Since August 2009, I have been a Research Scientist at the USC Information Sciences Institute. From July 2011, I am also a Research Assistant Professor at the University of Southern California. My research interests lie in large scale knowledge acquisition from the Web, lexical semantics, ontology population and information extraction.

Current and Recent Activities:

• Organizer:
  - Natural Language Seminar series at ISI (August 2010 - September 2011)


• Co-Organizer:
  SemEval 2012 task #7 on Choice Of Plausible Alternatives (COPA)
  SemEval 2013 task #12 on Free Paraphrases of Noun Compounds
  SemEval 2013 task #14 on Sentiment Analysis on Twitter
  Workshop on Relational Models of Semantics (ACL 2011)
  Workshop on Information Extraction and Knowledge Acquisition (RANLP 2011)
  - CCICADA/VACCINE Reconnect Conference 2010
  - SemEval 2010 task #8 on Classifying Relations Between Nominals


• Tutorial
  Web Knowledge Extraction and Applications at RANLP 2011


• Recent Award
  RANLP'2011 Young Researcher Award


• Recent Talks
  - Learning Arguments, Supertypes and Selectional Restrictions of Semantic Relations (University of Utah, May 2011)
  - Graph-based Knowledge Acquisition from the Web (eBay, February 2011)
  - Cause-Effect Relation Learning using the Web as a Corpus (ICT, February 2011)
  - Learning the Encyclopedia of the World using the Web (USC, January 2011)


• Teaching:
  CSCI 544 Natural Language Processing at USC with Eduard Hovy and Jerry Hobbs (Spring 2012; Spring 2011; Spring 2010).
  - Information Extraction at Reconnect Summer Tutorial Program, with Eduard Hovy, Dan Roth and John Stasko.


• Served on NSF panel
• Served the Research Grant Council (RGC), Hong Kong


• Program Committee:
  - GSCL 2012
  - ACL 2012 (served the Lexical Semantics, and Lexicon and Ontology tracks)
  - NAACL 2012
  - AAAI 2012
  - EACL 2012 (served the Text Mining and NLP Applications, Semantics, and Sentiment Analysis and Opinion Mining tracks)
  - WWW 2012
  - LREC 2012
  - NLDB 2012
  - NAACL 2012 student workshop
  - EACL 2012 student workshop
  - TextGraphs-7 Graph-based Methods for Natural Language Processing (ACL 2012 workshop)
  - The People’s Web meets NLP: Collaboratively Constructed Semantic Resources and their Applications to NLP (ACL 2012 workshop)
  - Computational Approaches to Subjectivity and Sentiment Analysis (EACL 2012 workshop)
  - Multiword Expressions (*Sem 2012 workshop)
  - IJCNLP 2011
  - EMNLP 2011
  - AAAI 2011
  - ACL 2011
  - IJCAI 2011
  - NLDB 2011
  - Search and Mining User generated Contents (CIKM 2011 workshop)
  - GEMS: GEometrical Models of Natural Language Semantics (EMNLP 2011 workshop)
  - MWE: Workshop on Multiword Expressions (ACL 2011 workshop)
  - WASSA: 2nd Workshop on Computational Approaches to Subjectivity and Sentiment Analysis (ACL 2011 workshop)
  - FAM-LbR/KRAQ: Learning by Reading and its Applications in Intelligent Question-Answering (IJCAI 2011 workshop)
  - ICL (SEPLN 2011 workshop)
  - EMNLP 2010
  - SMUC 2010
  - SemEval-2 2010
  - LREC 2010
  - Workshop on Multiword Expressions (COLING 2010)
  - Workshop on Computational Approaches to Analysis and Generation of Emotion in Text (NAACL 2010)
  - Workshop on Semantic Search (NAACL 2010)
  - Workshop on Computational Approaches to Subjectivity and Sentiment Analysis (WASSA 2010)
  
  
• Reviewer:
  - Journal of Computational Linguistics (2012)
  - Journal of Natural Language Engineering (2011), Serving the Guest Editorial Board
  - Journal of Language Resources and Evaluation, Special Issue on WordNets and Relations (2011)
  - Journal of Language Resources and Evaluation, Special Issue on SemEval-2010 (2011)
  - Journal of Language Resources and Evaluation, Special Issue on ShortTexts (2011)
  - Journal of Transactions on Speech and Language Processing (2011)
  - Journal of Artificial Intelligence (2010)
  - Journal of Transactions on Intelligent Systems and Technology (2010)
  - Joutnal of Computational Sciences (2010)
  - Journal of Data and Knowledge Engineering (2010)
  - Journal of Computational Itelligence (2010)
  - Coling 2010
  - Journal of Natural Language Engineering (2009)
  - Journal of Web Semantics (2009)
  - Journal New Generation Computing (2009)

Selected Publications:

• Zornitsa Kozareva, Konstantin Voevodski and Shanghua Teng, Class Label Enhancement via Related Instances. To appear in Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2011), Edinburgh, Scotland, UK


• Zornitsa Kozareva and Eduard Hovy, Insights from Network Structure for Text Mining. in Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL-HLT 2011), Portland


• Zornitsa Kozareva and Eduard Hovy, A Semi-Supervised Method to Learn and Construct Taxonomies using the Web. In Proceedings of Conference on Empirical Methods in Natural Language Processing (EMNLP 2010), Boston


• Zornitsa Kozareva and Eduard Hovy, Learning Arguments and Supertypes of Semantic Relations using Recursive Patterns. In Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics (ACL 2010), Sweden


• Zornitsa Kozareva and Eduard Hovy, Not All Seeds Are Equal: Measuring the Quality of Text Mining Seeds. In Proceedings of Conference of the North American Chapter of the Association for Computational Linguistics - Human Language Technologies (NAACL/HLT 2010), Los Angeles


• Eduard Hovy, Zornitsa Kozareva and Ellen Riloff. Toward Completeness in Concept Extraction and Classification. in Proceedings of Conference on Empirical Methods in Natural Language Processing (EMNLP 2009), Singapore, August 2009


• Zornitsa Kozareva, Ellen Riloff and Eduard Hovy. Semantic Class Learning from the Web with Hyponym Pattern Linkage Graphs. in Proceedings of the 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies, (ACL-08: HLT), Columbus, USA, June 2008


• Iris Hendrickx, Su Nam Kim, Zornitsa Kozareva, Preslav Nakov, Diarmuid O Seaghdha,Sebastian Pado, Marco Pennacchiotti, Lorenza Romano and Stan Szpakowicz. Multi-Way Classification of Semantic Relations Between Pairs of Nominals. in Proceedings of the NAACL-HLT-09 Workshop on Semantic Evaluations: Recent Achievements and Future Directions (SEW-09), Boulder, USA, May 2009.