As of August 1st, 2010 I am an associate professor at the University of Oslo, more specifically in the Language Technology group at the Dept. of Informatics.
I have previously worked as a researcher at Potsdam University, Germany, where I was involved in two projects: the PTOLEMAIOS project and the SFB 632 project on information structure, both led by Prof. Jonas Kuhn.
On May 31st, 2008 I defended my thesis Argument Differentiation. Soft constraints and data-driven models at the University of Gothenburg, Sweden, supervised by Elisabet Engdahl and Joakim Nivre.
Academic Interests
- Linguistically motivated, data-driven modeling and machine learning
- Data-driven, feature-rich dependency parsing
- Lexical semantic and syntactic acquisition
- The semantic property of animacy - its automatic acquisition and lexo-grammatical status
- Word order phenomena in Scandinavian languages
- Optimality-theoretic syntax; Bidirectional and Stochastic OT
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PhD-thesis |
Øvrelid, Lilja. 2008. "Argument Differentiation. Soft constraints and data-driven models". Data Linguistica. University of Gothenburg. [.pdf] [bibtex]
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Publications |
2012:
Øvrelid, Lilja and Skjærholt, Arne. 2012. "Lexical categories for improved parsing of web data". To appear in Proceedings of the 24th International Conference on Computational Linguistics (COLING), Mumbai, India.
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Skjærholt, Arne and Øvrelid, Lilja. 2012. "Impact of treebank characteristics on cross-lingual parser adaptation". To appear in Proceedings of Treebanks and Linguistic Theories (TLT11), Lisbon, Portugal.
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Lapponi, Emanuele and Read, Jonathon and Øvrelid, Lilja. 2012. "Representing and resolving negation for sentiment analysis." To appear in Proceedings of the 2012 ICDM Workshop on Sentiment Elicitation from Natural Text for Information Retrieval and Extraction. Brussels, Belgium.
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Read, Jonathon and Velldal, Erik and Øvrelid, Lilja. 2012. "Topic classification for Suicidology". In Journal of Computing Science and Engineering 6(2), pp. 143-150. [.pdf]
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Ivanova, Angelina and Oepen, Stephan and Øvrelid, Lilja and Flickinger, Dan. 2012. "Who did what to whom? A contrastive study of syntacto-semantic dependencies". In Proceedings of the 6th Linguistic Annotation Workshop (LAW). Jeju, Korea. Winner of the LAW VI Special Challenge. [.pdf]
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Read, Jonathon and Velldal, Erik and Øvrelid, Lilja and Oepen, Stephan. 2012. "Constituent-based discriminitive ranking for negation resolution". In Proceedings of the First Joint Conference on Lexical and Computational Semantics. Montreal, Canada. [.pdf]
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Lapponi, Emanuele and Velldal, Erik and Øvrelid, Lilja and Read, Jonathon. 2012. "Sequence-labeling negation using dependency features". In Proceedings of the First Joint Conference on Lexical and Computational Semantics. Montreal, Canada. [.pdf]
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Read, Jonathon and Flickinger, Dan and Dridan, Rebecca and Oepen, Stephan and Øvrelid, Lilja. 2012. "The WeSearch Corpus, Treebank and Treecache: A comprehensive sample of user-generated content". In Proceedings of the Eighth International Conference on Language Resources and Evaluation. Istanbul, Turkey. [.pdf]
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Velldal, Erik and Øvrelid, Lilja and Read, Jonathon and Oepen, Stephan. 2012. "Speculation and negation: Rules, rankers and the role of syntax". Computational Linguistics, 38(2).[.pdf]
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Read, Jonathon and Velldal, Erik and Øvrelid, Lilja. 2012. "Labeling emotions in suicide notes: Cost-sensitive learning using heterogeneous features". Biomedical Informatics Insights, 5 (Suppl. 1) pp. 99-103. [.pdf]
2011:
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Read, Jonathon and Velldal, Erik and Øvrelid, Lilja. 2011. "Topic Classification for Suicidology". In Proceedings of the Fourth International Symposium on Languages in Biology and Medicine.
[.pdf]
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Read, Jonathon and Velldal, Erik and Oepen, Stephan and Øvrelid, Lilja. 2011. "Resolving Speculation and Negation Scope in Biomedical Articles with a Syntactic Constituent Ranker". In Proceedings of the Fourth International Symposium on Languages in Biology and Medicine. Best paper award [.pdf]
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2010:
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Øvrelid, Lilja and Velldal, Erik and Oepen, Stephan. 2010. "Syntactic Scope Resolution in Uncertainty Analysis". In Proceedings of the 23rd International Conference on Computational Linguistics (Coling 2010).
[.pdf in ACL Anthology] [bibtex]
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Seeker, Wolfgang and Bohnet, Bernd and Øvrelid, Lilja and Kuhn, Jonas. 2010. "Informed ways of improving data-driven dependency parsing for German". In Proceedings of the 23rd International Conference on Computational Linguistics (Coling 2010).
[.pdf in ACL Anthology] [bibtex]
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Velldal, Erik and Øvrelid, Lilja and Oepen, Stephan. 2010. "Resolving Speculation: MaxEnt Cue Classification and Dependency-Based Scope Rules". In Proceedings of the 14th Conference on Computational Natural Language Learning (CoNLL-2010) shared task.
[pdf in ACL Anthology] [bibtex]
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Øvrelid, Lilja and Kuhn, Jonas and Spreyer, Kathrin. 2010. "Cross-framework parser stacking for data-driven dependency parsing". In TAL (Traitement Automatique des Langues) Special Issue on Machine Learning for NLP 50(3), eds. Isabelle Tellier and Mark Steedman. [Online version] [bibtex]
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Bouma, Gerlof and Øvrelid, Lilja and Kuhn, Jonas. 2010. "Towards a Large Parallel Corpus of Cleft Constructions". In Proceedings of the
7th International Conference on Language Resources and Evaluation (LREC'10).
[.pdf] [bibtex]
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Spreyer, Kathrin and Øvrelid, Lilja and Kuhn, Jonas. 2010. "Training Parsers on Partial Trees: A Cross-language Comparison". In Proceedings of the
7th International Conference on Language Resources and Evaluation (LREC'10).
[.pdf] [bibtex]
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2009:
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Øvrelid, Lilja and Kuhn, Jonas and Spreyer, Kathrin. 2009. "Improving Data-Driven Dependency Parsing Using Large-Scale LFG Grammars". In Proceedings of the 47th Annual Meeting of ACL and 4th International Joint Conference on NLP (ACL-IJCNLP 2009).
[.pdf] [bibtex]
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Øvrelid, Lilja. 2009. "Cross-lingual porting of distributional semantic classification". In Proceedings of the 17th Nordic Conference on Computational Linguistics (NODALIDA).
[.pdf] [bibtex]
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Øvrelid, Lilja. 2009. "Empirical evaluations of animacy annotation". In Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics (EACL).
[.pdf] [bibtex]
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2008:
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Øvrelid, Lilja. 2008. "Functional features in data-driven dependency parsing". In Proceedings of the International Lexical-Functional Grammar Annual Conference 2008, 413-433. [bibtex]
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Øvrelid, Lilja. 2008. "Finite matters. On verbal features in data-driven parsing of Swedish". In Proceedings of GoTAL, 6th International Conference on Natural Language Processing. ed: A. Ranta & B. Nordström, Springer LNCS/LNAI Volume 5221. [.pdf] [bibtex]
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Øvrelid, Lilja. 2008. "Linguistic features in data-driven dependency parsing". In Proceedings of the 12th Conference on Computational Natural Language Learning (CoNLL-2008), 25-32.[.pdf] [bibtex]
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2007:
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Øvrelid, Lilja and Nivre, Joakim. 2007. "When word order and part-of-speech tags are not enough - Swedish dependency parsing with rich linguistic features". In Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP), 447-451.[.pdf] [bibtex]
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2006:
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Øvrelid, Lilja. 2006. "Towards robust animacy classification using morphosyntactic distributional features". In Proceedings of EACL 2006 Student Research Workshop, Trento, Italy, 3.-7. April, 2006.[.pdf] [bibtex]
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2005:
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Øvrelid, Lilja. 2005. "Animacy classification based on morphosyntactic corpus frequencies: some experiments with Norwegian nouns" in Kiril Simov, Dimitar Kazakov and Petya Osenova (eds.): Proceedings of the workshop on Exploring Syntactically Annotated Corpora, held in conjunction with the Corpus Linguistics 2005 Conference in Birmingham, 14.-17. July, 2005. [.pdf] [bibtex]
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2004:
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Øvrelid, Lilja. 2004. "Disambiguation of syntactic functions in Norwegian: modeling variation in word order interpretations conditioned by animacy and definiteness" in Karlsson, Fred (ed.): Proceedings of the 20th Scandinavian Conference of Linguistics, Helsinki. 17 pages. [.pdf] [bibtex]
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Øvrelid, Lilja. 2004. "Subject or object? Syntactic disambiguation in Norwegian, stochastic Optimality Theory and application in an automatic system". MA thesis, Dept. of Linguistics, University of Oslo, Norway. 182 pages. [pdf]
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Conference presentations: |
Exploring the distribution of animacy: experiments on Norwegian. Presentation at Quantitative Investigations in Theoretical Linguistics 2 (QITL-2), Osnabrück, June 1st-2nd 2006. [slides (.pdf)]
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Subject or Object? Syntactic disambiguation in Norwegian. Presentation at Workshop on Optimality Theoretic Syntax 8 (WOTS-8), Berlin, aug. 2004. [presentation (.ps)]
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Subject or Object? Syntactic disambiguation in Norwegian. Presentation at Workshop on Optimality Theoretic Syntax 8 (WOTS-8), Berlin, aug. 2004. [presentation (.ps)]
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Automatisk gjenkjenning av subjekt og objektsfunksjon i norsk,
presented at Nomen Nescio meeting, Fefor, Norway, January 2003. [slides (.ppt)]
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Automatic Recognition of the Subject and Object in Norwegian,
presented at PaNoLa (Parsing Nordic Languages) network meeting, Ustadoset, Norway, 2002.
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