Erik Velldal

Image of Erik Velldal
Norwegian version of this page
Phone +47-22840119
Room 7461
Username
Visiting address Gaustadalléen 23B Ole-Johan Dahls hus 0373 OSLO
Postal address Postboks 1080 Blindern 0316 OSLO
Other affiliations Department for Informatics

Research Interests

Applications of machine learning to natural language processing.

Background

Associate professor at the Language Technology Group (LTG) at the Department of Informatics. Primarily working on empirical approaches to natural language processing. Completed the PhD degree as part of the LOGON machine translation project in 2008, with a thesis focusing on treebank-based estimation of statistical grammars for generation of English text.
 

Teaching

2015 (F): INF4820 — Algorithms for AI and Natural Language Processing
2015 (S): INF2810 — Functional Programming
2014 (F): INF5880 —  Master Seminar in Language Technology
2014 (S): INF2810 — Functional Programming
2013 (F): INF4820 — Algorithms for AI and Natural Language Processing
2013 (S): INF2810 — Functional Programming
2012 (F): INF4820 — Algorithms for AI and Natural Language Processing
2011 (S+F): INF5880 —  Master Seminar in Language Technology
2009 (F): INF4820 — Algorithms for AI and Natural Language Processing
2008 (S): ITSLP1100 — Introduction to Cognitive Sciences

 

Personal webpage

sailingkajsa.net and velldal.net/erik/.

 

 

Tags: Machine Learning, NLP, computational linguistics, AI, artificial intelligence, Natural Language Processing, language technology, language engineering

Publications

  • Enger, Martine; Velldal, Erik & Øvrelid, Lilja (2017). An open-source tool for negation detection: a maximum-margin approach, In Eduardo Blanco; Roser Morante & Roser Saurí (ed.),  Proceedings of the Workshop on Computational Semantics Beyond Events and Roles.  Association for Computational Linguistics.  ISBN 978-1-945626-49-4.  Artikkel W17-1810.  s 64 - 69 Show summary
  • Hohle, Petter; Øvrelid, Lilja & Velldal, Erik (2017). Optimizing a PoS Tagset for Norwegian Dependency Parsing, In Jörg Tiedemann (ed.),  Proceedings of the 21st Nordic Conference on Computational Linguistics (NoDaLiDa).  Linköping University Electronic Press.  ISBN 978-91-7685-601-7.  Article no. 017.  s 142 - 151 Show summary
  • Kutuzov, Andrei; Fares, Murhaf; Oepen, Stephan & Velldal, Erik (2017). Word vectors, reuse, and replicability: Towards a community repository of large-text resources, In Jörg Tiedemann (ed.),  Proceedings of the 21st Nordic Conference on Computational Linguistics, NoDaLiDa, 22-24 May 2017.  Linköping University Electronic Press.  ISBN 978-91-7685-601-7.  chapter.  s 271 - 276
  • Kutuzov, Andrei; Velldal, Erik & Øvrelid, Lilja (2017). Temporal dynamics of semantic relations in word embeddings: an application to predicting armed conflict participants, In  Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing.  Association for Computational Linguistics.  ISBN 978-1-945626-83-8.  chapter.  s 1825 - 1830
  • Kutuzov, Andrei; Velldal, Erik & Øvrelid, Lilja (2017). Tracing armed conflicts with diachronic word embedding models, In Tommaso Caselli (ed.),  Proceedings of the Events and Stories in the News Workshop.  Association for Computational Linguistics.  ISBN 978-1-945626-63-0.  Chapter.  s 31 - 36 Full text in Research Archive.
  • Sand, Heidi; Velldal, Erik & Øvrelid, Lilja (2017). Wordnet extension via word embeddings: Experiments on the Norwegian Wordnet, In Jörg Tiedemann (ed.),  Proceedings of the 21st Nordic Conference on Computational Linguistics (NoDaLiDa).  Linköping University Electronic Press.  ISBN 978-91-7685-601-7.  Article no. 042.  s 298 - 302 Show summary
  • Velldal, Erik; Øvrelid, Lilja & Hohle, Petter (2017). Joint UD Parsing of Norwegian Bokmål and Nynorsk, In Jörg Tiedemann (ed.),  Proceedings of the 21st Nordic Conference on Computational Linguistics (NoDaLiDa).  Linköping University Electronic Press.  ISBN 978-91-7685-601-7.  Article no. 001.  s 1 - 10 Show summary
  • Kutuzov, Andrei; Velldal, Erik & Øvrelid, Lilja (2016). Redefining part-of-speech classes with distributional semantic models, In  Proceedings of The 20th SIGNLL Conference on Computational Natural Language Learning (CoNLL).  Association for Computational Linguistics.  ISBN 978-1-945626-19-7.  Chapter.  s 115 - 125 Full text in Research Archive.
  • Oepen, Stephan; Read, Jonathon; Scheffler, Tatjana; Sidarenka, Uladzimir; Stede, Manfred; Velldal, Erik & Øvrelid, Lilja (2016). OPT: Oslo–Potsdam–Teesside. Pipelining Rules, Rankers, and Classifier Ensembles for Shallow Discourse Parsing, In Nianwen Xue (ed.),  Proceedings of the CoNLL-16 Shared Task.  Association for Computational Linguistics.  ISBN 978-1-932432-66-4.  Chapter.  s 20 - 26
  • Read, Jonathon; Velldal, Erik; Cavazza, Marc & Georg, Gersende (2016). A corpus of clinical practice guidelines annotated with the importance of recommendations, In  Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC 2016).  European Language Resources Association.  ISBN 978-2-9517408-9-1.  Kapittel.  s 1724 - 1731
  • Wester, Aksel Ladegård; Øvrelid, Lilja; Velldal, Erik & Hammer, Hugo Lewi (2016). Threat detection in online discussions, In  Proceedings of the 7th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis WASSA@NAACL-HLT 2016 (WASSA 2016).  Association for Computational Linguistics.  ISBN 978-1-941643-82-2.  Artikkel.  s 66 - 71 Full text in Research Archive.
  • Fares, Murhaf; Oepen, Stephan & Velldal, Erik (2015). Identifying Compounds: On The Role of Syntax, In Markus Dickinson; Erhard Hinrichs; Agnieszka Patejuk & Adam Przepiórkowski (ed.),  Proceedings of the Fourteenth Workshop on Treebanks and Linguistic Theories (TLT14).  Institute of Computer Science, Polish Academy of Sciences (IPI-PAN).  ISBN 978-83-63159-18-4.  Article.
  • Lien, Jostein; Velldal, Erik & Øvrelid, Lilja (2015). Improving cross-domain dependency parsing with dependency-derived clusters, In Beáta Megyesi (ed.),  Proceedings of the 20th Nordic Conference of Computational Linguistics.  Linköping University Electronic Press.  ISBN 978-91-7519-098-3.  Artikkel.  s 117 - 126 Full text in Research Archive.
  • Høyland, Bjørn; Godbout, Jean-François; Lapponi, Emanuele & Velldal, Erik (2014). Predicting Party Affiliations from European Parliament Debates, In Cristian Danescu-Niculescu-Miz; Jacob Eisenstein; Kathleen McKeown & Noah Smith (ed.),  Proceedings of the ACL 2014 Workshop on Language Technologies and Computational Social Science.  Association for Computational Linguistics.  ISBN 978-1-941643-10-5.  artikkel.  s 56 - 60
  • Lapponi, Emanuele; Velldal, Erik; Oepen, Stephan & Knudsen, Rune Lain (2014). Off-Road LAF: Encoding and Processing Annotations in NLP Workflows, In Nicoletta Calzolari; Khalid Choukri; Thierry Declerck; Hrafn Loftsson; Bente Maegaard; Joseph Mariani; Asuncion Moreno; Jan Odijk & Stelios Piperidis (ed.),  Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14).  European Language Resources Association.  ISBN 978-2-9517408-8-4.  artikkel.  s 4578 - 4584
  • Lapponi, Emanuele; Velldal, Erik; Vazov, Nikolay Aleksandrov & Oepen, Stephan (2013). HPC-ready Language Analysis for Human Beings, In Stephan Oepen; Kristin Hagen & Janne Bondi Johannessen (ed.),  Proceedings of the 19th Nordic Conference of Computational Linguistics (NODALIDA 2013).  Linköping University Electronic Press.  ISBN 978-91-7519-589-6.  article.  s 447 - 452 Full text in Research Archive.
  • Lapponi, Emanuele; Velldal, Erik; Vazov, Nikolay Aleksandrov & Oepen, Stephan (2013). Towards large-scale language analysis in the cloud, In Koenraad De Smedt; Lars Borin; Krister Lindén; Bente Maegaard; Eiríkur Rögnvaldsson & Kadri Vider (ed.),  Proceedings of the workshop on Nordic language research infrastructure at NODALIDA 2013.  Linköping University Electronic Press.  ISBN 978-91-7519-585-8.  article.  s 1 - 10 Full text in Research Archive.
  • Lapponi, Emanuele; Velldal, Erik; Øvrelid, Lilja & Read, Jonathon (2012). UiO2: Sequence-labeling Negation Using Dependency Features, In Eneko Agirre; Johan Bos & Mona Diab (ed.),  *SEM 2012: The First Joint Conference on Lexical and Computational Semantics --- Volume 1: Proceedings of the main conference and the shared task.  Association for Computational Linguistics.  ISBN 978-1-937284-21-3.  paper.  s 319 - 327
  • Read, Jonathon; Velldal, Erik & Øvrelid, Lilja (2012). Labeling Emotions in Suicide Notes: Cost-Sensitive Learning with Heterogeneous Features. Biomedical Informatics Insights.  ISSN 1178-2226.  5, s 99- 103 . doi: 10.4137/BII.S8930
  • Read, Jonathon; Velldal, Erik & Øvrelid, Lilja (2012). Topic classification for Suicidology. Journal of Computing Science and Engineering.  ISSN 1976-4677.  6(2), s 143- 150 . doi: 10.5626/JCSE.2012.6.2.143
  • Read, Jonathon; Velldal, Erik; Øvrelid, Lilja & Oepen, Stephan (2012). UiO1: Constituent-Based Discriminative Ranking for Negation Resolution, In Eneko Agirre; Johan Bos & Mona Diab (ed.),  *SEM 2012: The First Joint Conference on Lexical and Computational Semantics --- Volume 1: Proceedings of the main conference and the shared task.  Association for Computational Linguistics.  ISBN 978-1-937284-21-3.  paper.  s 310 - 318
  • Velldal, Erik & Read, Jonathon (2012). Factuality Detection on the Cheap: Inferring Factuality for Increased Precision in Detecting Negated Events, In Roser Morante & Caroline Sporleder (ed.),  Proceedings of the Workshop on Extra-Propositional Aspects of Meaning in Computational Linguistics, ExProM '12.  Association for Computational Linguistics.  ISBN 978-1-937284-34-3.  paper.  s 28 - 36
  • Velldal, Erik; Øvrelid, Lilja; Read, Jonathon & Oepen, Stephan (2012). Speculation and Negation: Rules, Rankers, and the Role of Syntax. Computational linguistics - Association for Computational Linguistics (Print).  ISSN 0891-2017.  38(2), s 369- 410 . doi: 10.1162/COLI_a_00126 Show summary
  • Bond, Francis; Oepen, Stephan; Nichols, Eric; Flickinger, Dan; Velldal, Erik & Haugereid, Petter (2011). Deep open-source machine translation. Machine Translation.  ISSN 0922-6567.  25(2), s 87- 105 . doi: 10.1007/s10590-011-9099-4
  • Read, Jonathon; Velldal, Erik; Oepen, Stephan & Øvrelid, Lilja (2011). Resolving speculation and negation scope in biomedical articles with a syntactic constituent ranker, In Helena Hong Gao & Minghui Dong (ed.),  Proceedings of the 25th Pacific Asia Conference on Language, Information and Computation, and the Fourth International Symposium on Languages in Biology and Medicine.  Pacific Asia Conference on Language, Information and Computation.  ISBN 978-4-905166-02-3.  Conference Paper.
  • Read, Jonathon; Velldal, Erik & Øvrelid, Lilja (2011). Topic classification for suicidology, In Helena Hong Gao & Minghui Dong (ed.),  Proceedings of the 25th Pacific Asia Conference on Language, Information and Computation, and the Fourth International Symposium on Languages in Biology and Medicine.  Pacific Asia Conference on Language, Information and Computation.  ISBN 978-4-905166-02-3.  Conference Paper.  s 78 - 85
  • Velldal, Erik (2011). Predicting Speculation: A Simple Disambiguation Approach to Hedge Detection in Biomedical Literature. Journal of Biomedical Semantics.  ISSN 2041-1480.  2
  • Velldal, Erik (2011). Random Indexing Re-Hashed. NEALT Proceedings Series.  ISSN 1736-6305.  11, s 224- 229
  • Velldal, Erik; Øvrelid, Lilja & Oepen, Stephan (2010). Resolving Speculation: MaxEnt Cue Classification and Dependency-Based Scope Rules, In Richárd Farkas (ed.),  Proceedings of the Fourteenth Conference on Computational Natural Language Learning -- Shared Task.  Association for Computational Linguistics.  ISBN 978-1-932432-84-8.  artikkel nr. 7.  s 48 - 55
  • Øvrelid, Lilja; Velldal, Erik & Oepen, Stephan (2010). Syntactic Scope Resolution in Uncertainty Analysis, In Dan Jurafsky (ed.),  Proceedings of the 23rd International Conference on Computational Linguistics (Coling 2010).  Daheng Electronic Press.  ISBN 978-7-900268-00-6.  artikkel.  s 1379 - 1387
  • Oepen, Stephan; Velldal, Erik; Lønning, Jan Tore; Meurer, Paul; Rosén, Victoria & Flickinger, Dan (2007). Towards Hybrid Quality-Oriented Machine Translation. On Linguistics and Probabilities in MT, In Andy Way & Barbara Gawronska (ed.),  Proceedings of the 11th International Conference on Theoretical Issues in Machine Translation.  Skövde University Studies in Informatics.  ISBN 978-91-977095-0-7.  Chapter 18.  s 144 - 153
  • Velldal, Erik & Oepen, Stephan (2006). Statistical Ranking in Tactical Generation, In Dan Jurafsky & Eric Gaussier (ed.),  Proceedings of the 2006 Conference on Empirical Methods in Natural Language Processing.  Association for Computational Linguistics.  ISBN 1-932432-73-6.  KAPITTEL.  s 517 - 525
  • Velldal, Erik & Oepen, Stephan (2005). Maximum Entropy Models for Realization Ranking, In Jun-ichi Tsujii (ed.),  Proceedings of the 10th Machine Translation Summit.  Asia-Pacific Association for Machine Translation.  ISBN 974-7431-26-2.  KAPITTEL.

View all works in Cristin

  • Fares, Murhaf; Oepen, Stephan & Velldal, Erik (2015). Identifying Compounds: On The Role of Syntax.
  • Lapponi, Emanuele; Oepen, Stephan; Skjærholt, Arne & Velldal, Erik (2015). LAP: The CLARINO Language Analysis Portal.
  • Read, Jonathon & Velldal, Erik (2011). Labeling emotions in suicide notes: Cost-sensitive learning with heterogeneous features.
  • Velldal, Erik (2011). Random Indexing Re-Hashed.
  • Velldal, Erik (2010). Detecting Uncertainty in Biomedical Literature: A Simple Disambiguation Approach Using Sparse Random Indexing.
  • Velldal, Erik (2008). Empirical Realization Ranking. Acta Humaniora. 349. Show summary
  • Velldal, Erik (2005). A Fuzzy Clustering Approach to Word Sense Discrimination.
  • Oepen, Stephan; Dyvik, Helge; Lønning, Jan Tore; Velldal, Erik; Beermann, Dorothee; Carroll, John; Flickinger, Dan; Hellan, Lars; Johannessen, Janne Bondi; Meurer, Paul; Nordgård, Torbjørn & Rosén, Victoria (2004). Som å kappete med trollet? Towards MRS-Based Norwegian-English Machine Translation.
  • Velldal, Erik; Oepen, Stephan & Flickinger, Dan (2004). Paraphrasing Treebanks for Stochastic Realization Ranking.
  • Lønning, Jan Tore; Oepen, Stephan; Beermann, Dorothee; Hellan, Lars; Carroll, John; Dyvik, Helge; Flickinger, Dan; Johannessen, Janne Bondi; Meurer, Paul; Nordgård, Torbjørn; Rosén, Victoria & Velldal, Erik (2004). LOGON - A Norwegian MT Effort.

View all works in Cristin

Published Nov. 4, 2010 2:24 PM - Last modified Sep. 24, 2015 11:56 AM