On HPSG-Based Japanese Grammar

OHTANI AKIRA, MIYATA TAKASHI, MATSUMOTO YUJI

doi:10.5715/jnlp.7.5_19

A parser based on declarative grammar that deals with various aspects of language is indispensable for natural language processing. For constructing a practical grammar system, we develop unification-based Japanese phrase structure grammar, NAIST JPSG, which is an implementation of ideas from recent developments in Head-driven Phrase Structure Grammar. The principles, schemata and features are designed through considering various aspects of Japanese and describing regularities among them as a set of local constraints. We then devote our discussion to the analysis of language-specific phenomena, the distribution of case particles, the thematic locality of sa-hen dô-si constructions, and the modification of case-marked adnominal phrase in rental syû-syoku clauses, with main focus on their specific lexical information.(i) Whether case particles can appear or not is accounted for under the type-hierarchical case feature, which is a part of the feature system for describing linguistic objects.(ii) Sa-hen dô-si constructions include simple thematic relation in spite of their morphologically complex status. Lexical description and general mechanism as unification can reconcile such mismatch.(iii) Through the consultation of corpus, some classes of ambiguities on modifier-modifiee relation in rental syû-syoku clause can be reduced by introducing a predicative morpheme.

On HPSG-Based Japanese Grammar

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