Mohammad Nehal Hasnine, Keiichi Kaneko, Hiroaki Ogata |
ICCE | 7 |
| 2019 | Supporting Job-hunting Students to Learn Job-hunting Related Terms with SCROLL eBook and InCircleabstractIn this paper, we describe the support system for job-hunting students to learn job-hunting related terms using an eBook and a chat system. Job-hunting process is very unique and complicated in Japan. Job-hunting students face difficulties in many phases. Some job-hunting related terms are not used in daily conversation and very new to them. Therefore, it is necessary to support them. In fact, many universities in Japan have started providing their students with career education. The objective of this study is to examine whether or not the use of our chat system was effective in learning job-hunting related terms. The result of the evaluation showed there was no statistically significant difference. However the highest score was given when they were asked it's helpfulness. Noriko Uosaki, Kousuke Mouri, Takahiro Yonekawa, Chengjiu Yin, Hiroaki Ogata |
ICCE | 5 |
| 2019 | Developing E-Book Page Ranking Model for Pre-Class Reading RecommendationabstractIn this paper, we propose an E-Book Page Ranking (EBPR) method to rank e-book pages from the original learning material automatically. The proposed method ranks all the e-book pages by the class probabilities retrieved from machine learning models. The top-ranked e-book pages are then selected to form the pre-class reading (preview) recommendation. The proposed method extracts image features and text features from e-book page contents as well as the e-book usage features from students’ previous reading logs. In this paper, we test the performance of the proposed model with two different cases, with and without past e-book usage data. The experimental results showed the improvability of the model after taking into account learners’ past e-book usages. Christopher C. Y. Yang, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2019 | Measuring Analysis Skill in Data-informed Self-directed ActivitiesabstractCurrent technology enables tracking of various learning and physical activities. User can use the data to analyze issues in the execution of those activities. Current work focuses on this analysis phase of data-informed self-directed activity cycle and proposes a measurement framework of the skill while learners work in a data-rich context. It is a paradigm shift to support and measure analysis skill from previous approaches which mostly rely on questionnaire-based measurements. In our approach, we emphasize the monitoring of learner’s analytical process and the automatic evaluation of the analysis results through system. Based on that, an automated measurement is carried out in the system to depict learner’s analysis skill and changes of skill. Additionally, we elaborate the framework in the context of the GOAL system which provides affordances of analysis based on physical and reading activity data. Rwitajit Majumdar, Huiyong Li 0002, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2019 | An Analysis of Learning Behavior Patterns with Different Devices and WeightsabstractWith e-learning systems gradually being implemented, researchers worldwide have started devoting increasing attention to Learning Analytics. At Kobe university, a digital textbook reading system has been developed to collect learning logs in the face-to-face classroom. In a previous study, k-means clustering was implemented to analyze learning behavior patterns; however, there were problems such as few variables for clustering and a failure to consider weighting of the learning elements. Therefore, in this study we applied clustering by increasing the number of learning elements and assigned weights to the learning elements, then analyzed the learning behavioral patterns. We found some behavioral patterns of students who can save learning time if they effectively write memos and add markers. Chengjiu Yin, Kodai Yamaguchi, Noriko Uosaki, Hiroaki Ogata |
ICCE | 6 |
| 2019 | Exploring the Relationships between Reading Behavior Patterns and Learning Outcomes Based on Log Data from E-Books: A Human Factor ApproachabstractOnline learning environments presently accumulate large amounts of log data. Analysis of learning behaviors from these log data is expected to benefit instructors and learners. This study was intended to identify effective measures from e-book materials used at Kyushu University and to employ these measures for analyzing learning behavioral patterns. In an evaluation, students were grouped into four clusters using k-means clustering, and their learning behavioral patterns were analyzed. We examined whether the learning behavioral patterns exhibited relations with the learning outcomes. The results reveal that the learning behavior of “backtrack” style reading exerts a significant positive influence on learning effectiveness, which can aid students to learn more efficiently. Chengjiu Yin, Masanori Yamada, Misato Oi, Atsushi Shimada 0001, Fumiya Okubo, Kentaro Kojima, Hiroaki Ogata |
Int. J. Hum. Comput. Interact. | 7 |
| 2018 | Investigating Students' e-Book Reading Patterns with Markov Chains
Gökhan Akçapinar, Rwitajit Majumdar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2018 | Joint Activity on Learner Performance Prediction using the BookRoll Dataset
Brendan Flanagan, Weiqin Chen 0001, Hiroaki Ogata |
ICCE | 3 |
| 2018 | Automatic Generation of Contents Models for Digital Learning Materials
Brendan Flanagan, Gökhan Akçapinar, Rwitajit Majumdar, Hiroaki Ogata |
ICCE | 4 |
| 2018 | Towards Final Scores Prediction over Clickstream Using Machine Learning Methods
Mohammad Nehal Hasnine, Gökhan Akçapinar, Brendan Flanagan, Rwitajit Majumdar, Kousuke Mouri, Hiroaki Ogata |
ICCE | 6 |
| 2018 | Image Recommendation for Informal Vocabulary Learning in a Context-aware Learning Environment
Mohammad Nehal Hasnine, Kousuke Mouri, Brendan Flanagan, Gökhan Akçapinar, Noriko Uosaki, Hiroaki Ogata |
ICCE | 6 |
| 2018 | Analysis of Behavior Sequences of Students by Using Learning Logs of Digital Books
Noriko Uosaki, Hiroaki Ogata, Kousuke Mouri, Chengjiu Yin |
ICCE | 3 |
| 2018 | GOAL: Supporting Learner's Development of Self-Direction Skills using Health and Learning Data
Rwitajit Majumdar, Huiyong Li 0002, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 6 |
| 2018 | Seamless Learning Infrastructure for Finding Relationships Between Lectures and Practical Training
Kousuke Mouri, Mohammad Nehal Hasnine, Takafumi Tanaka, Noriko Uosaki, Chengjiu Yin, Atsushi Shimada 0001, Hiroaki Ogata |
ICCE | 7 |
| 2018 | Beyond Learning Analytics: Framework for Technology-Enhanced Evidence-Based Education and Learning
Hiroaki Ogata, Rwitajit Majumdar, Gökhan Akçapinar, Mohammad Nehal Hasnine, Brendan Flanagan |
ICCE | 1 |
| 2018 | SCROLL Dataset in the Context of Ubiquitous Language Learning
Hiroaki Ogata, Kousuke Mouri, Noriko Uosaki, Mohammad Nehal Hasnine, Victoria Abou Khalil, Brendan Flanagan |
ICCE | 1 |
| 2018 | How We Can Support International Students' Job Hunting in Japan Seamlessly
Noriko Uosaki, Kousuke Mouri, Chengjiu Yin, Hiroaki Ogata |
ICCE | 4 |
| 2018 | Transferring Learning Footprints Across Versions within E-Book Reader
Christopher C. Y. Yang, Gökhan Akçapinar, Brendan Flanagan, Hiroaki Ogata |
ICCE | 4 |
| 2018 | Connecting decentralized learning records: a blockchain based learning analytics platformabstractAs Learners move from one learning environment to another, there is a key necessity of taking with them a proof of previous learning achievements or experiences. In most cases, this is either expressed in terms of receipt of scores or a certificate of completion. While this may be sufficient for enrollment and other administrative decisions, it poses some limitations to the depth of learning analytics and consequently a slow onboarding process. Also, with different institutions having their learning data isolated from each other, it becomes more difficult to easily access a learner's learning history for all learning activities on other systems. In this paper, we propose a blockchain based approach for connecting learning data across different Learning Management Systems (LMS), Learning Record Stores (LRS), institutions and organizations. Leveraging on unique properties of blockchain technology, we also propose solutions to ensuring learning data consistency, availability, immutability, security, privacy and access control. Patrick Ocheja, Brendan Flanagan, Hiroaki Ogata |
LAK | 3 |
| 2018 | Online change detection for monitoring individual student behavior via clickstream data on E-book systemabstractWe propose a new change detection method using clickstream data collected through an e-Book system. Most of the prior work has focused on the batch processing of clickstream data. In contrast, the proposed method is designed for online processing, with the model parameters for change detection updated sequentially based on observations of new click events. More specifically, our method generates a model for an individual student and performs minute-by-minute change detection based on click events during a classroom lecture. We collected clickstream data from four face-to-face lectures, and conducted experiments to demonstrate how the proposed method discovered change points and how such change points correlated with the students' performances. Atsushi Shimada 0001, Yuta Taniguchi, Fumiya Okubo, Shin'ichi Konomi, Hiroaki Ogata |
LAK | 5 |
| 2017 | A meaningful discovery learning environment for e-book learnersabstractIn this paper, we present a system framework making use of e-book logs for visualization learning support systems intended to provide meaningful learning environment for e-book learners. An ontology-based visualization support system, which supports not only meaningful reception learning but also meaningful discovery learning, is designed and developed to help e-book learners to effectively construct their knowledge frameworks. Three main functions are provided in this personalized visualization support system: (1) for any knowledge of E-books, the learner can get its e-book location information and a relation map including its relevance knowledge and their relations; (2) for any page range of any e-book, the learner can get a relation map including knowledge shown in those pages, their relevant KPs and their upper concepts; (3) for any learning period, the learner can check the knowledge map including the knowledge they had read, the relevance knowledge and their relations. Compared to the passive reception environment, in meaningful discovery learning environment learners are encouraged to actively locate new knowledge in their own knowledge framework and restructure existing knowledge by detecting hidden relations between relevant KPs through reflecting the attributes of acquired knowledge visually. Meanwhile the iterative procedure of confirmation and modification in their own relation map ensures that they check the logical consistency of their ideas and clear up misunderstandings. Atsushi Shimada 0001, Hiroaki Ogata, Jingyun Wang 0003 |
EDUCON | 2 |
| 2017 | Real-Time Learning Analytics of e-Book Operation Logs for On-site Lecture SupportabstractA real-time learning analytics system is proposed for in-classroom use. We used an e-learning system and an e-book system to collect real-time learning activities during lectures. The collected logs were analyzed and presented visually on a web-based system for the teacher. The teacher can monitor how many students are viewing the same page as the teacher, whether they are following the explanation, or if they are reading previous or subsequent pages. Through a case study, we confirmed the effectiveness of the real-time learning analytics system, in terms of high synchronization between the teacher and the students, i.e., that the majority of students followed the teacher's explanation and added more bookmarks, highlights, or notes on the e-book, compared with the control group where the teacher did not use our system. Atsushi Shimada 0001, Kousuke Mouri, Hiroaki Ogata |
ICALT | 3 |
| 2017 | Face-to-Face Teaching Analytics: Extracting Teaching Activities from E-Book Logs via Time-Series AnalysisabstractTo discover teaching knowledge efficiently, we must extract the various teaching activities from educational data. In this paper, through the use of e-book logs and techniques of time-series analysis, we describe a method of practicing teaching analytics in face-to-face classes, one which enable us to extract the teaching activity efficiently and accurately. Daiki Suehiro, Yuta Taniguchi, Atsushi Shimada 0001, Hiroaki Ogata |
ICALT | 4 |
| 2017 | Revealing Hidden Impression Topics in Students' Journals Based on Nonnegative Matrix FactorizationabstractStudents' reflective writings are useful not only for students themselves but also teachers. It is important for teachers to know which concepts were understood well by students and which concepts were not, to continuously improve their classes. However, it is difficult for teachers to thoroughly read the journals of more than one hundred students. In this paper, we propose a novel method to extract common topics and students' common impressions against them from students' journals. Weekly keywords are discovered from journals by scoring noun words with a measure based on TF-IDF term weighting scheme, and then we analyze co-occurrence relationships between extracted keywords and adjectives. We employs nonnegative matrix factorization, one of the topic modeling techniques, to discover the hidden impression topics from the co-occurrence relationships. As a case study, we applied our method on students' journals of the course "Information Science" held in our university. Our experimental results show that conceptual keywords are successfully extracted, and four significant impression topics are identified. We conclude that our analysis method can be used to collectively understand the impressions of students from journal texts. Yuta Taniguchi, Daiki Suehiro, Atsushi Shimada 0001, Hiroaki Ogata |
ICALT | 4 |
| 2017 | Using Learning Analytics to Support Computer-Assisted Language Learning
Huiyong Li 0002, Hiroaki Ogata, Tomoyuki Tsuchiya, Yubun Suzuki, Satoru Uchida, Hiroshi Ohashi, Shin'ichi Konomi |
ICCE | 2 |
| 2017 | Integration of Learning Analytics Research and Production Systems While Protecting Privacy
Brendan Flanagan, Hiroaki Ogata |
ICCE | 2 |
| 2017 | Enhancing Seamless Learning Using Learning Log System
Noriko Uosaki, Hiroaki Ogata, Kousuke Mouri, Chengjiu Yin |
ICCE | 2 |
| 2017 | Learning analytics and policy (LAP): international aspirations, achievements and constraintsabstractThe Learning Analytics and Policy (LAP) workshop explores and documents the ways in which policies at national and regional level are shaping the development of learning analytics. It brings together representatives from around the world who report on the circumstances in their own country. The workshop is preceded by an information gathering phase, and followed by the authoring of a report. The aspirations, achievements and constraints in the different countries are contrasted and documented, providing a valuable resource for the future development of learning analytics. Megan Bowe, Weiqin Chen 0001, Dai Griffiths, Tore Hoel, Hiroaki Ogata, Griff Richards |
LAK | 6 |
| 2017 | Real-time learning analytics for C programming language coursesabstractMany universities choose the C programming language (C) as the first one they teach their students, early on in their program. However, students often consider programming courses difficult, and these courses often have among the highest dropout rates of computer science courses offered. It is therefore critical to provide more effective instruction to help students understand the syntax of C and prevent them losing interest in programming. In addition, homework and paper-based exams are still the main assessment methods in the majority of classrooms. It is difficult for teachers to grasp students' learning situation due to the large amount of evaluation work. To facilitate teaching and learning of C, in this article we propose a system---LAPLE (Learning Analytics in Programming Language Education)---that provides a learning dashboard to capture the behavior of students in the classroom and identify the different difficulties faced by different students looking at different knowledge. With LAPLE, teachers may better grasp students' learning situation in real time and better improve educational materials using analysis results. For their part, novice undergraduate programmers may use LAPLE to locate syntax errors in C and get recommendations from educational materials on how to fix them. Xinyu Fu 0002, Atsushi Shimada 0001, Hiroaki Ogata, Yuta Taniguchi, Daiki Suehiro |
LAK | 3 |
| 2017 | 2nd cross-LAK: learning analytics across physical and digital spacesabstractStudent's learning happens where the learner is, rather than being constrained to a single physical or digital environment. It is of high relevance for the LAK community to provide analytics support in blended learning scenarios where students can interact at diverse learning spaces and with a variety of educational tools. This workshop aims to gather the sub-community of LAK researchers, learning scientists and researchers in other areas, interested in the intersection between ubiquitous, mobile and/or classroom learning analytics. The underlying concern is how to integrate and coordinate learning analytics seeking to understand the particular pedagogical needs and context constraints to provide learning analytics support across digital and physical spaces. The goals of the workshop are to consolidate the Cross-LAK sub-community and provide a forum for idea generation that can build up further collaborations. The workshop will also serve to disseminate current work in the area by both producing proceedings of research papers and working towards a journal special issue. Roberto Martínez-Maldonado, Davinia Hernández Leo, Abelardo Pardo, Hiroaki Ogata |
LAK | 4 |
| 2017 | Learning analytics in a seamless learning environmentabstractThis paper describes seamless learning analytics methods of VASCORLL (Visualization and Analysis System for COnnecting Relationships of Learning Logs). VASCORLL is a system for visualizing and analyzing the learning logs collected by the seamless learning system, which supports language learning in the real-world. As far, several studies have been made in the seamless learning environments in order to bridge formal learning over informal learning. However, their focus was the implementation of the seamless learning environment in education. This study focuses on visualizing and analyzing learning logs collected in the seamless learning environment. This paper describes how our analytics could contribute to bridging the gap between formal and informal learning. An experiment was conducted to evaluate 1) whether our developed VASCORLL is effective in connecting the words learned in formal learning to the ones learned in informal learning, 2) which social network algorithm is effective to enhance learning in the seamless learning environment. Twenty international students participated in the evaluation experiment, and they were able to increase their learning opportunities by using VASCORLL. In addition, it was found that the betweenness centrality is useful in finding central words bridging formal and informal learning.1 Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki |
LAK | 2 |
| 2017 | Reproducibility of findings from educational big data: a preliminary studyabstractIn this paper, we examined whether previous findings on educational big data consisting of e-book logs from a given academic course can be reproduced with different data from other academic courses. The previous findings showed that (1) students who attained consistently good achievement more frequently browsed different e-books and their pages than low achievers and that (2) this difference was found only for logs of preparation for course sessions (preview), not for reviewing material (review). Preliminarily, we analyzed e-book logs from four courses. The results were reproduced in only one course and only partially, that is, (1) high achievers more frequently changed e-books than low achievers (2) for preview. This finding suggests that to allow effective usage of learning and teaching analyses, we need to carefully construct an educational environment to ensure reproducibility. Misato Oi, Masanori Yamada, Fumiya Okubo, Atsushi Shimada 0001, Hiroaki Ogata |
LAK | 5 |
| 2017 | A neural network approach for students' performance predictionabstractIn this paper, we propose a method for predicting final grades of students by a Recurrent Neural Network (RNN) from the log data stored in the educational systems. We applied this method to the log data from 108 students and examined the accuracy of prediction. From the experimental results, comparing with multiple regression analysis, it is confirmed that an RNN is effective to early prediction of final grades. Fumiya Okubo, Takayoshi Yamashita, Atsushi Shimada 0001, Hiroaki Ogata |
LAK | 4 |
| 2017 | An SNS-based model for finding collaborative partners
Chengjiu Yin, Jane Yau, Gwo-Jen Hwang, Hiroaki Ogata |
Multim. Tools Appl. | 4 |
| 2016 | Browsing-Pattern Mining from e-Book Logs with Non-negative Matrix Factorization
Atsushi Shimada 0001, Fumiya Okubo, Hiroaki Ogata |
EDM | 3 |
| 2016 | Bayesian Network for Predicting Students' Final Grade Using e-Book Logs in University EducationabstractThis paper describes visualization and analysis methods using educational big data collected by research project at Kyushu University in Japan. The project uses an e-book system called BookLooper, Moodle, and Mahara. Logs for this analytics were collected from 99 first-year students in an information science course at Kyushu University. The number of logs are collected approximately 330,000, and this paper visualize and analyze the collected logs. The purpose of this study is to predict students' final grade and to profile visualization and analysis results. The prediction of this study shows that it leads to discoveries of students who fail to make the grade. Kousuke Mouri, Fumiya Okubo, Atsushi Shimada 0001, Hiroaki Ogata |
ICALT | 4 |
| 2016 | Onomatopoeia Learning Support for Japanese Language Learners Using Ubiquitous Learning Log System with eBookabstractThis paper describes our study where we aim to support onomatopoeia learning for Japanese language learners using the ubiquitous learning log system called SCROLL (System for Capturing and Reminding Of Learning Log). We have improved our system by adding a new function EPUB (Electronic PUBlication) in order to improve quiz efficiency and to enrich its contents. Our pilot evaluation indicates that the quiz function worked sufficiently. However, some user-unfriendliness was pointed out. Noriko Uosaki, Mahiro Kiyota, Kousuke Mouri, Hiroaki Ogata, Mahdi Choyekh |
ICALT | 4 |
| 2016 | AETEL: Supporting Seamless Learning and Learning Log Recording with e-Book SystemabstractSeamless learning is an approach in which learners can build a relationship between their formal learning and informal learning. One of the issues of seamless learning is the way to connect formal learning with informal learning. To tackle this issue, we propose an e-Book based system in this paper. Our proposal learning system has two functions. One is an e-Book viewing function which can log what learners learned from e-Books as learning logs. The other is a seamless learning function which enables users to connect formal learning with informal learning. In this paper, we introduce our system and its evaluation. Mahiro Kiyota, Kousuke Mouri, Noriko Uosaki, Hiroaki Ogata |
ICCE | 4 |
| 2016 | Visualization for Analyzing Learning Logs in the Seamless Learning EnvironmentabstractThis paper describes an innovative visualization method called Seamless Learning Visualization (SLV). As far, several researchers have introduced in the seamless learning environments in order to bridge formal learning over informal learning. However, their focus was the implementation of the seamless learning environment. Our proposed SLV is to visualize and analyze learning logs collected in the seamless learning environment. This paper describes how our visualization method could contribute to bridging the gap between formal and informal learning. An experiment was conducted to evaluate (1) whether SLV would be beneficial in terms of usability in finding words in the seamless learning environment and (2) Which visualization layout (Random layout, Force-directed layout, Yifan-multilevel layout and SLV) is effective in supporting learning in the seamless learning environment. Fifteen international students participated in the evaluation experiment in order to evaluate (1) and (2). In the experiment, it was found that SLV was very beneficial in terms of usability and effectiveness for learning than previous visualization methods. Kousuke Mouri, Hiroaki Ogata, Mahiro Kiyota, Noriko Uosaki |
ICCE | 2 |
| 2016 | Learning Analytics in Ubiquitous Learning Environments: Self-Regulated Learning PerspectiveabstractThis research aims to investigate the relationship between self-regulated learning awareness, learning behaviors, and learning performance in ubiquitous learning environments. In order to do so, psychometric data about self-regulated learning and log data such as marker, annotation, accessing device types that stored the learning management system were collected and analyzed using multiple regression analysis with stepwise method. The results indicated that self-efficacy, internal value, and the number of read slides had a significant influence on the final score, and the awareness of cognitive learning strategy use has slightly significant power to predict the final score. Masanori Yamada, Fumiya Okubo, Misato Oi, Atsushi Shimada 0001, Kentaro Kojima, Hiroaki Ogata |
ICCE | 6 |
| 2016 | Cross-LAK: learning analytics across physical and digital spacesabstractIt is of high relevance to the LAK community to explore blended learning scenarios where students can interact at diverse digital and physical learning spaces. This workshop aims to gather the sub-community of LAK researchers, learning scientists and researchers from other communities, interested in ubiquitous, mobile and/or face-to-face learning analytics. An overarching concern is how to integrate and coordinate learning analytics to provide continued support to learning across digital and physical spaces. The goals of the workshop are to share approaches and identify a set of guidelines to design and connect Learning Analytics solutions according to the pedagogical needs and contextual constraints to provide support across digital and physical learning spaces. Roberto Martínez-Maldonado, Davinia Hernández Leo, Abelardo Pardo, Daniel D. Suthers, Kirsty Kitto, Sven Charleer, Naif R. Aljohani, Hiroaki Ogata |
LAK | 8 |
| 2015 | Analysis of Ubiquitous-Learning Logs Using Spatio-Temporal Data MiningabstractThis paper proposes an approach of the spatio-temporal data mining in order to predict next learning steps (next ubiquitous learning logs to be learned) in accordance with their situations or context from past learners' experiences in their daily lives accumulated in the ubiquitous learning system called SCROLL (System for Capturing and Reminding of Learning Log). Ubiquitous learning log (ULL) is defined as a digital record of what learners have learned in their daily life using ubiquitous technologies. It allows learners to log their learning experiences with photos, audios, videos, location, RFID tag and sensor data, and to share and reuse ULL with others. This paper describes some data mining methods using the association analysis in order to detect effective and efficient learning logs for learner from relationships among ubiquitous learning logs collected by a number of the research studies for a long period of the SCROLL project (2011~2014). Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki |
ICALT | 2 |
| 2015 | Informal Learning Behavior Analysis Using Action Logs and Slide Features in E-TextbooksabstractThis paper discusses learning behavior analysis using a learning management system (LMS) and an e-textbook system. We collected a large number of operation logs from e-textbooks to analyze the process of learning. In addition, we conducted a quiz to check the level of understanding. In our study, we especially focus on an analysis of the relationship between learning behavior in informal learning and its effectiveness in the corresponding quiz. We apply a machine learning and classification methodology for behavior analysis. Our experimental results demonstrate that students who undertake good informal learning achieve better scores in quizzes. Atsushi Shimada 0001, Fumiya Okubo, Chengjiu Yin, Kentaro Kojima, Masanori Yamada, Hiroaki Ogata |
ICALT | 6 |
| 2015 | Career Support for International Students in Japan Using Ubiquitous Learning Log SystemabstractThis paper describes our study in progress where we have aimed to enhance career support for international students using the learning log system called SCROLL (System for Capturing and Reminding Of Learning Log). Job-hunting process is very unique in Japan. Students should begin the job hunting in their junior year and it takes 8.9 months on average. A questionnaire survey reveals that top two anxieties that international students have are language-related and lack of information. In order to reduce these anxieties, we propose career support system using SCROLL. The result of its pilot evaluation demonstrates that the users benefited from the system and that it will be expected to contribute to the solution of the two anxieties, while it reveals some user unfriendliness in its interface. Our future works include its improvement as well as the refinement of its message and recommendation functions. Noriko Uosaki, Hiroaki Ogata, Kousuke Mouri, Erdenesaikhan Lkhagvasuren |
ICALT | 2 |
| 2015 | Preliminary Research on Self-Regulated Learning and Learning Logs in a Ubiquitus Learning EnvironmentabstractThis preliminary research investigates the relationship between psychometric data and learning behaviors in the learning analytics research field, specifically, the relationship between self-regulated learning and learning behavior. The results of this limited research show that marker and annotation use have a weak significant relationship with self-efficacy and the intrinsic value of learning materials. Masanori Yamada, Chengjiu Yin, Atsushi Shimada 0001, Kentaro Kojima, Fumiya Okubo, Hiroaki Ogata |
ICALT | 6 |
| 2015 | Error Log Analysis in C Programming Language Courses
Xinyu Fu 0002, Chengjiu Yin, Atsushi Shimada 0001, Hiroaki Ogata |
ICCE | 4 |
| 2015 | Error Log Analysis for Improving Educational Materials in C Programming Language Courses
Xinyu Fu 0002, Chengjiu Yin, Atsushi Shimada 0001, Hiroaki Ogata |
ICCE | 4 |
| 2015 | Visualization of e-Book Learning Logs
Sachio Hirokawa, Chengjiu Yin, Jingyun Wang 0003, Misato Oi, Hiroaki Ogata |
ICCE | 5 |
| 2015 | Seamless Learning System Based on e-Book
Mahiro Kiyota, Kousuke Mouri, Hiroaki Ogata |
ICCE | 3 |
| 2015 | A Proposal of e-Book Based Seamless Learning System
Mahiro Kiyota, Kousuke Mouri, Hiroaki Ogata |
ICCE | 3 |
| 2015 | Visualization and Analysis System for Connecting Relationships of Learning Logs
Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki |
ICCE | 2 |
| 2015 | Supporting Real-world Language Learning Based on Ubiquitous Learning Analytics
Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki |
ICCE | 2 |
| 2015 | Recommendation Method in the Context of Real-world Language Learning
Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki |
ICCE | 2 |
| 2015 | Cubic Gantt Chart as Visualization Tool for Learning Activity Data
Shohei Nakamura, Kosuke Kaneko, Yoshihiro Okada, Chengjiu Yin, Hiroaki Ogata |
ICCE | 5 |
| 2015 | e-Book-based Learning Analytics in University Education
Hiroaki Ogata, Chengjiu Yin, Misato Oi, Fumiya Okubo, Atsushi Shimada 0001, Kentaro Kojima, Masanori Yamada |
ICCE | 1 |
| 2015 | Analysis of Preview and Review Patterns in Undergraduates' E-Book Logs
Misato Oi, Fumiya Okubo, Atsushi Shimada 0001, Chengjiu Yin, Hiroaki Ogata |
ICCE | 5 |
| 2015 | Analysis of Links among E-books in Undergraduates' E-Book Logs
Misato Oi, Chengjiu Yin, Fumiya Okubo, Atsushi Shimada 0001, Kentaro Kojima, Masanori Yamada, Hiroaki Ogata |
ICCE | 7 |
| 2015 | Visualization and Prediction of Learning Activities by Using Discrete Graphs
Fumiya Okubo, Atsushi Shimada 0001, Chengjiu Yin, Hiroaki Ogata |
ICCE | 4 |
| 2015 | Automatic Summarization of Lecture Slides for Enhanced Student Preview
Atsushi Shimada 0001, Fumiya Okubo, Chengjiu Yin, Hiroaki Ogata |
ICCE | 4 |
| 2015 | Analysis of Preview Behavior in E-Book System
Atsushi Shimada 0001, Fumiya Okubo, Chengjiu Yin, Misato Oi, Kentaro Kojima, Masanori Yamada, Hiroaki Ogata |
ICCE | 7 |
| 2015 | Japanese Onomatopoeia Learning Support for International Students Using SCROLL
Noriko Uosaki, Hiroaki Ogata, Kousuke Mouri, Erdenesaikhan Lkhagvasuren |
ICCE | 2 |
| 2015 | Visualization Supports for E-book Users from Meaningful Learning Perspective
Jingyun Wang 0003, Hiroaki Ogata, Chengjiu Yin, Atsushi Shimada 0001 |
ICCE | 2 |
| 2015 | Identifying and Analyzing the Learning Behaviors of Students using e-BooksabstractAnalyses on students’ learning behaviors comprise an important thrust in education research. This study focused on e-books system used in the classroom and this system recorded students’ learning logs in their daily academic life. These learning logs can be used to analysis students’ learning behaviors. By performing partial correlation analysis, the study found that a number of learning behaviors have a significant relation with students’ test scores. Chengjiu Yin, Fumiya Okubo, Atsushi Shimada 0001, Misato Oi, Sachio Hirokawa, Hiroaki Ogata |
ICCE | 6 |
| 2015 | Analyzing the Features of Learning Behaviors of Students using e-Books
Chengjiu Yin, Fumiya Okubo, Atsushi Shimada 0001, Misato Oi, Sachio Hirokawa, Masanori Yamada, Kentaro Kojima, Hiroaki Ogata |
ICCE | 8 |
| 2015 | Ubiquitous learning analytics in the context of real-world language learningabstractThis paper describes a method of the visualization and analysis for mining useful learning logs from numerous learning experiences that learners have accumulated in the real world as the ubiquitous learning logs. Ubiquitous Learning Log (ULL) is defined as a digital record of what learners have learned in the daily life using ubiquitous technologies. It allows learners to log their learning experiences with photos, audios, videos, location, RFID tag and sensor data, and to share and reuse ULL with others. By constructing real-world corpora which comprise of accumulated ULLs with information such as what, when, where, and how learners have learned in the real world and by analyzing them, we can support learners to learn more effectively. The proposed system will predict their future learning opportunities including their learning patterns and trends by analyzing their past ULLs. The prediction is made possible both by network analysis based on ULL information such as learners, knowledge, place and time and by learners' self-analysis using time-map. By predicting what they tend to learn next in their learning paths, it provides them with more learning opportunities. Accumulated data are so big and the relationships among the data are so complicated that it is difficult to grasp how closely the ULLs are related each other. Therefore, this paper proposes a system to help learners to grasp relationships among learners, knowledge, place and time, using network graphs and network analysis. Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki |
LAK | 2 |
| 2014 | Location Based Context-Aware Support for Second Language Learning Using Ubiquitous Learning Lots
Songran Liu, Hiroaki Ogata, Kousuke Mouri |
ICCE | 2 |
| 2014 | Learning Log Dashboard: to see your own progressabstractThis paper proposes a learning log dashboard interface design issues for a mobile learning system called SCROLL (System for Capturing and Reusing Ubiquitous Learning Log). SCROLL allows learners to record and share their daily learning experiences as ULL (ubiquitous learning logs) with locations, photos, words, sentences and/or videos using their smartphones. Moreover SCROLL provides quiz that are generated from ULL so that they can remember past learning experiences. Learners add many words, photos on their account and always repeat this action, like as continuous training. It will be sometimes happened forgetting quiz even works on those words in the past. The overall goal of this learning log dashboard is to enable learners to reflect on their own activity, to reinforce what they have learned and to learn from each other. Learners also can see the information about her/his progress on learning log dashboard. Erdenesaikhan Lkhagvasuren, Kenji Matsuura, Kousuke Mouri, Hiroaki Ogata |
ICCE | 4 |
| 2014 | Visualization for Analyzing Ubiquitous Learning LogsabstractThis paper describes a system that can be used to visualize some ubiquitous learning logs to grasp and discover several learning flow and timing. Visualization of the system is based on vast amount of learning data in ubiquitous learning environment. Ubiquitous Learning Log (ULL) is defined as a digital record of what learners have learned in the daily life using ubiquitous technologies. It allows learners to log their learning experiences with photos, audios, videos, location, RFID tag and sensor data, and to share and to reuse ULL with others. This paper will reveal about the relationship between the ubiquitous learning logs and learners by using network graph. Also, this paper will explicate the system through which learners can grasp their learning time, histories, knowledge and location. Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki, Songran Liu |
ICCE | 2 |
| 2014 | Ubiquitous Learning Logs Analytics
Kousuke Mouri, Hiroaki Ogata, Noriko Uosaki, Songran Liu |
ICCE | 2 |
| 2014 | Seamless Flipped Classroom Using SCROLL in CALL ClassabstractIn this paper we have explored flipped classroom. How we can encourage students to learn outside-class is a key issue in flipped classroom. In our previous study it was found that our system called SCROLL (System for Capturing and Reminding Of Learning Log) contributed to the students’ increased involvement in outside-class learning. SCROLL is expected to play an important role in its effective implementation of flipped classroom. A pilot evaluation was conducted to examine the effectiveness of our proposed learning scenario using SCROLL and SNS(Social Networking System). The result showed that it enhanced the students’ outside-class learning, though more examination is necessary to conclude its contribution since there are other factors which contributed to boosting up outside learning time. Timing of posting outside-class task was also examined and the period of two weeks was found to be appropriate. Noriko Uosaki, Hiroaki Ogata, Kousuke Mouri |
ICCE | 2 |
| 2014 | Smart Phone based Data Collecting System for Analyzing Learning BehaviorsabstractNowadays, it is a hot topic to analyze the huge amount of data in the world. This issue also exists in the learning during students’ life. The learning data are collected only to record students’ learning status. As a result, most learning data are not used to improve the quality of learning for students. In this paper, we propose an order made education system, which can recommend students to select the courses they want to learn. In order to analyze students’ learning behaviors, we collect students’ learning data by using mobile devices. Chengjiu Yin, Fumiya Okubo, Atsushi Shimada 0001, Kentaro Kojima, Masanori Yamada, Hiroaki Ogata, Naomi Fujimura |
ICCE | 6 |
| 2013 | Meta-Documentation: The Dissemination of the Tacit Knowledge Inherently Attached to Organisational DocumentsabstractIn this paper, we discuss the addition of technologically supported informal social networks for the exchange of previously implicit information attached to documentation within formal organisational frameworks. Focusing on the implementation of technologies to support this social interaction, we first look at why social networks are a topic discussed in recent times, then we put forward plans for a new system developed for this purpose. Steven A. Cook, Hiroaki Ogata, Mark G. Elwell |
ICCE | 2 |
| 2013 | Acculturation in Context: Knowledge Sharing Through Ubiquitous TechnologiesabstractIn this paper, we present plans for a retooled ubiquitous computer system that works towards facilitating knowledge acquisition and knowledge dissemination between learners during the process of acculturation. Focused on the foreign population of JAIST (Japan Advanced Institu te of Science and Technology - a Japanese post graduate university in Japan), the system provides a platform on which to study the behaviour of participants, and also the process of acculturation dynamically in context. In addition, the study works toward s understanding the feasibility of using such ubiquitous systems as possible support mechanisms in the future. In the current global environment, human beings via their own experiences acculturate at different speeds, and with different levels of success. By incorporating ubiquitous technology into the environment in which people are acculturating, we provide a new way to analyse the process of acculturation dynamically, and provide assertions as to how the system may benefit users in the future. Steven A. Cook, Hiroaki Ogata, Mark G. Elwell, Mitsuru Ikeda |
ICCE | 2 |
| 2013 | Analysis of Ubiquitous Learning Logs in the Context of Science Communications in a Museum
Hiroaki Ogata, Kousuke Mouri, Mayumi Bono, Ayami Joh, Katsuya Takanashi, Akihiro Osaki, Hiromi Ochiai, Yuko Morita |
ICCE | 1 |
| 2013 | Enhancing Outside-class Learning using Ubiquitous Learning Log System
Noriko Uosaki, Hiroaki Ogata, Bin Hou, Kousuke Mouri |
ICCE | 2 |
| 2012 | How to increase ubiquitous experiential learningabstractThis paper introduces a mechanism in a ubiquitous learning log system, which is designed to guide learners to participate in the learning activities recommended by the system. In order to provoke learners’ interests on the knowledge, the recommended knowledge is related to both what learners are studying and the learners’ current learning contexts. And to help learners grasp the knowledge, in the second step the mechanism provides learners with relevant learning activities to guide learners to use the recommended knowledge. Hiroaki Ogata, Bin Hou, Noriko Uosaki |
ICCE | 2 |
| 2011 | Passive Capture for Ubiquitous Learning Log Using SenseCamabstractIn our previous works, we developed a system named SCROLL in order to log, organize, recall and evaluate the learning log. However up to now, we just use an active mode to record logs. This means that a learner must take a capture of learned contents consciously and most of learning chances be lost unconsciously. In order to solve this problem, we started a project named PACALL (Passive Capture for Learning Log) in order to have a passive capture using SenseCam. With the help of SenseCam, learner’s activity can be captured as a series of images. We also developed a system to help a learner find the important images by analyzing sensor data and images processing technology. Finally, the selected images will be uploaded to the current SCROLL system as ubiquitous learning logs. This research suggests that SenseCam can be used to do passive capture of learning experiences and workload of reflection can be reduced by analyzing sensor data of SenseCam. Bin Hou, Hiroaki Ogata, Toma Kunita, Noriko Uosaki, Yoneo Yano |
ICCE | 2 |
| 2011 | PACALL: Passive Capture for Ubiquitous Learning Log Using SenseCam
Bin Hou, Hiroaki Ogata, Toma Kunita, Noriko Uosaki, Yoneo Yano |
ICCE | 2 |
| 2011 | PACALL: Passive Capture for Ubiquitous Learning Log Using SenseCam
Bin Hou, Hiroaki Ogata, Toma Kunita, Noriko Uosaki, Yoneo Yano |
ICCE | 2 |
| 2011 | Personalization and Context-awareness Supporting Ubiquitous Learning Log SystemabstractThis study primarily exploits a context-awareness and personalization model supporting ubiquitous learning log system. Learning log stands for the log of knowledge or learning experience acquired ubiquitously. The model has three main behaviors, which are to recommend learning objects in accordance with both learners’ needs and contexts, to detect their learning styles using the context history and to prompt them to review what they have learned regarding their learning styles. What’s more, by monitoring learners’ reaction on the recommendation or prompting, the model can improve its prediction. Hiroaki Ogata, Bin Hou, Noriko Uosaki, Yoneo Yano |
ICCE | 2 |
| 2011 | Recalling Learning Log Based on Learning Style and Context
Hiroaki Ogata, Bin Hou, Noriko Uosaki, Yoneo Yano |
ICCE | 2 |
| 2011 | Development of Personalized and Context-aware Model in Learning Log System
Hiroaki Ogata, Bin Hou, Noriko Uosaki, Yoneo Yano |
ICCE | 2 |
| 2011 | Effectiveness of Ubiquitous Learning Log System
Hiroaki Ogata, Bin Hou, Noriko Uosaki, Yoneo Yano |
ICCE | 1 |
| 2011 | Integrating Electroencephalogram Analysis for Improving Mental Condition in Physical Skill Learning
Soichiro Takaiwa, Kenji Matsuura, Naka Gotoda, Hiroaki Ogata, Kazuhide Kanenishi, Hiroki Moriguchi, Yoneo Yano |
ICCE | 4 |
| 2011 | Seeking for Seamless Language Learning: How can we entwine formal learning with informal learning?
Noriko Uosaki, Hiroaki Ogata, Taro Sugimoto, Bin Hou, Yoneo Yano |
ICCE | 2 |
| 2011 | Supporting English Class using Mobile Devices: How Can We Intertwine In-class Learning with Out-class Learning?
Noriko Uosaki, Hiroaki Ogata, Taro Sugimoto, Bin Hou, Yoneo Yano |
ICCE | 2 |
| 2011 | Supporting English Course with Mobile Devices: How Can We Learn Vocabulary Seamlessly?
Noriko Uosaki, Hiroaki Ogata, Taro Sugimoto, Bin Hou, Yoneo Yano |
ICCE | 2 |
| 2011 | Designing the Web-Community for Self-managed Training of Runners
Shinji Otsuka, Kenji Matsuura, Naka Gotoda, Toshio Tanaka, Kazuhide Kanenishi, Hiroaki Ogata, Yoneo Yano |
KES (3) | 6 |
| 2010 | Ubiquitous Learning Log: What if we can log our ubiquitous learning?abstractThis paper proposes a ubiquitous learning log system called SCROLL (System for Capturing and Reminding Of Learning Log). Ubiquitous Learning Log (ULL) is defined as a digital record of what you have learned in the daily life using ubiquitous technologies. It allows you to log your learning experiences with photos, audios, videos, location, QR-code, RFID tag, and sensor data, and to share and to reuse ULL with others. Using SCROLL, you can receive personalized quizzes and answers for your questions. Also, you can navigate and be aware of your past ULLs supported by augmented reality view. The initial evaluation of applying this system in an undergraduate English course is illustrated. Hiroaki Ogata, Bin Hou, Noriko Uosaki, Moushir M. El-Bishouty, Yoneo Yano |
ICCE | 1 |
| 2010 | Seamless Vocabulary Learning in English Course Using Mobile Devices
Noriko Uosaki, Bin Hou, Hiroaki Ogata, Yoneo Yano |
ICCE | 4 |
| 2010 | Seamless Learning Environment to Support English Course Using Smartphones
Noriko Uosaki, Bin Hou, Hiroaki Ogata, Yoneo Yano |
ICCE | 4 |
| 2010 | Supporting an English Course Using Handhelds in a Seamless Learning Environment
Noriko Uosaki, Bin Hou, Hiroaki Ogata, Yoneo Yano |
ICCE | 4 |
| 2010 | Supporting Awareness of Learning Partners for Mobile Language LearningabstractThis paper proposes a Social Networking Service site based mobile environment for learning foreign languages called SONLEM, which supports learners to find a partner who can solve the language learning problems at the online community, and an appropriate request chain of friends will be recommended upon their request. The learner can practice his second language with a native speaker who is learning his language. Chengjiu Yin, Yoshiyuki Tabata, Hiroaki Ogata, Yoneo Yano |
ICCE | 3 |
| 2010 | Social Networking Based on Language Exchange Site in Mobile Learning Environment
Chengjiu Yin, Yoshiyuki Tabata, Hiroaki Ogata, Yoneo Yano |
ICCE | 3 |
| 2008 | A Model of Personalized Collaborative Computer Support Ubiquitous Learning EnvironmentabstractSearching for knowledge is an essential problem that learners face while learning. In a ubiquitous learning environment, it is difficult for a learner to find the right knowledge in time even if the source of this knowledge is very near to his physical location. Therefore, this paper presents a personalized collaborative ubiquitous learning environment in order to support the learner while doing a task. It allows the learners to share knowledge, interact, collaborate, and exchange individual experiences. This environment is called PERKAM. It utilizes the ubiquitous technologies to recommend the educational materials and the peer helpers according to the learnerpsilas current task and location. This paper focuses on the user model and the recommendation methodology. Moushir M. El-Bishouty, Hiroaki Ogata, Yoneo Yano |
ICALT | 2 |
| 2008 | Supporting Task Assignments for Language Learning Outside Classroom with HandheldsabstractThe existence of wireless and mobile technology has provided opportunities to support learning regardless of the physical learning space. Thus for example, usage of mobile terminals such as smart PDA (personal digital assistant) in a learning system is very common phenomenon. Mobile devices can communicate with wireless mobile terminal and realize the intelligence exchange with its surroundings. Based on this current trend and the need to realize learning in a more dynamic environment, a LOCH (Language Learning Outside the Classroom) system named One Day Trip is developed to assist overseas students to learn Japanese in real life situations with the help of a PDA. This paper proposes the task assignment support function in the system to aid the teacher to give learners appropriate tasks in the learning environment. Hiroaki Ogata, Li Hui Gan, Makoto Wada, Yoneo Yano |
ICALT | 1 |
| 2007 | Detection, Recommendation and Collaboration: Knowledge Awareness Map in Computer Supported Ubiquitous Learning
Moushir M. El-Bishouty, Hiroaki Ogata, Yoneo Yano |
ICCE | 2 |
| 2007 | Language Learning Outside the Classroom Using Handhelds with Knowledge Management
Li Hui Gan, Hiroaki Ogata, Makoto Wada, Yasuko Oishi, Takahito Ueda, Yoneo Yano |
ICCE | 2 |
| 2007 | Computer Supported Ubiquitous Learning Environment for Japanese Mimicry and Onomatopoeia with Sensors
Hiroaki Ogata, Tomoo Kondo, Chengjiu Yin, Yoneo Yano |
ICCE | 1 |
| 2007 | LORAMS: Linking Physical Objects and Videos for Ubiquitous Learning
Hiroaki Ogata, Yoshiki Matsuka, Moushir M. El-Bishouty, Yoneo Yano |
ICCE | 1 |
| 2007 | Supporting Awareness in Real-Time Distance Learning with a Real-World Avatar
Hiroaki Ogata, Kazuya Terai, Takaaki Shinto, Wataru Bando, Yoneo Yano |
ICCE | 1 |
| 2007 | JAPELAS2: Japanese Polite Expressions Learning Assisting System in Ubiquitous Environments
Chengjiu Yin, Hiroaki Ogata, Yoneo Yano |
ICCE | 2 |
| 2006 | Knowledge Awareness Map in Mobile Language-LearningabstractThe challenge in an information-rich world is not only to make information available to people at any time, at any place, and in any form, but specifically to say the right thing at the right time in the right way[1]. A ubiquitous and mobile computing environment enables people to learn at any time and any place. Nevertheless, the fundamental issue is how to provide learners with the right information at the right time in the right way. This paper tackles the issues of right time and right place learning (RTRPL) in a ubiquitous computing environment. Hiroaki Ogata, Moushir M. El-Bishouty, Yoneo Yano |
ICALT | 1 |
| 2006 | Supporting Mobile Language Learning outside ClassroomsabstractThe continuous development of wireless and mobile technologies has allowed the creation of an additional platform for supporting learning, one that can be embedded in the same physical space in which the learning is taking place. This paper describes a computer supported ubiquitous learning environment for language learning, called LOCH (Languagelearning Outside the Classroom with Handhelds). In the environment, the teacher assigns field activities to the students, who go around the town to fulfill them and share their individual experiences. The main aim of this project, called One Day Trip with PDA, was to integrate the knowledge acquired in the classroom and the real needs of the students in their daily life. Hiroaki Ogata, Chengjiu Yin, Rosa G. J. Paredes, Nobuji A. Saito, Yoneo Yano, Yasuko Oishi, Takahito Ueda |
ICALT | 1 |
| 2006 | PSSLSA: Participatory Simulation System for Learning Sorting AlgorithmsabstractDuring learning computer science theory, it is essential to learn sorting algorithms, but it is not easy to understand the concept of the different sorting algorithms. This paper describes a system called PSSLSA (PDA-based Participatory Simulation System for Learning Sorting Algorithms). This is an interactive simulation system to learn the sorting algorithms. Learners use it to deeply understand the sorting algorithms. Using this system, the teacher can assign tasks to his student and ask them to sort a list of numbers according to a certain algorithm. Learners receive these tasks, collaborate together and send the result to the server. The system will check it and feedback the student with the positions of the numbers if there is a mistake. The learners will correct the number positions and send it back to the server. Learners can understand the algorithm through the dissections and their errors. Chengjiu Yin, Hiroaki Ogata, Tomonobu Sasada, Yoneo Yano |
ICALT | 2 |
| 2005 | A Three-dimensional Context-awareness Model: Support Learning Services Providing in e-Learning Environments
Yanlin Zheng, Hiroaki Ogata, Yoneo Yano |
ICCE | 3 |
| 2004 | Using Knowledge Awareness Support Learning Services Providing in e-Learning EnvironmentabstractThe distribution of all kinds of resources in e-learning environment requires more conscious learning services for learner's personal or collaborative learning. Satisfying personalized needs on knowledge contents and recommending the most potential knowledge collaborators for effective collaboration are regarded as the two most significant learning services. This paper proposes to use Knowledge Awareness (KA) to support learning services providing focused on Personalization and Collaboration in e-learning space. This paper presents a three-dimensional KA model, illustrates a KA-supported learning services providing mechanism, and also provides a simple case study. Yanlin Zheng, Hiroaki Ogata, Yoneo Yano |
Web Intelligence | 2 |
| 2002 | Real/Virtual Classmates in an Asynchronous Distant Learning EnvironmentabstractOnline real/virtual classrooms/schools will play a more important role in the society of the future. Especially, an anytime/anywhere learning environment, which allows learners to participate in a classroom via networks, is one of the most focused theme of this research field. In such a trend of these networked learning environments, the authors have already proposed a new concept for the asynchronous virtual classroom that combines online learning materials with both asynchronous communication tools and software agents. The software agents, which are simulated classmates in a classroom situation, act for real learners by means of utilizing past activities of past learners. In addition to such agents' behavior as semi-real classmates, they could be configured as purely virtual classmates by a lecturer, too. Now that they reconsidered and reconfigured a flexible architecture for software agents, this paper reports its basic design and an application for agent-based classmates in asynchronous learning scenario. Kenji Matsuura, Friedrich W. Hesse, Youji Ochi, Hiroaki Ogata, Yoneo Yano |
ICCE | 4 |
| 2001 | XML-Based Video Annotation System for Language Learning EnvironmentabstractWe focus on an XML-based video annotation system for language learning using a videoconference system. The environment supports the native speaker as teacher and non-native learner. We extend the videoconference system so the system can record the learning scene as a video file. The learning scene recorded in the videoconference system can be used for instruction. For instance, the teacher can explain by inserting feedback as annotation in the scene. If a teacher edits the video for explanation, it is very useful as a teaching material. However, an ordinal video editing system creates quite a new video file so it cannot change the contents for playback. In addition, the learner can hardly grasp the teacher's task. Therefore, we propose a video correction and VCML (Video-based Correction Markup Language) based on XML to represent corrected information. We call the prototype Viclle (Video-based Communicative Language Learning System). With the system, both teacher and learner can communicate via e-mail without sending video files. In addition, video correction resembles retrieving information from a database with keywords. Therefore, Viclle is regarded as an error database. Yoshiaki Hada, Hiroaki Ogata, Yoneo Yano |
WISE (1) | 2 |
| 2001 | Computer Supported Social Networking For Augmenting Cooperation
Hiroaki Ogata, Yoneo Yano, Nobuko Furugori, Qun Jin |
Comput. Support. Cooperative Work. | 1 |
| 2000 | Agent's Contribution for an Asynchronous Virtual Classroom
Kenji Matsuura, Hiroaki Ogata, Yoneo Yano |
Intelligent Tutoring Systems | 2 |
| 2000 | Agent-Mediated Language-Learning Environment Based on Communicative Gaps
Hiroaki Ogata, Youji Ochi, Yoneo Yano |
Intelligent Tutoring Systems | 1 |
| 1999 | TVOO: A Temporal Versioned Object-Oriented Data Model
L. Rodríguez, Hiroaki Ogata, Yoneo Yano |
Inf. Sci. | 2 |