VLDB 2026 Research / reviewers in the wild / expert
Dafna Shahaf
dblp:02/2672
· DBLP profile ↗
40ranked-venue papers
13as first author
14since 2021 · last 2026
0000-0003-3261-0818ORCID · corroborated
Domains — the database's venue-derived domains; a paper can count in several
Artificial intelligence and machine learning · 31 · 11 first-author · 11 since 2021Databases, data management, data science and information retrieval · 15 · 6 first-author · 1 since 2021Graphics, computer vision, multimedia, augmented reality and games · 10 · 7 first-author · 2 since 2021Human-computer interaction and ubiquitous computing · 4 · 2 since 2021Applied, interdisciplinary, general and emerging computing · 2 · 1 first-author · 1 since 2021Computer networks · 1
| Year | Publication | Venue | Position |
|---|---|---|---|
| 2026 | 🧑🍳 Cooking Up Creativity : Enhancing LLM Creativity through Structured RecombinationabstractAbstract Large Language Models (LLMs) excel at many tasks, yet they struggle to produce truly creative, diverse ideas. In this paper, we introduce a novel approach that enhances LLM creativity. We apply LLMs for translating between natural language and structured representations, and perform the core creative leap via cognitively inspired manipulations on these representations. Our notion of creativity goes beyond superficial token-level variations; rather, we recombine structured representations of existing ideas, enabling our system to effectively explore a more abstract landscape of ideas. We demonstrate our approach in the culinary domain with DishCover, a model that generates creative recipes. Experiments and domain-expert evaluations reveal that our outputs, which are mostly coherent and feasible, significantly surpass GPT-4o in terms of novelty and diversity, thus outperforming it in creative generation. We hope our work inspires further research into structured creativity in AI. Moran Mizrahi 0001, Chen Shani, Gabriel Stanovsky, Daniel Jurafsky, Dafna Shahaf |
Trans. Assoc. Comput. Linguistics | 5 |
| 2025 | Finding your MUSE: Mining Unexpected Solutions EngineabstractInnovators often exhibit cognitive fixation on existing solutions or nascent ideas, hindering the exploration of novel alternatives.This paper introduces a methodology for constructing Functional Concept Graphs (FCGs), interconnected representations of functional elements that support abstraction, problem reframing, and analogical inspiration.Our approach yields large-scale, high-quality FCGs with explicit abstraction relations, overcoming limitations of prior work.We further present MUSE, an algorithm leveraging FCGs to generate creative inspirations for a given problem.We demonstrate our method by computing an FCG on 500K patents, which we release for further research.A user study indicates that participants exposed to MUSE's inspirations generated more creative ideas, both in terms of absolute number (up to 19% increase over participants not given inspirations) and ratio (75%, compared to 49% for no inspirations). Nir Sweed, Hanit Hakim, Ben Wolfson, Hila Lifshitz, Dafna Shahaf |
EMNLP | 5 |
| 2024 | Imitation of Life: A Search Engine for Biologically Inspired DesignabstractBiologically Inspired Design (BID), or Biomimicry, is a problem-solving methodology that applies analogies from nature to solve engineering challenges. For example, Speedo engineers designed swimsuits based on shark skin. Finding relevant biological solutions for real-world problems poses significant challenges, both due to the limited biological knowledge engineers and designers typically possess and to the limited BID resources. Existing BID datasets are hand-curated and small, and scaling them up requires costly human annotations. In this paper, we introduce BARcode (Biological Analogy Retriever), a search engine for automatically mining bio-inspirations from the web at scale. Using advances in natural language understanding and data programming, BARcode identifies potential inspirations for engineering challenges. Our experiments demonstrate that BARcode can retrieve inspirations that are valuable to engineers and designers tackling real-world problems, as well as recover famous historical BID examples. We release data and code; we view BARcode as a step towards addressing the challenges that have historically hindered the practical application of BID to engineering innovation. Hen Emuna, Nadav Borenstein, Hyeonsu B. Kang, Joel Chan, Aniket Kittur, Dafna Shahaf |
AAAI | 7 |
| 2024 | ParallelPARC: A Scalable Pipeline for Generating Natural-Language AnalogiesabstractOren Sultan, Yonatan Bitton, Ron Yosef, Dafna Shahaf. Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers). 2024. Oren Sultan, Yonatan Bitton, Ron Yosef, Dafna Shahaf |
NAACL-HLT | 4 |
| 2024 | State of What Art? A Call for Multi-Prompt LLM EvaluationabstractAbstract Recent advances in LLMs have led to an abundance of evaluation benchmarks, which typically rely on a single instruction template per task. We create a large-scale collection of instruction paraphrases and comprehensively analyze the brittleness introduced by single-prompt evaluations across 6.5M instances, involving 20 different LLMs and 39 tasks from 3 benchmarks. We find that different instruction templates lead to very different performance, both absolute and relative. Instead, we propose a set of diverse metrics on multiple instruction paraphrases, specifically tailored for different use cases (e.g., LLM vs. downstream development), ensuring a more reliable and meaningful assessment of LLM capabilities. We show that our metrics provide new insights into the strengths and limitations of current LLMs. Moran Mizrahi 0001, Guy Kaplan, Dan Malkin, Rotem Dror, Dafna Shahaf, Gabriel Stanovsky |
Trans. Assoc. Comput. Linguistics | 5 |
| 2023 | VASR: Visual Analogies of Situation RecognitionabstractA core process in human cognition is analogical mapping: the ability to identify a similar relational structure between different situations. We introduce a novel task, Visual Analogies of Situation Recognition, adapting the classical word-analogy task into the visual domain. Given a triplet of images, the task is to select an image candidate B' that completes the analogy (A to A' is like B to what?). Unlike previous work on visual analogy that focused on simple image transformations, we tackle complex analogies requiring understanding of scenes. We leverage situation recognition annotations and the CLIP model to generate a large set of 500k candidate analogies. Crowdsourced annotations for a sample of the data indicate that humans agree with the dataset label ~80% of the time (chance level 25%). Furthermore, we use human annotations to create a gold-standard dataset of 3,820 validated analogies. Our experiments demonstrate that state-of-the-art models do well when distractors are chosen randomly (~86%), but struggle with carefully chosen distractors (~53%, compared to 90% human accuracy). We hope our dataset will encourage the development of new analogy-making models. Website: https://vasr-dataset.github.io/ Yonatan Bitton, Ron Yosef, Eli Strugo, Dafna Shahaf, Roy Schwartz 0001, Gabriel Stanovsky |
AAAI | 4 |
| 2023 | FAME: Flexible, Scalable Analogy Mappings EngineabstractAnalogy is one of the core capacities of human cognition; when faced with new situations, we often transfer prior experience from other domains.Most work on computational analogy relies heavily on complex, manually crafted input.In this work, we relax the input requirements, requiring only names of entities to be mapped.We automatically extract commonsense representations and use them to identify a mapping between the entities.Unlike previous works, our framework can handle partial analogies and suggest new entities to be added.Moreover, our method's output is easily interpretable, allowing for users to understand why a specific mapping was chosen.Experiments show that our model correctly maps 81.2% of classical 2x2 analogy problems (guess level=50%).On larger problems, it achieves 77.8% accuracy (mean guess level=13.1%).In another experiment, we show our algorithm outperforms human performance, and the automatic suggestions of new entities resemble those suggested by humans.We hope this work will advance computational analogy by paving the way to more flexible, realistic input requirements, with broader applicability. Shahar Jacob, Chen Shani, Dafna Shahaf |
EMNLP | 3 |
| 2023 | The value of parental medical records for the prediction of diabetes and cardiovascular disease: a novel method for generating and incorporating family historiesabstractOBJECTIVE: To determine whether data-driven family histories (DDFH) derived from linked EHRs of patients and their parents can improve prediction of patients' 10-year risk of diabetes and atherosclerotic cardiovascular disease (ASCVD). MATERIALS AND METHODS: A retrospective cohort study using data from Israel's largest healthcare organization. A random sample of 200 000 subjects aged 40-60 years on the index date (January 1, 2010) was included. Subjects with insufficient history (<1 year) or insufficient follow-up (<10 years) were excluded. Two separate XGBoost models were developed-1 for diabetes and 1 for ASCVD-to predict the 10-year risk for each outcome based on data available prior to the index date of January 1, 2010. RESULTS: Overall, the study included 110 734 subject-father-mother triplets. There were 22 153 cases of diabetes (20%) and 11 715 cases of ASCVD (10.6%). The addition of parental information significantly improved prediction of diabetes risk (P < .001), but not ASCVD risk. For both outcomes, maternal medical history was more predictive than paternal medical history. A binary variable summarizing parental disease state delivered similar predictive results to the full parental EHR. DISCUSSION: The increasing availability of EHRs for multiple family generations makes DDFH possible and can assist in delivering more personalized and precise medicine to patients. Consent frameworks must be established to enable sharing of information across generations, and the results suggest that sharing the full records may not be necessary. CONCLUSION: DDFH can address limitations of patient self-reported family history, and it improves clinical predictions for some conditions, but not for all, and particularly among younger adults. Yuval Barak-Corren, David Tsurel, Daphna Keidar, Ilan Gofer, Dafna Shahaf, Maya Leventer-Roberts, Noam Barda, Ben Y. Reis |
J. Am. Medical Informatics Assoc. | 5 |
| 2022 | Scaling Creative Inspiration with Fine-Grained Functional Aspects of IdeasabstractLarge repositories of products, patents and scientific papers offer an opportunity for building systems that scour millions of ideas and help users discover inspirations. However, idea descriptions are typically in the form of unstructured text, lacking key structure that is required for supporting creative innovation interactions. Prior work has explored idea representations that were either limited in expressivity, required significant manual effort from users, or dependent on curated knowledge bases with poor coverage. We explore a novel representation that automatically breaks up products into fine-grained functional aspects capturing the purposes and mechanisms of ideas, and use it to support important creative innovation interactions: functional search for ideas, and exploration of the design space around a focal problem by viewing related problem perspectives pooled from across many products. In user studies, our approach boosts the quality of creative search and inspirations, substantially outperforming strong baselines by 50-60%. Tom Hope, Ronen Tamari, Daniel Hershcovich, Hyeonsu B. Kang, Joel Chan, Aniket Kittur, Dafna Shahaf |
CHI | 7 |
| 2022 | Breakpoint Transformers for Modeling and Tracking Intermediate BeliefsabstractCan we teach natural language understanding models to track their beliefs through intermediate points in text?We propose a representation learning framework called breakpoint modeling that allows for learning of this type.Given any text encoder and data marked with intermediate states (breakpoints) along with corresponding textual queries viewed as true/false propositions (i.e., the candidate beliefs of a model, consisting of information changing through time) our approach trains models in an efficient and end-to-end fashion to build intermediate representations that facilitate teaching and direct querying of beliefs at arbitrary points alongside solving other end tasks.To show the benefit of our approach, we experiment with a diverse set of NLU tasks including relational reasoning on CLUTRR and narrative understanding on bAbI.Using novel belief prediction tasks for both tasks, we show the benefit of our main breakpoint transformer, based on T5, over conventional representation learning approaches in terms of processing efficiency, prediction accuracy and prediction consistency, all with minimal to no effect on corresponding QA endtasks.To show the feasibility of incorporating our belief tracker into more complex reasoning pipelines, we also obtain SOTA performance on the three-tiered reasoning challenge for the TRIP benchmark (around 23-32% absolute improvement on Tasks 2-3). 1 Kyle Richardson 0001, Ronen Tamari, Oren Sultan, Dafna Shahaf, Reut Tsarfaty, Ashish Sabharwal |
EMNLP | 4 |
| 2022 | Life is a Circus and We are the Clowns: Automatically Finding Analogies between Situations and ProcessesabstractAnalogy-making gives rise to reasoning, abstraction, flexible categorization and counterfactual inference -abilities lacking in even the best AI systems today.Much research has suggested that analogies are key to non-brittle systems that can adapt to new domains.Despite their importance, analogies received little attention in the NLP community, with most research focusing on simple word analogies.Work that tackled more complex analogies relied heavily on manually constructed, hard-to-scale input representations.In this work, we explore a more realistic, challenging setup: our input is a pair of natural language procedural texts, describing a situation or a process (e.g., how the heart works/how a pump works).Our goal is to automatically extract entities and their relations from the text and find a mapping between the different domains based on relational similarity (e.g., blood is mapped to water).We develop an interpretable, scalable algorithm and demonstrate that it identifies the correct mappings 87% of the time for procedural texts and 94% for stories from cognitive-psychology literature.We show it can extract analogies from a large dataset of procedural texts, achieving 79% precision (analogy prevalence in data: 3%).Lastly, we demonstrate that our algorithm is robust to paraphrasing the input texts 1 . Oren Sultan, Dafna Shahaf |
EMNLP | 2 |
| 2022 | Augmenting Scientific Creativity with an Analogical Search EngineabstractAnalogies have been central to creative problem-solving throughout the history of science and technology. As the number of scientific articles continues to increase exponentially, there is a growing opportunity for finding diverse solutions to existing problems. However, realizing this potential requires the development of a means for searching through a large corpus that goes beyond surface matches and simple keywords. Here we contribute the first end-to-end system for analogical search on scientific articles and evaluate its effectiveness with scientists’ own problems. Using a human-in-the-loop AI system as a probe we find that our system facilitates creative ideation, and that ideation success is mediated by an intermediate level of matching on the problem abstraction (i.e., high versus low). We also demonstrate a fully automated AI search engine that achieves a similar accuracy with the human-in-the-loop system. We conclude with design implications for enabling automated analogical inspiration engines to accelerate scientific innovation. Hyeonsu B. Kang, Tom Hope, Dafna Shahaf, Joel Chan, Aniket Kittur |
ACM Trans. Comput. Hum. Interact. | 4 |
| 2021 | How Did This Get Funded?! Automatically Identifying Quirky Scientific AchievementsabstractChen Shani, Nadav Borenstein, Dafna Shahaf. Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers). 2021. Chen Shani, Nadav Borenstein, Dafna Shahaf |
ACL/IJCNLP (1) | 3 |
| 2021 | 50 Ways to Bake a Cookie: Mapping the Landscape of Procedural TextsabstractThe web is full of guidance on a wide variety of tasks, from changing the oil in your car to baking an apple pie. However, as content is created independently, a single task could have thousands of corresponding procedural texts. This makes it difficult for users to view the bigger picture and understand the multiple ways the task could be accomplished. In this work we propose an unsupervised learning approach for summarizing multiple procedural texts into an intuitive graph representation, allowing users to easily explore commonalities and differences. We demonstrate our approach on recipes, a prominent example of procedural texts. User studies show that our representation is intuitive and coherent and that it has the potential to help users with several sensemaking tasks, including adapting recipes for a novice cook and finding creative ways to spice up a dish. Moran Mizrahi 0001, Dafna Shahaf |
CIKM | 2 |
| 2020 | Language (Re)modelling: Towards Embodied Language UnderstandingabstractWhile natural language understanding (NLU) is advancing rapidly, today's technology differs from human-like language understanding in fundamental ways, notably in its inferior efficiency, interpretability, and generalization.This work proposes an approach to representation and learning based on the tenets of embodied cognitive linguistics (ECL).According to ECL, natural language is inherently executable (like programming languages), driven by mental simulation and metaphoric mappings over hierarchical compositions of structures and schemata learned through embodied interaction.This position paper argues that the use of grounding by metaphoric inference and simulation will greatly benefit NLU systems, and proposes a system architecture along with a roadmap towards realizing this vision. Ronen Tamari, Chen Shani, Tom Hope, Miriam R. L. Petruck, Omri Abend, Dafna Shahaf |
ACL | 6 |
| 2020 | E-Commerce Dispute Resolution PredictionabstractE-Commerce marketplaces support millions of daily transactions, and some disagreements between buyers and sellers are unavoidable. Resolving disputes in an accurate, fast, and fair manner is of great importance for maintaining a trustworthy platform. Simple cases can be automated, but intricate cases are not sufficiently addressed by hard-coded rules, and therefore most disputes are currently resolved by people. In this work we take a first step towards automatically assisting human agents in dispute resolution at scale. We construct a large dataset of disputes from the eBay online marketplace, and identify several interesting behavioral and linguistic patterns. We then train classifiers to predict dispute outcomes with high accuracy. We explore the model and the dataset, reporting interesting correlations, important features, and insights. David Tsurel, Michael Doron, Alexander Nus, Arnon Dagan, Ido Guy, Dafna Shahaf |
CIKM | 6 |
| 2019 | Discovering Unexpected Local Nonlinear Interactions in Scientific Black-box ModelsabstractScientific computational models are crucial for analyzing and understanding complex real-life systems that are otherwise difficult for experimentation. However, the complex behavior and the vast input-output space of these models often make them opaque, slowing the discovery of novel phenomena. In this work, we present HINT (Hessian INTerestingness) -- a new algorithm that can automatically and systematically explore black-box models and highlight local nonlinear interactions in the input-output space of the model. This tool aims to facilitate the discovery of interesting model behaviors that are unknown to the researchers. Using this simple yet powerful tool, we were able to correctly rank all pairwise interactions in known benchmark models and do so faster and with greater accuracy than state-of-the-art methods. We further applied HINT to existing computational neuroscience models, and were able to reproduce important scientific discoveries that were published years after the creation of those models. Finally, we ran HINT on two real-world models (in neuroscience and earth science) and found new behaviors of the model that were of value to domain experts. Michael Doron, Idan Segev, Dafna Shahaf |
KDD | 3 |
| 2019 | Addendum to the Special Issue on Interactive Data Exploration and Analytics (TKDD, Vol. 12 Iss. 1)abstractNo abstract available. Matthijs van Leeuwen, Polo Chau, Jilles Vreeken, Dafna Shahaf, Christos Faloutsos |
ACM Trans. Knowl. Discov. Data | 4 |
| 2018 | Analogy Mining for Specific Design NeedsabstractFinding analogical inspirations in distant domains is a powerful way of solving problems. However, as the number of inspirations that could be matched and the dimensions on which that matching could occur grow, it becomes challenging for designers to find inspirations relevant to their needs. Furthermore, designers are often interested in exploring specific aspects of a product-- for example, one designer might be interested in improving the brewing capability of an outdoor coffee maker, while another might wish to optimize for portability. In this paper we introduce a novel system for targeting analogical search for specific needs. Specifically, we contribute an analogical search engine for expressing and abstracting specific design needs that returns more distant yet relevant inspirations than alternate approaches. Karni Gilon, Joel Chan, Felicia Y. Ng, Hila Lifshitz-Assaf, Aniket Kittur, Dafna Shahaf |
CHI | 6 |
| 2018 | Accelerating Innovation Through Analogy MiningabstractThe availability of large idea repositories (e.g., patents) could significantly accelerate innovation and discovery by providing people inspiration from solutions to analogous problems. However, finding useful analogies in these large, messy, real-world repositories remains a persistent challenge for both humans and computers. Previous approaches include costly hand-created databases that do not scale, or machine-learning similarity metrics that struggle to account for structural similarity, which is central to analogy. In this paper we explore the viability and value of learning simple structural representations. Our approach combines crowdsourcing and recurrent neural networks to extract purpose and mechanism vector representations from product descriptions. We demonstrate that these learned vectors allow us to find analogies with higher precision and recall than traditional methods. In an ideation experiment, analogies retrieved by our models significantly increased people's likelihood of generating creative ideas. Tom Hope, Joel Chan, Aniket Kittur, Dafna Shahaf |
IJCAI | 4 |
| 2018 | Ballpark Crowdsourcing: The Wisdom of Rough Group ComparisonsabstractCrowdsourcing has become a popular method for collecting labeled training data. However, in many practical scenarios traditional labeling can be difficult for crowdworkers(for example, if the data is high-dimensional or unintuitive, or the labels are continuous). Tom Hope, Dafna Shahaf |
WSDM | 2 |
| 2018 | SOLVENT: A Mixed Initiative System for Finding Analogies between Research PapersabstractScientific discoveries are often driven by finding analogies in distant domains, but the growing number of papers makes it difficult to find relevant ideas in a single discipline, let alone distant analogies in other domains. To provide computational support for finding analogies across domains, we introduce SOLVENT, a mixed-initiative system where humans annotate aspects of research papers that denote their background (the high-level problems being addressed), purpose (the specific problems being addressed), mechanism (how they achieved their purpose), and findings (what they learned/achieved), and a computational model constructs a semantic representation from these annotations that can be used to find analogies among the research papers. We demonstrate that this system finds more analogies than baseline information-retrieval approaches; that annotators and annotations can generalize beyond domain; and that the resulting analogies found are useful to experts. These results demonstrate a novel path towards computationally supported knowledge sharing in research communities. Joel Chan, Joseph Chee Chang, Tom Hope, Dafna Shahaf, Aniket Kittur |
Proc. ACM Hum. Comput. Interact. | 4 |
| 2017 | Learning to RouteabstractRecently, much attention has been devoted to the question of whether/when traditional network protocol design, which relies on the application of algorithmic insights by human experts, can be replaced by a data-driven (i.e., machine learning) approach. We explore this question in the context of the arguably most fundamental networking task: routing. Can ideas and techniques from machine learning (ML) be leveraged to automatically generate "good" routing configurations? We focus on the classical setting of intradomain traffic engineering. We observe that this context poses significant challenges for data-driven protocol design. Our preliminary results regarding the power of data-driven routing suggest that applying ML (specifically, deep reinforcement learning) to this context yields high performance and is a promising direction for further research. We outline a research agenda for ML-guided routing. Asaf Valadarsky, Michael Schapira, Dafna Shahaf, Aviv Tamar |
HotNets | 3 |
| 2017 | Accelerating Innovation Through Analogy MiningabstractThe availability of large idea repositories (e.g., the U.S. patent database) could significantly accelerate innovation and discovery by providing people with inspiration from solutions to analogous problems. However, finding useful analogies in these large, messy, real-world repositories remains a persistent challenge for either human or automated methods. Previous approaches include costly hand-created databases that have high relational structure (e.g., predicate calculus representations) but are very sparse. Simpler machine-learning/information-retrieval similarity metrics can scale to large, natural-language datasets, but struggle to account for structural similarity, which is central to analogy. In this paper we explore the viability and value of learning simpler structural representations, specifically, "problem schemas", which specify the purpose of a product and the mechanisms by which it achieves that purpose. Our approach combines crowdsourcing and recurrent neural networks to extract purpose and mechanism vector representations from product descriptions. We demonstrate that these learned vectors allow us to find analogies with higher precision and recall than traditional information-retrieval methods. In an ideation experiment, analogies retrieved by our models significantly increased people's likelihood of generating creative ideas compared to analogies retrieved by traditional methods. Our results suggest a promising approach to enabling computational analogy at scale is to learn and leverage weaker structural representations. Tom Hope, Joel Chan, Aniket Kittur, Dafna Shahaf |
KDD | 4 |
| 2017 | Fun Facts: Automatic Trivia Fact Extraction from WikipediaabstractA significant portion of web search queries directly refers to named entities. Search engines explore various ways to improve the user experience for such queries. We suggest augmenting search results with trivia facts about the searched entity. Trivia is widely played throughout the world, and was shown to increase users' engagement and retention. David Tsurel, Dan Pelleg, Ido Guy, Dafna Shahaf |
WSDM | 4 |
| 2016 | A Hard Look at Soft Concepts
Dafna Shahaf |
IJCAI | 1 |
| 2016 | Ballpark Learning: Estimating Labels from Rough Group Comparisons
Tom Hope, Dafna Shahaf |
ECML/PKDD (2) | 2 |
| 2015 | Inside Jokes: Identifying Humorous Cartoon CaptionsabstractHumor is an integral aspect of the human experience. Motivated by the prospect of creating computational models of humor, we study the influence of the language of cartoon captions on the perceived humorousness of the cartoons. Our studies are based on a large corpus of crowdsourced cartoon captions that were submitted to a contest hosted by the New Yorker. Having access to thousands of captions submitted for the same image allows us to analyze the breadth of responses of people to the same visual stimulus. Dafna Shahaf, Eric Horvitz, Robert Mankoff |
KDD | 1 |
| 2013 | Information cartography: creating zoomable, large-scale maps of informationabstractIn an era of information overload, many people struggle to make sense of complex stories, such as presidential elections or economic reforms. We propose a methodology for creating structured summaries of information, which we call zoomable metro maps. Just as cartographic maps have been relied upon for centuries to help us understand our surroundings, metro maps can help us understand the information landscape. Dafna Shahaf, Jaewon Yang, Caroline Suen, Jeff Jacobs, Heidi Wang, Jure Leskovec |
KDD | 1 |
| 2012 | Metro maps of scienceabstractAs the number of scientific publications soars, even the most enthusiastic reader can have trouble staying on top of the evolving literature. It is easy to focus on a narrow aspect of one's field and lose track of the big picture. Information overload is indeed a major challenge for scientists today, and is especially daunting for new investigators attempting to master a discipline and scientists who seek to cross disciplinary borders. In this paper, we propose metrics of influence, coverage and connectivity for scientific literature. We use these metrics to create structured summaries of information, which we call metro maps. Most importantly, metro maps explicitly show the relations between papers in a way which captures developments in the field. Pilot user studies demonstrate that our method helps researchers acquire new knowledge efficiently: map users achieved better precision and recall scores and found more seminal papers while performing fewer searches. Dafna Shahaf, Carlos Guestrin, Eric Horvitz |
KDD | 1 |
| 2012 | Trains of thought: generating information mapsabstractWhen information is abundant, it becomes increasingly difficult to fit nuggets of knowledge into a single coherent picture. Complex stories spaghetti into branches, side stories, and intertwining narratives. In order to explore these stories, one needs a map to navigate unfamiliar territory. We propose a methodology for creating structured summaries of information, which we call metro maps. Our proposed algorithm generates a concise structured set of documents maximizing coverage of salient pieces of information. Most importantly, metro maps explicitly show the relations among retrieved pieces in a way that captures story development. We first formalize characteristics of good maps and formulate their construction as an optimization problem. Then we provide efficient methods with theoretical guarantees for generating maps. Finally, we integrate user interaction into our framework, allowing users to alter the maps to better reflect their interests. Pilot user studies with a real-world dataset demonstrate that the method is able to produce maps which help users acquire knowledge efficiently. Dafna Shahaf, Carlos Guestrin, Eric Horvitz |
WWW | 1 |
| 2012 | Connecting Two (or Less) Dots: Discovering Structure in News ArticlesabstractFinding information is becoming a major part of our daily life. Entire sectors, from Web users to scientists and intelligence analysts, are increasingly struggling to keep up with the larger and larger amounts of content published every day. With this much data, it is often easy to miss the big picture. In this article, we investigate methods for automatically connecting the dots---providing a structured, easy way to navigate within a new topic and discover hidden connections. We focus on the news domain: given two news articles, our system automatically finds a coherent chain linking them together. For example, it can recover the chain of events starting with the decline of home prices (January 2007), and ending with the health care debate (2009). We formalize the characteristics of a good chain and provide a fast search-driven algorithm to connect two fixed endpoints. We incorporate user feedback into our framework, allowing the stories to be refined and personalized. We also provide a method to handle partially-specified endpoints, for users who do not know both ends of a story. Finally, we evaluate our algorithm over real news data. Our user studies demonstrate that the objective we propose captures the users’ intuitive notion of coherence, and that our algorithm effectively helps users understand the news. Dafna Shahaf, Carlos Guestrin |
ACM Trans. Knowl. Discov. Data | 1 |
| 2011 | Connecting the Dots between News ArticlesabstractThe process of extracting useful knowledge from large datasets has become one of the most pressing problems in today’s so-ciety. The problem spans entire sectors, from scientists to in-telligence analysts and web users, all of whom are constantly struggling to keep up with the larger and larger amounts of content published every day. With this much data, it is often easy to miss the big picture. In this paper, we investigate methods for automatically connecting the dots – providing a structured, easy way to navigate within a new topic and discover hidden connec-tions. We focus on the news domain: given two news arti-cles, our system automatically finds a coherent chain link-ing them together. For example, it can recover the chain of events starting with the decline of home prices (January 2007), and ending with the ongoing health-care debate. We formalize the characteristics of a good chain and pro-vide an efficient algorithm (with theoretical guarantees) to connect two fixed endpoints. We incorporate user feedback into our framework, allowing the stories to be refined and personalized. Finally, we evaluate our algorithm over real news data. Our user studies demonstrate the algorithm’s effectiveness in helping users understanding the news. Dafna Shahaf, Carlos Guestrin |
IJCAI | 1 |
| 2010 | Generalized Task Markets for Human and Machine ComputationabstractWe discuss challenges and opportunities for developing generalized task markets where human and machine intelligence are enlisted to solve problems, based on a consideration of the competencies, availabilities, and pricing of different problem-solving resources. The approach couples human computation with machine learning and planning, and is aimed at optimizing the flow of subtasks to people and to computational problem solvers. We illustrate key ideas in the context of Lingua Mechanica, a project focused on harnessing human and machine translation skills to perform translation among languages. We present infrastructure and methods for enlisting and guiding human and machine computation for language translation, including details about the hardness of generating plans for assigning tasks to solvers. Finally, we discuss studies performed with machine and human solvers, focusing on components of a Lingua Mechanica prototype. Dafna Shahaf, Eric Horvitz |
AAAI | 1 |
| 2010 | Connecting the dots between news articlesabstractThe process of extracting useful knowledge from large datasets has become one of the most pressing problems in today's society. The problem spans entire sectors, from scientists to intelligence analysts and web users, all of whom are constantly struggling to keep up with the larger and larger amounts of content published every day. With this much data, it is often easy to miss the big picture. Dafna Shahaf, Carlos Guestrin |
KDD | 1 |
| 2009 | Investigations of Continual Computation
Dafna Shahaf, Eric Horvitz |
IJCAI | 1 |
| 2009 | Turning down the noise in the blogosphereabstractIn recent years, the blogosphere has experienced a substantial increase in the number of posts published daily, forcing users to cope with information overload. The task of guiding users through this flood of information has thus become critical. To address this issue, we present a principled approach for picking a set of posts that best covers the important stories in the blogosphere. Khalid El-Arini, Gaurav Veda, Dafna Shahaf, Carlos Guestrin |
KDD | 3 |
| 2007 | Logical Circuit Filtering
Dafna Shahaf, Eyal Amir |
IJCAI | 1 |
| 2006 | Learning Partially Observable Action Schemas
Dafna Shahaf, Eyal Amir |
AAAI | 1 |
| 2006 | Learning Partially Observable Action Models: Efficient Algorithms
Dafna Shahaf, Allen Chang, Eyal Amir |
AAAI | 1 |