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Simple semi-supervised dependency parsing
dc.contributor.author | Koo, Terry |
dc.contributor.author | Carreras Pérez, Xavier |
dc.contributor.author | Collins, Michael |
dc.date.accessioned | 2010-10-19T11:42:07Z |
dc.date.available | 2010-10-19T11:42:07Z |
dc.date.created | 2008 |
dc.date.issued | 2008 |
dc.identifier.citation | Koo, T.; Carreras, X.; Collins, M. Simple semi-supervised dependency parsing. A: Annual Meeting of the Association for Computational Linguistics. "46th Annual Meeting of the Association for Computational Linguistics". Columbus, Ohio: 2008, p. 595-603. |
dc.identifier.uri | http://hdl.handle.net/2117/9808 |
dc.description.abstract | We present a simple and effective semisupervised method for training dependency parsers. We focus on the problem of lexical representation, introducing features that incorporate word clusters derived from a large unannotated corpus. We demonstrate the effectiveness of the approach in a series of dependency parsing experiments on the Penn Treebank and Prague Dependency Treebank, and we show that the cluster-based features yield substantial gains in performance across a wide range of conditions. For example, in the case of English unlabeled second-order parsing, we improve from a baseline accuracy of 92:02% to 93:16%, and in the case of Czech unlabeled second-order parsing, we improve from a baseline accuracy of 86:13% to 87:13%. In addition, we demonstrate that our method also improves performance when small amounts of training data are available, and can roughly halve the amount of supervised data required to reach a desired level of performance. |
dc.format.extent | 9 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Informàtica::Intel·ligència artificial::Llenguatge natural |
dc.subject.lcsh | Computational linguistics |
dc.title | Simple semi-supervised dependency parsing |
dc.type | Conference report |
dc.subject.lemac | Lingüística computacional |
dc.contributor.group | Universitat Politècnica de Catalunya. GPLN - Grup de Processament del Llenguatge Natural |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://aclweb.org/anthology-new/P/P08/P08-1068.pdf |
dc.rights.access | Open Access |
local.identifier.drac | 2752817 |
dc.description.version | Postprint (author’s final draft) |
local.citation.author | Koo, T.; Carreras, X.; Collins, M. |
local.citation.contributor | Annual Meeting of the Association for Computational Linguistics |
local.citation.pubplace | Columbus, Ohio |
local.citation.publicationName | 46th Annual Meeting of the Association for Computational Linguistics |
local.citation.startingPage | 595 |
local.citation.endingPage | 603 |