A compositional approach toward dynamic phrasal thesaurus

Authors:
Atsushi Fujita;Shuhei Kato;Naoki Kato;Satoshi Sato
Affiliations:
Nagoya University;Nagoya University;Nagoya University;Nagoya University
Venue:
RTE '07 Proceedings of the ACL-PASCAL Workshop on Textual Entailment and Paraphrasing
Year:
2007

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Abstract

To enhance the technology for computing semantic equivalence, we introduce the notion of phrasal thesaurus which is a natural extension of conventional word-based the saurus. Among a variety of phrases that conveys the same meaning, i.e., paraphrases, we focus on syntactic variants that are compositionally explainable using a small number of atomic knowledge, and develop a system which dynamically generates such variants. This paper describes the proposed system and three sorts of knowledge developed for dynamic phrasal thesaurus in Japanese: (i) transformation pattern, (ii) generation function, and (iii) lexical function.