Minimally Lexicalized Dependency Parsing

Dependency structures do not have the information of phrase categories in phrase structure grammar. Thus, dependency parsing relies heavily on the lexical information of words. This paper discusses our investigation into the effectiveness of lexicalization in dependency parsing. Specifically, by restricting the degree of lexicalization in the training phase of a parser, we examine the change in the accuracy of dependency relations. Experimental results indicate that minimal or low lexicalization is sufficient for parsing accuracy.

• Type: Conference
• Year: 2007
• Where: ACL
• Authors: Daisuke Kawahara, Kiyotaka Uchimoto
• Keywords: ACL 2007, Computational Linguistics, Dependency Parsing, Dependency Parsing Relies, Dependency Structures