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Constrained Arc-Eager Dependency Parsing
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Linguistics and Philology.
2014 (English)In: Computational linguistics - Association for Computational Linguistics (Print), ISSN 0891-2017, E-ISSN 1530-9312, Vol. 40, no 2, 249-257 p.Article in journal (Refereed) Published
Abstract [en]

Arc-eager dependency parsers process sentences in a single left-to-right pass over the input and have linear time complexity with greedy decoding or beam search. We show how such parsers can be constrained to respect two different types of conditions on the output dependency graph: span constraints, which require certain spans to correspond to subtrees of the graph, and arc constraints, which require certain arcs to be present in the graph. The constraints are incorporated into the arc-eager transition system as a set of preconditions for each transition and preserve the linear time complexity of the parser.

Place, publisher, year, edition, pages
2014. Vol. 40, no 2, 249-257 p.
National Category
Computer and Information Science General Language Studies and Linguistics
URN: urn:nbn:se:uu:diva-229456DOI: 10.1162/COLI_a_00184ISI: 000338196000001OAI: oai:DiVA.org:uu-229456DiVA: diva2:736620
Available from: 2014-08-07 Created: 2014-08-07 Last updated: 2014-08-07Bibliographically approved

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Nivre, Joakim
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Department of Linguistics and Philology
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Computational linguistics - Association for Computational Linguistics (Print)
Computer and Information ScienceGeneral Language Studies and Linguistics

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