Computer Science – Computation and Language
Scientific paper
1996-09-24
COLING90: Proceedings 13th International Conference on Computational Linguistics, Helsinki
Computer Science
Computation and Language
7 pages, uses twocolumn
Scientific paper
In this paper we propose a computational treatment of the resolution of zero pronouns in Japanese discourse, using an adaptation of the centering algorithm. We are able to factor language-specific dependencies into one parameter of the centering algorithm. Previous analyses have stipulated that a zero pronoun and its cospecifier must share a grammatical function property such as {\sc Subject} or {\sc NonSubject}. We show that this property-sharing stipulation is unneeded. In addition we propose the notion of {\sc topic ambiguity} within the centering framework, which predicts some ambiguities that occur in Japanese discourse. This analysis has implications for the design of language-independent discourse modules for Natural Language systems. The centering algorithm has been implemented in an HPSG Natural Language system with both English and Japanese grammars.
Cote Sharon
Iida Masayo
Walker Marilyn
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