Paper: An Empirical Study On Thematic Knowledge Acquisition Based On Syntactic Clues And Heuristics

ACL ID P93-1033
Title An Empirical Study On Thematic Knowledge Acquisition Based On Syntactic Clues And Heuristics
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 1993
Authors

Thematic knowledge is a basis of semamic interpreta- tion. In this paper, we propose an acquisition method to acquire thematic knowledge by exploiting syntactic clues from training sentences. The syntactic clues, which may be easily collected by most existing syn- tactic processors, reduce the hypothesis space of the thematic roles. The ambiguities may be further resolved by the evidences either from a trainer or from a large corpus. A set of heurist-cs based on linguistic constraints is employed to guide the ambi- guity resolution process. When a train,-.r is available, the system generates new sentences wtose thematic validities can be justified by the trainer. When a large corpus is available, the thematic validity may be justi- fied by observing the sentences in the corpus. Using this ...