Unggi Lee

dblp:327/6756 · DBLP profile ↗
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6ranked-venue papers
5as first author
6since 2021 · last 2025
0000-0002-0883-4128ORCID · verified

Domains — the database's venue-derived domains; a paper can count in several

Human-computer interaction and ubiquitous computing · 4 · 3 first-author · 4 since 2021Applied, interdisciplinary, general and emerging computing · 4 · 3 first-author · 4 since 2021Artificial intelligence and machine learning · 2 · 2 first-author · 2 since 2021Databases, data management, data science and information retrieval · 1 · 1 first-author · 1 since 2021
YearPublicationVenuePosition
2025 Pedagogy-R1: Pedagogical Large Reasoning Model and Well-balanced Educational Benchmark
abstract
Recent advances in large reasoning models (LRMs) have demonstrated impressive capabilities in highly structured domains such as mathematics and programming. However, their application to education-where effective reasoning must be pedagogically meaningful, context-sensitive, and responsive to real student needs-remains relatively unexplored. Existing large language models (LLMs) often struggle to deliver instructional coherence, formative feedback, or simulate sophisticated teacher decision-making, limiting their practical utility in educational settings. To fill this gap, we present Pedagogy-R1, a comprehensive pedagogical reasoning framework designed to adapt LLMs for authentic classroom tasks. Our approach features three key innovations: (1) a distillation-based training pipeline that uses pedagogically filtered outputs for instruction tuning, (2) the Well-balanced Educational Benchmark (WBEB), which systematically evaluates models across five dimensions-subject knowledge, pedagogical knowledge, knowledge tracing, essay scoring, and real-world teacher decision-making-and (3) the Chain-of-Pedagogy (CoP) prompting strategy, employed both to generate pedagogically enriched training data and to elicit teacher-like reasoning during inference. We conduct a mixed-methods evaluation, combining fine-grained quantitative analyses of model performance with qualitative insights into the model's pedagogical reasoning patterns.
Unggi Lee, Jiyeong Bae, Yeil Jeong, Junbo Koh, Gyeonggeon Lee, Gunho Lee, Taekyung Ahn, Hyeoncheol Kim
CIKM1
2025 ES-KT-24: A Multimodal Knowledge Tracing Benchmark Dataset with Educational Game Playing Video and Synthetic Text Generation
Unggi Lee, Sookbun Lee, Jiyeong Bae, Taekyung Ahn, Jaekwon Park, Gunho Lee, Hyeoncheol Kim
ITS (2)2
2025 Echo-Teddy: Preliminary Design and Development of Large Language Model-Based Social Robot for Autistic Students
Unggi Lee, Hansung Kim 0002, Juhong Eom, Hyeonseo Jeong, Gyuri Byun, Yunseo Lee, Minji Kang, Gospel Kim, Jihoi Na, Jewoong Moon, Hyeoncheol Kim
ITS (2)1
2025 LLaVA-Docent-V2: Improving Data Quality and Pedagogical Data Generation to Train Large Multimodal Models for Art Appreciation Education
Unggi Lee, Yoorim Son, Jaeyoon Shin, Gyuri Byun, Yunseo Lee, Junbo Koh, Minji Jeon, Hyeoncheol Kim
ITS (2)1
2024 Difficulty-Focused Contrastive Learning for Knowledge Tracing with a Large Language Model-Based Difficulty Prediction
abstract
This paper presents novel techniques for enhancing the performance of knowledge tracing (KT) models by focusing on the crucial factor of question and concept difficulty level. Despite the acknowledged significance of difficulty, previous KT research has yet to exploit its potential for model optimization and has struggled to predict difficulty from unseen data. To address these problems, we propose a difficulty-centered contrastive learning method for KT models and a Large Language Model (LLM)-based framework for difficulty prediction. These innovative methods seek to improve the performance of KT models and provide accurate difficulty estimates for unseen data. Our ablation study demonstrates the efficacy of these techniques by demonstrating enhanced KT model performance. Nonetheless, the complex relationship between language and difficulty merits further investigation.
Unggi Lee, Sungjun Yoon, Joon Seo Yun, Kyoungsoo Park, Younghoon Jung, Damji Stratton, Hyeoncheol Kim
LREC/COLING1
2024 MonaCoBERT: Monotonic Attention Based ConvBERT for Knowledge Tracing
Unggi Lee, Yujin Kim 0001, Seongyune Choi, Hyeoncheol Kim
ITS (2)1