TAILIEUCHUNG - Báo cáo khoa học: "Semantic Interpretation Using KL-ONE"

This paper presents extensions to the work of Bobrow and Webber [Bobrow&Webber 80a, Bobrow&Webber 80b] on semantic interpretation using KL-ONE to represent knowledge. The approach is based on an extended case frame formalism applicable to all types of phrases, not just clauses. The frames are used to recognize semantically acceptable phrases, identify their structure, and, relate them to their meaning representation through translation rules. Approaches are presented for generating KL-ONE structures as the meaning of a sentence, for capturing semantic generalizations through abstract case frames, and for handling pronouns and relative clauses. . | Semantic Interpretation Using KL-ONE1 Norman K. Sondheimer usc lnformation Sciences Institute Marina del Rey California 90292 USA Ralph M. Weischedel Dept of Computer Information Sciences University of Delaware Newark Delaware 19716 USA Robert J. Bobrow Bolt Beranek and Newman Inc. Cambridge Massachusetts 02238 USA Abstract This paper presents extensions to the work of Bobrow and Webber Bobrow Webber 80a Bobrow Webber 80b on semantic interpretation using KL-ONE to represent knowledge. The approach is based on an extended case frame formalism applicable to all types of phrases not just clauses. The frames are used to recognize semantically acceptable phrases identify their structure and relate them to their meaning representation through translation rules. Approaches are presented for generating KL-ONE structures as the meaning of a sentence for capturing semantic generalizations through abstract case frames and for handling pronouns and relative clauses. 1. Introduction Semantic interpretation is the process of relating the syntactic analysis of an utterance to its meaning representation. Syntactic analyses associate immediate constituents with their syntactic function in a matrix constituent . the sentence Send him the message that arrived yesterday. has a syntactic analysis in RUS Bobrow 78 as shown in Figure The elements of the meaning representation are the objects events and states of affairs perceived by the speaker. The relationships between these entities will be called semantic functions. The basis for our semantic processing scheme is a familiar one based on that of case frames used to describe clause structure Bruce 75 . Our case frames are used for all phrase types clauses noun phrases prepositional phrases etc. We choose to represent both the syntactic and semantic analyses in the knowledge representation language KL-ONE Brachman Schmolze 82 Schmolze Lipkis 83 Moser 83 . The essential properties for the meaning representations constructed are .

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