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Treebank Grammar Techniques for Non-Projective Dependency Parsing
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Linguistics and Philology. (Datorlingvistik)ORCID iD: 0000-0002-2492-9872
Department of Information Engineering, University of Padua.
2009 (English)In: Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics, 2009, 478-486 p.Conference paper (Refereed)
Abstract [en]

An open problem in dependency parsing is the accurate and efficient treatment of non-projective structures. We propose to attack this problem using chart-parsing algorithms developed for mildly context-sensitive grammar formalisms. In this paper, we provide two key tools for this approach. First, we show how to reduce non-projective dependency parsing to parsing with Linear Context-Free Rewriting Systems (LCFRS), by presenting a technique for extracting LCFRS from dependency treebanks. For efficient parsing, the extracted grammars need to be transformed in order to minimize the number of nonterminal symbols per production. Our second contribution is an algorithm that computes this transformation for a large, empirically relevant class of grammars.

Place, publisher, year, edition, pages
2009. 478-486 p.
, Association for Computational Linguistics. European Chapter (EACL), ISSN 1525-2450
National Category
General Language Studies and Linguistics
Research subject
Computational Linguistics
URN: urn:nbn:se:uu:diva-100712OAI: oai:DiVA.org:uu-100712DiVA: diva2:210869
Twelfth Conference of the European Chapter of the Association for Computational Linguistics (EACL), 30 March – 3 April 2009 Megaron Athens International Conference Centre Athens, Greece
Available from: 2009-04-06 Created: 2009-04-06 Last updated: 2013-07-17

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Kuhlmann, Marco
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