Ellen Riloff's Publications
Selected Publications Topics
Huang, R., Cases, I., Jurafsky, D., Condoravdi, C., and Riloff, E., (2016) "Distinguishing Past, On-going, and Future Events: The EventStatus Corpus" , Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing (EMNLP 2016) Events, Temporal
Ding, H. and Riloff, E., (2016) "Acquiring Knowledge of Affective Events from Blogs using Label Propagation", Proceedings of the Thirtieth AAAI Conference on Artificial Intelligence (AAAI 2016) Sentiment, Events
Qadir, A., Riloff, E., and Walker, M. A. (2016) "Automatically Inferring Implicit Properties in Similes", Proceedings of the 15th Annual Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (NAACL 2016) Similes
Oraby, S., Harrison, V., Reed, L., Hernandez, E., Riloff, E., and Walker, M. (2016) "Creating and Characterizing a Diverse Corpus of Sarcasm in Dialogue", Proceedings of the 17th Annual SIGdial Meeting on Discourse and Dialogue (SIGDIAL 2016) Sarcasm
Wagstaff, K., Riloff, E., Lanza, N., Mattmann, C., and Ramirez P. (2016) "Creating a Mars Target Encyclopedia by Extracting Information from the Planetary Science Literature", AAAI-16 Workshop on Knowledge Extraction from Text (KET). InfoExtract, Astronomy
Kumar, S., Pujara, J., Getoor, L., Mares, D., Gupta, D., and Riloff, E. (2016) "Unsupervised Models for Predicting Strategic Relations between Organizations", The 2016 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2016). SocialMedia
Ding, H. and Riloff, E. (2015) "Extracting Information about Medication Use from Veterinary Discussions", Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics - Human Language Technologies (NAACL 2015). InfoExtract, Veterinary
Qadir, A., Riloff, E., and Walker, M. A. (2015) "Learning to Recognize Affective Polarity in Similes", Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing (EMNLP 2015). Similes, Sentiment
Oraby, S., Reed, L., Compton, R., Riloff, E., Walker, M., and Whittaker, S. (2015) "And That's a Fact: Distinguishing Factual and Emotional Argumentation in Online Dialogue", 2nd Workshop on Argumentation Mining at NAACL 2015. Sentiment, Argumentation
Kim, Y., Riloff, E., and Hurdle, J. (2015) "A Study of Concept Extraction Across Different Types of Clinical Notes", Proceedings of the AMIA 2015 Annual Symposium. InfoExtract, Medicine
Kim, Y. and Riloff, E., (2015) "Stacked Generalization for Medical Concept Extraction from Clinical Notes", ACL 2015 Workshop on Biomedical Natural Language Processing (BioNLP 2015) InfoExtract, Medicine
Qadir, A. and Riloff, E. (2014) "Learning Emotion Indicators from Tweets: Hashtags, Hashtag Patterns, and Phrases", 2014 Conference on Empirical Methods in Natural Language Processing (EMNLP 2014). Sentiment, SocialMedia
De Silva, L. and Riloff, E. (2014) "User Type Classification of Tweets with Implications for Event Recognition", 2014 ACL Joint Workshop on Social Dynamics and Personal Attributes in Social Media. SocialMedia, Events
Huang, R. and Riloff, E., (2013) "Multi-faceted Event Recognition with Bootstrapped Dictionaries", Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (NAACL 2013). InfoExtract, Events
Huang, R. and Riloff, E. (2013) "Classifying Message Board Posts with an Extracted Lexicon of Patient Attributes", Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing (EMNLP 2013). . InfoExtract, Veterinary
Riloff, E., Qadir, A., Surve, P., De Silva, L., Gilbert, N., and Huang, R. (2013) "Sarcasm as Contrast between a Positive Sentiment and Negative Situation", Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing (EMNLP 2013).

DATA: download the sarcasm data set ; GUIDELINES: download the annotation guidelines.

Sarcasm, Sentiment
Qadir, A. and Riloff, E. (2013) "Bootstrapped Learning of Emotion Hashtags #hashtags4you", The 4th Workshop on Computational Approaches to Subjectivity, Sentiment & Social Media Analysis (WASSA 2013). Sentiment, SocialMedia
Gilbert, N. and Riloff, E., (2013) "Domain-Specific Coreference Resolution with Lexicalized Features", Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (ACL 2013). Coreference
Goyal, A., Riloff, E., Daume III, H. (2013) "A Computational Model for Plot Units" , Computational Intelligence, Volume 29, Issue 3, August 2013. Plot Units, Sentiment
Qadir, A. and Riloff, E. (2012) "Ensemble-based Semantic Lexicon Induction for Semantic Tagging", Proceedings of the First Joint Conference on Lexical and Computational Semantics (*SEM 2012), *SEM Best Paper Award. Semantics, Coreference
Huang, R. and Riloff, E. (2012) "Modeling Textual Cohesion for Event Extraction", Proceedings of the 26th Conference on Artificial Intelligence (AAAI 2012) . InfoExtract, Events
Huang, R. and Riloff, E. (2012) "Bootstrapped Training of Event Extraction Classifiers", Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics (EACL 2012). InfoExtract, Events
Huang, R. and Riloff, E. (2011) "Peeling Back the Layers: Detecting Event Role Fillers in Secondary Contexts", Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL 2011). InfoExtract, Events
Qadir, A. and Riloff, E. (2011) "Classifying Sentences as Speech Acts in Message Board Posts", in Proceedings of the 2011 Conference on Empirical Methods in Natural Language Processing (EMNLP 2011). Speech Acts, Veterinary
Wiebe, J. and Riloff, E. (2011) "Finding Mutual Benefit between Subjectivity Analysis and Information Extraction", IEEE Transactions on Affective Computing, Vol. 2, No. 4, pp. 175-191. InfoExtract, Sentiment
Kim, Y., Riloff, E., and Meystre, Stephane M. (2011) "Improving Classification of Medical Assertions in Clinical Notes", Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL 2011). InfoExtract, Medicine
Pokkunuri, S., Ramakrishnan, C., Riloff, E., Hovy, E., Burns, G. (2011) "The Role of Information Extraction in the Design of a Document Triage Application for Biocuration", ACL 2011 Workshop on Biomedical Natural Language Processing (BioNLP 2011). InfoExtract, Biocuration
Kim, Y., Riloff, E., and Gilbert, N., (2011) "The Taming of Reconcile as a Biomedical Coreference Resolver", ACL 2011 Workshop on Biomedical Natural Language Processing (BioNLP 2011), Shared Task Paper. Coreference, Medicine
Huang, R. and Riloff, E. (2010) "Inducing Domain-specific Semantic Class Taggers from (Almost) Nothing", Proceedings of The 48th Annual Meeting of the Association for Computational Linguistics (ACL 2010). Semantics, Veterinary
Hobbs, J. and Riloff, E. (2010) "Information Extraction", Handbook of Natural Language Processing, 2nd Edition, Editors: Nitin Indurkhya and Fred J. Damerau, Chapman & Hall/CRC Press, Taylor & Francis Group. InfoExtract
Goyal, A., Riloff, E., Daume III, H. (2010) "Automatically Producing Plot Unit Representations for Narrative Text", Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing (EMNLP 2010).
The data used for our plot units work can be downloaded here: http://www.umiacs.umd.edu/~amit/AESOP.html
Plot Units, Sentiment
Goyal, A., Riloff, E., Daume III, H., and Gilbert, N. (2010) "Toward Plot Units: Automatic Affect State Analysis", NAACL-HLT 2010 Workshop on Computational Approaches to Analysis and Generation of Emotion in Text. Plot Units, Sentiment
Stoyanov, V., Cardie, C., Gilbert, N., Riloff, E., Buttler, D., and Hysom, D. (2010) "Coreference Resolution with Reconcile", Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics (ACL 2010). Coreference
Stoyanov, V., Cardie, C., Gilbert, N., Riloff, E., Buttler, D., and Hysom, D. (2010) "Reconcile: A Coreference Resolution Research Platform", Technical Report, http://hdl.handle.net/1813/14919. Coreference
Ramakrishnan, C., Baumgartner Jr., W., Blake, J., Burns, Gully APC, Cohen, K. Bretonnel, Drabkin, H., Eppig, J., Hovy, E., Hsu, C., Hunter, L., Ingulfsen, T., Onda, H., Pokkunuri, S., Riloff, E., Roeder, C., and Verspoor, K. (2010) "Building the Scientific Knowledge Mine (SciKnowMine): a community-driven framework for text mining tools in direct service to biocuration", LREC-10 Workshop on New Challenges for NLP Frameworks. InfoExtract, Biocuration
Patwardhan, S. and Riloff, E. (2009) "A Unified Model of Phrasal and Sentential Evidence for Information Extraction", Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing (EMNLP-09) . InfoExtract, Events
Stoyanov, V., Gilbert, N., Cardie, C., and Riloff, E. (2009) "Conundrums in Noun Phrase Coreference Resolution: Making Sense of the State-of-the-Art" , Proceedings of the Joint Conference of the 47th Annual Meeting of the Association for Computational Linguistics and the 4th International Joint Conference on Natural Language Processing of the Asian Federation of Natural Language Processing (ACL-IJCNLP 2009). Coreference
Hovy, E., and Kozareva, Z., and Riloff, E. (2009) "Toward Completeness in Concept Extraction and Classification", Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing (EMNLP-09). Semantics
Kozareva, Z., Hovy, E., and Riloff, E. (2009) "Learning and Evaluating the Content and Structure of a Term Taxonomy", AAAI-09 Spring Symposium on Learning by Reading and Learning to Read. Semantics
Igo, S. and Riloff, E. (2009) "Corpus-based Semantic Lexicon Induction with Web-based Corroboration", NAACL-09 Workshop on Unsupervised and Minimally Supervised Learning of Lexical Semantics. Semantics
Kozareva, Z., Riloff, E., and Hovy, E. (2008) "Semantic Class Learning from the Web with Hyponym Pattern Linkage Graphs", Proceedings of the 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL-08). Semantics
Igo, S. and Riloff, E. (2008) "Learning to Identify Reduced Passive Verb Phrases with a Shallow Parser", Proceedings of the 23rd AAAI Conference on Artificial Intelligence (AAAI-08). ShallowParsing
Patwardhan, S. and Riloff, E. (2007) "Effective Information Extraction with Semantic Affinity Patterns and Relevant Regions", Proceedings of the 2007 Conference on Empirical Methods in Natural Language Processing (EMNLP-07) . InfoExtract, Events
Phillips, W. and Riloff, E. (2007) "Exploiting Role-Identifying Nouns and Expressions for Information Extraction", Proceedings of the 2007 Conference on Recent Advances in Natural Language Processing (RANLP-07) . InfoExtract, Events
Price, D., Riloff, E., and Zachary, J. (2007) "A Study to Evaluate a Natural Language Interface for Computer Science Education", AIED 2007 Workshop on Emerging Technologies for Inquiry-Based Learning in Science. NL_Interface, Java
Riloff, E., Patwardhan, S., and Wiebe, J. (2006) "Feature Subsumption for Opinion Analysis", Proceedings of the 2006 Conference on Empirical Methods in Natural Language Processing (EMNLP-06) Opinions
Patwardhan, S. and Riloff, E. (2006) "Learning Domain-Specific Information Extraction Patterns from the Web", ACL 2006 Workshop on Information Extraction Beyond the Document. InfoExtract, Events
Riloff, E., Mann, G. S., and Phillips, W., (2006) "Reverse-Engineering Question/Answer Collections from Ordinary Text", in Advances in Open Domain Question Answering, Strzalkowski, T. and Harabagiu, S. (Eds.), Springer Series: Text, Speech and Language Technology , Vol. 32. Q/A
Choi, Y., Cardie, C., Riloff, E., and Patwardhan, S. (2005) "Identifying Sources of Opinions with Conditional Random Fields and Extraction Patterns", Proceedings of the 2005 Human Language Technology Conference / Conference on Empirical Methods in Natural Language Processing (EMNLP 2005) Opinions, InfoExtract
Riloff, E., Wiebe, J., and Phillips, W. (2005) "Exploiting Subjectivity Classification to Improve Information Extraction", Proceedings of the 20th National Conference on Artificial Intelligence (AAAI 2005) . InfoExtract, Sentiment
Wiebe, J. and Riloff, E. (2005) "Creating Subjective and Objective Sentence Classifiers from Unannotated Texts", Proceedings of the 6th International Conference on Computational Linguistics and Intelligent Text Processing (CICLing-05), Invited Paper, Springer LNCS Vol. 3406 © Springer-Verlag . Sentiment
Wilson, T., Hoffmann, P., Somasundaran, S., Kessler, J., Wiebe, J., Choi, Y., Cardie, C., Riloff, E., and Patwardhan, S. (2005). "OpinionFinder: A system for subjectivity analysis.", Proceedings of EMNLP 2005 Interactive Demonstrations. (demo)

DATA + CODE: The MPQA opinion annotated corpus, the OpinionFinder system, and our Subjectivity Lexicon can all be downloaded from this site: http://www.cs.pitt.edu/mpqa/

Opinions
Bean, D. and Riloff, E. (2004) "Unsupervised Learning of Contextual Role Knowledge for Coreference Resolution" , Proceedings of the Human Language Technology Conference / North American Chapter of the Association for Computational Linguistics Annual Meeting (NAACL 2004). Coreference, InfoExtract
Riloff, E. and Phillips, W. (2004) "An Introduction to the Sundance and AutoSlog Systems", University of Utah School of Computing Technical Report #UUCS-04-015. ShallowParsing, InfoExtract
Riloff, E. and Wiebe, J. (2003) "Learning Extraction Patterns for Subjective Expressions", Proceedings of the 2003 Conference on Empirical Methods in Natural Language Processing (EMNLP-03) . Sentiment, InfoExtract
Riloff, E., Wiebe, J., and Wilson, T. (2003) "Learning Subjective Nouns Using Extraction Pattern Bootstrapping", Proceedings of the Seventh Conference on Natural Language Learning (CoNLL-2003) . Sentiment, InfoExtract
Jones, R., Ghani, R., Mitchell, T., and Riloff, E. (2003) "Active Learning for Information Extraction with Multiple View Feature Sets", ECML-03 Workshop on Adaptive Text Extraction and Mining . InfoExtract, ActiveLearn
Wiebe, J., Breck, E., Buckley, C., Cardie, C., Davis, P., Fraser, B., Litman, D., Pierce, D., Riloff, E., Wilson, T., Day, D., and Maybury, M. (2003) "Recognizing and Organizing Opinions Expressed in the World Press", AAAI Spring Symposium on New Directions in Question Answering . Opinions
Riloff, E., Schafer, C., and Yarowsky, D. (2002) "Inducing Information Extraction Systems for New Languages via Cross-Language Projection", Proceedings of the 19th International Conference on Computational Linguistics (COLING-02) . InfoExtract, Multilingual
Thelen, M. and Riloff, E. (2002) "A Bootstrapping Method for Learning Semantic Lexicons using Extraction Pattern Contexts", Proceedings of the 2002 Conference on Empirical Methods in Natural Language Processing (EMNLP-02).

CODE: You can download the Basilisk source code at http://www.cs.utah.edu/~riloff/code/BASILISKJava-v2.0.zip. The pattern data needs to be generated separately. The AutoSlog code to generate patterns is available upon request, but beware that it is C++ code that requires a unix-based platform and we don't maintain it anymore. However Basilisk can be applied to any pattern data, including N-grams and dependency relations.

Semantics, InfoExtract
Phillips, W. and Riloff, E. (2002) "Exploiting Strong Syntactic Heuristics and Co-Training to Learn Semantic Lexicons", Proceedings of the 2002 Conference on Empirical Methods in Natural Language Processing (EMNLP-02). Semantics, Co-Training
Wiebe, J., Breck. E., Buckley, C., Cardie, C., Davis, P., Fraser, B., Litman, D., Pierce, D., Riloff, E., and Wilson, T. (2002) "NRRC Summer Workshop on Multiple-Perspective Question Answering: Final Report" Q/A, Opinions
Light, M., Mann, G., Riloff, E., and Breck, E., (2001) "Analyses for Elucidating Current Question Answering Technology", Journal of Natural Language Engineering , Vol. 7, No. 4. Q/A
Breck, E., Light, M., Mann, G., Riloff, E., Brown, B., Anand, P., Rooth, M., and Thelen, M., (2001) "Looking Under the Hood: Tools for Diagnosing Your Question Answering Engine", ACL-2001 Workshop on Open-Domain Question Answering. Q/A
Riloff, E. and Thelen, M., (2000) "A Rule-based Question Answering System for Reading Comprehension Tests", ANLP/NAACL-2000 Workshop on Reading Comprehension Tests as Evaluation for Computer-Based Language Understanding Systems. Q/A
Price, D., Riloff, E., Zachary, J., and Harvey, B. (2000) "NaturalJava: A Natural Language Interface for Programming in Java", Proceedings of the 2000 International Conference on Intelligent User Interfaces. NL_Interface, Java
Bean, D. and Riloff, E. (1999) "Corpus-Based Identification of Non-Anaphoric Noun Phrases", Proceedings of the 37th Annual Meeting of the Association for Computational Linguistics (ACL 1999). Coreference
Riloff, E. and Jones, R. (1999) "Learning Dictionaries for Information Extraction by Multi-Level Bootstrapping", Proceedings of the Sixteenth National Conference on Artificial Intelligence (AAAI-99) , 1999, pp. 474-479. InfoExtract
Jones, R., McCallum, A,. Nigam, K., and Riloff, E. (1999) "Bootstrapping for Text Learning Tasks", IJCAI-99 Workshop on Text Mining: Foundations, Techniques, and Applications InfoExtract
Riloff, E. and Shepherd, J., (1999) "A Corpus-Based Bootstrapping Algorithm for Semi-Automated Semantic Lexicon Construction", Journal of Natural Language Engineering , 1999, Vol. 5, No. 2, pp. 147-156. Semantics
Riloff, E. (1999) "Information Extraction as a Stepping Stone toward Story Understanding", In Computational Models of Reading and Understanding, Ashwin Ram and Kenneth Moorman, eds., The MIT Press. InfoExtract
Riloff, E. and Lorenzen, J. (1999) "Extraction-based Text Categorization: Generating Domain-specific Role Relationships Automatically", In Natural Language Information Retrieval , Tomek Strzalkowski, ed., Kluwer Academic Publishers. TextCat, InfoExtract
Riloff, E. and Shepherd, J. (1997) "A Corpus-Based Approach for Building Semantic Lexicons", Proceedings of the Second Conference on Empirical Methods in Natural Language Processing (EMNLP-2) . Semantics
Riloff, E. and Schmelzenbach, M. (1998) "An Empirical Approach to Conceptual Case Frame Acquisition", Proceedings of the Sixth Workshop on Very Large Corpora (WVLC-98). InfoExtract, Semantics
Furnkranz, J., Mitchell, T., and Riloff E. (1998) "A Case Study in Using Linguistic Phrases for Text Categorization on the WWW", AAAI/ICML Workshop on Learning for Text Categorization. TextCat, InfoExtract
Riloff, E. (1996) "Automatically Generating Extraction Patterns from Untagged Text", Proceedings of the Thirteenth National Conference on Artificial Intelligence (AAAI-96) , 1996, pp. 1044-1049. InfoExtract, Events
Riloff, E. (1996) "An Empirical Study of Automated Dictionary Construction for Information Extraction in Three Domains", AI Journal , Vol. 85, August 1996. InfoExtract, Events
Riloff, E. (1996) "Using Learned Extraction Patterns for Text Classification", Connectionist, Statistical, and Symbolic Approaches to Learning for Natural Language Processing , S. Wermter, E. Riloff, and G. Scheler, eds., 1996. Springer-Verlag, Berlin. pp. 275-289. TextCat, InfoExtract
Riloff, E. (1995) "Little Words Can Make a Big Difference for Text Classification", Proceedings of the 18th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval , pp. 130-136. TextCat, InfoExtract
Riloff, E. and Lehnert, W. (1994) "Information Extraction as a Basis for High-Precision Text Classification", ACM Transactions on Information Systems , July 1994, Vol. 12, No. 3, pp. 296-333 TextCat, InfoExtract
Riloff, E. (1994) "Information Extraction as a Basis for Portable Text Classification Systems", Ph.D. Dissertation, Computer Science Department, University of Massachusetts Amherst InfoExtract, TextCat
Riloff, E. (1993) "Automatically Constructing a Dictionary for Information Extraction Tasks", Proceedings of the Eleventh National Conference on Artificial Intelligence (AAAI-93) , AAAI Press/The MIT Press, pp. 811-816.

HONORABLE MENTION: 2012 AAAI Classic Paper Award

InfoExtract, Events