Coreference resolution
What it is
Coreference resolution finds the words of a text that refer to the same person or thing. In «Mary met her brother. She gave him a book.», «Mary», «her» and «She» are one person, «her brother» and «him» another. Every reader does this without noticing; a program has to work it out.
The hard cases need knowledge of the world: in «The trophy did not fit in the suitcase because it was too big», «it» is the trophy, and changing «big» to «small» makes it the suitcase. Systems are measured by how well their chains of mentions agree with chains marked by people, with several scores because there is no single right way to compare chains.
How Mova does it
Mova resolves coreference with a sieve: a series of rules from the most precise to the most permissive, each linking mentions for a stated reason (the same name, an appositive, a pronoun that agrees in number, gender and class), so every link can say why it was made. The frames reader uses the result to keep track of who acts in a story.
The papers (96)
- Resolving Pronoun References
measured— Jerry R. Hobbs, 1978 · 612 citations - Deterministic Coreference Resolution Based on Entity-Centric, Precision-Ranked Rules
measured— Heeyoung Lee, Angel Chang, Yves Peirsman, Nathanael Chambers et al., 2013 · 384 citations - Scoring Coreference Partitions of Predicted Mentions: A Reference Implementation
measured— Sameer Pradhan, Xiaoqiang Luo, Marta Recasens, Eduard Hovy et al., 2014 · 175 citations - Anaphora With Non-nominal Antecedents in Computational Linguistics: a Survey
1 idea kept— Varada Kolhatkar, Adam Roussel, Stefanie Dipper, Heike Zinsmeister, 2018 · 28 citations - What is it? Disambiguating the different readings of the pronoun 'it'
1 idea kept— Sharid Loáiciga, Liane Guillou, Christian Hardmeier, 2017 · 16 citations - A Predictive Model for Notional Anaphora in English
2 ideas kept— Amir Zeldes, 2018 · 6 citations - A Multi-Pass Sieve for Coreference Resolution
measured— Karthik Raghunathan, Heeyoung Lee, Sudarshan Rangarajan, Nathanael Chambers et al., 2010 - On Coreference Resolution Performance Metrics
measured— Xiaoqiang Luo, 2005 - Algorithms for Scoring Coreference Chains
measured— Amit Bagga, Breck Baldwin, 1998 - A Model-Theoretic Coreference Scoring Scheme
measured— Marc Vilain, John Burger, John Aberdeen, Dennis Connolly et al., 1995 - A Machine Learning Approach to Coreference Resolution of Noun Phrases — Wee Meng Soon, Hwee Tou Ng, Daniel Chung Yong Lim, 2001 · 982 citations
- End-to-end Neural Coreference Resolution — Kenton Lee, Luheng He, Mike Lewis, Luke Zettlemoyer, 2017 · 869 citations
- Looking Beyond the Surface: A Challenge Set for Reading Comprehension over Multiple Sentences — Daniel Khashabi, Snigdha Chaturvedi, Michael Roth, Shyam Upadhyay et al., 2018 · 374 citations
- Anaphora and Discourse Structure — Bonnie Webber, Matthew Stone, Aravind Joshi, Alistair Knott, 2003 · 246 citations
- On Coreferring: Coreference in MUC and Related Annotation Schemes — Kees van Deemter, Rodger Kibble, 2000 · 210 citations
- Easy Victories and Uphill Battles in Coreference Resolution — Greg Durrett, Dan Klein, 2013 · 195 citations
- Which Coreference Evaluation Metric Do You Trust? A Proposal for a Link-based Entity Aware Metric — Nafise Sadat Moosavi, Michael Strube, 2016 · 125 citations
- Dialogue Acts, Synchronizing Units, and Anaphora Resolution — Miriam Eckert, Michael Strube, 2000 · 90 citations
- Missing objects in Hebrew: Argument ellipsis, not VP ellipsis — Idan Landau, 2018 · 88 citations
- WikiCoref: An English Coreference-annotated Corpus of Wikipedia Articles — Abbas Ghaddar, Phillippe Langlais, 2016 · 70 citations
- Discourse Relations: A Structural and Presuppositional Account Using Lexicalised TAG — Bonnie Webber, Alistair Knott, Matthew Stone, Aravind Joshi, 1999 · 56 citations
- An Annotated Dataset of Coreference in English Literature — David Bamman, Olivia Lewke, Anya Mansoor, 2020 · 52 citations
- Parsing and presuppositions in the calculation of local contexts — Matt Mandelkern, Jacopo Romoli, 2017 · 51 citations
- The KnowRef Coreference Corpus: Removing Gender and Number Cues for Difficult Pronominal Anaphora Resolution — Ali Emami, Paul Trichelair, Adam Trischler, Kaheer Suleman et al., 2019 · 43 citations
- PreCo: A Large-scale Dataset in Preschool Vocabulary for Coreference Resolution — Hong Chen, Zhenhua Fan, Hao Lu, Alan Yuille et al., 2018 · 42 citations
- Bridging Anaphora Resolution as Question Answering — Yufang Hou, 2020 · 41 citations
- Unrestricted Bridging Resolution — Yufang Hou, Katja Markert, Michael Strube, 2018 · 31 citations
- Lexical Features in Coreference Resolution: To be Used With Caution — Nafise Sadat Moosavi, Michael Strube, 2017 · 31 citations
- Resolving Discourse Deictic Anaphora in Dialogues — Miriam Eckert, Michael Strube, 1999 · 30 citations
- Incremental Neural Coreference Resolution in Constant Memory — Patrick Xia, João Sedoc, Benjamin Van Durme, 2020 · 28 citations
- On Generalization in Coreference Resolution — Shubham Toshniwal, Patrick Xia, Sam Wiseman, Karen Livescu et al., 2021 · 27 citations
- A Mention-Ranking Model for Abstract Anaphora Resolution — Ana Marasović, Leo Born, Juri Opitz, Anette Frank, 2017 · 27 citations
- The CODI-CRAC 2021 Shared Task on Anaphora, Bridging, and Discourse Deixis in Dialogue — Sopan Khosla, Juntao Yu, Ramesh Manuvinakurike, Vincent Ng et al., 2021 · 22 citations
- Recall Error Analysis for Coreference Resolution — Sebastian Martschat, Michael Strube, 2014 · 22 citations
- LingMess: Linguistically Informed Multi Expert Scorers for Coreference Resolution — Shon Otmazgin, Arie Cattan, Yoav Goldberg, 2023 · 19 citations
- Using Linguistic Features to Improve the Generalization Capability of Neural Coreference Resolvers — Nafise Sadat Moosavi, Michael Strube, 2018 · 19 citations
- Verb Phrase Ellipsis Resolution Using Discriminative and Margin-Infused Algorithms — Kian Kenyon-Dean, Jackie Chi Kit Cheung, Doina Precup, 2016 · 17 citations
- Exploring the steps of Verb Phrase Ellipsis — Zhengzhong Liu, Edgar Gonzàlez Pellicer, Daniel Gillick, 2016 · 15 citations
- Ellipsis Resolution as Question Answering: An Evaluation — Rahul Aralikatte, Matthew Lamm, Daniel Hardt, Anders Søgaard, 2021 · 13 citations
- Beyond Identity Coreference: Contrasting Indicators of Textual Coherence in English and German — Kerstin Kunz, Ekaterina Lapshinova-Koltunski, José Manuel Martínez, 2016 · 11 citations
- DocAMR: Multi-Sentence AMR Representation and Evaluation — Tahira Naseem, Austin Blodgett, Sadhana Kumaravel, Tim O'Gorman et al., 2022 · 10 citations
- Antecedent Selection for Sluicing: Structure and Content — Pranav Anand, Daniel Hardt, 2016 · 10 citations
- Recognition of They/Them as Singular Personal Pronouns in Coreference Resolution — Connor Baumler, Rachel Rudinger, 2022 · 8 citations
- Opinion Piece: Can we Fix the Scope for Coreference? Problems and Solutions for Benchmarks beyond OntoNotes — Amir Zeldes, 2022 · 6 citations
- Free the Plural: Unrestricted Split-Antecedent Anaphora Resolution — Juntao Yu, Nafise Sadat Moosavi, Silviu Paun, Massimo Poesio, 2020 · 6 citations
- Using Automatically Extracted Minimum Spans to Disentangle Coreference Evaluation from Boundary Detection — Nafise Sadat Moosavi, Leo Born, Massimo Poesio, Michael Strube, 2019 · 4 citations
- The Use of Parallel and Comparable Data for Analysis of Abstract Anaphora in German and English — Stefanie Dipper, Melanie Seiss, Heike Zinsmeister, 2012 · 4 citations
- Focusing for Pronoun Resolution in English Discourse: An Implementation — Ebru Ersan, Varol Akman, 1994 · 4 citations
- Challenges to Evaluating the Generalization of Coreference Resolution Models: A Measurement Modeling Perspective — Ian Porada, Alexandra Olteanu, Kaheer Suleman, Adam Trischler et al., 2024 · 3 citations
- Variation in Coreference Strategies across Genres and Production Media — Berfin Aktaş, Manfred Stede, 2020 · 3 citations
- Findings of the Fourth Shared Task on Multilingual Coreference Resolution: Can LLMs Dethrone Traditional Approaches? — Michal Novák, Miloslav Konopik, Anna Nedoluzhko, Martin Popel et al., 2025 · 2 citations
- AmbiCoref: Evaluating Human and Model Sensitivity to Ambiguous Coreference — Yuewei Yuan, Chaitanya Malaviya, Mark Yatskar, 2023 · 2 citations
- Scoring Coreference Chains with Split-Antecedent Anaphors — Silviu Paun, Juntao Yu, Nafise Sadat Moosavi, Massimo Poesio, 2023 · 2 citations
- The English past tense as a definite description — Ruoying Zhao, 2023 · 2 citations
- Anatomy of OntoGUM—Adapting GUM to the OntoNotes Scheme to Evaluate Robustness of SOTA Coreference Algorithms — Yilun Zhu, Sameer Pradhan, Amir Zeldes, 2021 · 1 citations
- Finding The Right One and Resolving it — Payal Khullar, Arghya Bhattacharya, Manish Shrivastava, 2020 · 1 citations
- Anaphora and Deixis in Tiberian Hebrew: Semantically Mapping the Case for a Distance-Neutral Demonstrative — David Kummerow, 2014 · 1 citations
- Beyond Word Boundaries: A Hebrew Coreference Benchmark and an Evaluation Protocol for Morphologically Complex Text — Refael Shaked Greenfeld, Reut Tsarfaty, 2026
- Findings of the Fifth Shared Task on Multilingual Coreference Resolution: Expanding Datasets for Long-Range Entities — Michal Novák, Miloslav Konopík, Anna Nedoluzhko, Martin Popel et al., 2026
- GUMBridge: A Corpus for Varieties of Bridging Anaphora — Lauren Levine, Amir Zeldes, 2026
- What's in a Bridge?: A Descriptive, Multi-Genre Analysis of the GUMBridge Corpus for Varieties of Bridging Anaphora — Lauren Levine, Amir Zeldes, 2026
- Subjectivity in the Annotation of Bridging Anaphora — Lauren Levine, Amir Zeldes, 2025
- Syntax of referents of relative markers: Evidence from a corpus of learner English — Izabela Czerniak, Debopam Das, 2025
- Towards Named-Entity and Coreference Annotation of the Hebrew Bible — Daniel G. Swanson, Bryce D. Bussert, Francis Tyers, 2024
- Unifying the Scope of Bridging Anaphora Types in English: Bridging Annotations in ARRAU and GUM — Lauren Levine, Amir Zeldes, 2024
- Can language models capture syntactic associations without surface cues? A case study of reflexive anaphor licensing in English control constructions — Soo-Hwan Lee, Sebastian Schuster, 2022
- CorefUD 1.0: Coreference Meets Universal Dependencies — Anna Nedoluzhko, Michal Novák, Martin Popel, Zdeněk Žabokrtský et al., 2022
- PCR4ALL: A Comprehensive Evaluation Benchmark for Pronoun Coreference Resolution in English — Xinran Zhao, Hongming Zhang, Yangqiu Song, 2022
- The CODI-CRAC 2022 Shared Task on Anaphora, Bridging, and Discourse Deixis in Dialogue — Juntao Yu, Sopan Khosla, Ramesh Manuvinakurike, Lori Levin et al., 2022
- Can predicate-argument relationships be extracted from UD trees? — Adam Ek, Jean-Philippe Bernardy, Stergios Chatzikyriakidis, 2021
- Coreference meets Universal Dependencies – a pilot experiment on harmonizing coreference datasets for 11 languages — Anna Nedoluzhko, Michal Novák, Martin Popel, Zdeněk Žabokrtský et al., 2021
- Do UD Trees Match Mention Spans in Coreference Annotations? — Martin Popel, Zdeněk Žabokrtský, Anna Nedoluzhko, Michal Novák et al., 2021
- NoEl: An Annotated Corpus for Noun Ellipsis in English — Payal Khullar, Kushal Majmundar, Manish Shrivastava, 2020
- GBI Treebanks as a Resource for New Applications — Andi Wu, 2019
- Bridging resolution: Task definition, corpus resources and rule-based experiments — Ina Roesiger, Arndt Riester, Jonas Kuhn, 2018
- Inference is Everything: Recasting Semantic Resources into a Unified Evaluation Framework — Aaron Steven White, Pushpendre Rastogi, Kevin Duh, Benjamin Van Durme, 2017
- New perspectives on cohesion and coherence: Implications for translation — Katrin Menzel, Ekaterina Lapshinova-Koltunski, Kerstin Kunz, 2017
- ARRAU: Linguistically-Motivated Annotation of Anaphoric Descriptions — Olga Uryupina, Ron Artstein, Antonella Bristot, Federica Cavicchio et al., 2016
- SciCorp: A Corpus of English Scientific Articles Annotated for Information Status Analysis — Ina Roesiger, 2016
- (Pre-)Annotation of Topic-Focus Articulation in Prague Czech-English Dependency Treebank — Jiří Mírovský, Kateřina Rysová, Magdaléna Rysová, Eva Hajičová, 2013
- Error-Driven Analysis of Challenges in Coreference Resolution — Jonathan K. Kummerfeld, Dan Klein, 2013
- Global Inference for Bridging Anaphora Resolution — Yufang Hou, Katja Markert, Michael Strube, 2013
- CoNLL-2012 Shared Task: Modeling Multilingual Unrestricted Coreference in OntoNotes — Sameer Pradhan, Alessandro Moschitti, Nianwen Xue, Olga Uryupina et al., 2012
- CoNLL-2011 Shared Task: Modeling Unrestricted Coreference in OntoNotes — Sameer Pradhan, Lance Ramshaw, Mitchell Marcus, Martha Palmer et al., 2011
- Singletons and Coreference Resolution Evaluation — Sandra Kübler, Desislava Zhekova, 2011
- Stanford's Multi-Pass Sieve Coreference Resolution System at the CoNLL-2011 Shared Task — Heeyoung Lee, Yves Peirsman, Angel Chang, Nathanael Chambers et al., 2011
- Coreference Resolution across Corpora: Languages, Coding Schemes, and Preprocessing Information — Marta Recasens, Eduard Hovy, 2010
- Supervised Noun Phrase Coreference Research: The First Fifteen Years — Vincent Ng, 2010
- Conundrums in Noun Phrase Coreference Resolution: Making Sense of the State-of-the-Art — Veselin Stoyanov, Nathan Gilbert, Claire Cardie, Ellen Riloff, 2009
- Resolving Multiple Wh-Fragments: A Syntax-Pragmatics Approach — Sang-Hee Park, 2009
- Simple Coreference Resolution with Rich Syntactic and Semantic Features — Aria Haghighi, Dan Klein, 2009
- Merging PropBank, NomBank, TimeBank, Penn Discourse Treebank and Coreference — James Pustejovsky, Adam Meyers, Martha Palmer, Massimo Poesio, 2005
- An Empirical Approach to VP Ellipsis — Daniel Hardt, 1997
- CogNIAC: high precision coreference with limited knowledge and linguistic resources — Breck Baldwin, 1997
- CogNIAC: A Discourse Processing Engine — Breck Baldwin, 1995
- An Algorithm for Pronominal Anaphora Resolution — Shalom Lappin, Herbert J. Leass, 1994
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