tailieunhanh - Báo cáo khoa học: "REAPING THE BENEFITS OF INTERACTIVE AND SEMANTICS*"

Semantic feedback is an important source of information that a parser could use to deal with local ambiguities in syntax. However, it is difficult to devise a systematic communication mechanism for interactive syntax and semantics. In this article, I propose a variant of left-corner parsing to define the points at which syntax and semantics should interact, an account of grammatical relations and thematic roles to define the content of the communication, and a conflict resolution strategy based on independent preferences from syntax and semantics. The resulting interactive model has been implemented in a program called COMPERE and shown to. | REAPING THE BENEFITS OF INTERACTIVE SYNTAX AND SEMANTICS Kavi Mahesh Georgia Institute of Technology College of Computing Atlanta GA 30332-0280 USA Internet mahesh@ Abstract Semantic feedback is an important source of information that a parser could use to deal with local ambiguities in syntax. However it is difficult to devise a systematic communication mechanism for interactive syntax and semantics. In this article I propose a variant of left-comer parsing to define the points at which syntax and semantics should interact an account of grammatical relations and thematic roles to define the content of the communication and a conflict resolution strategy based on independent preferences from syntax and semantics. The resulting interactive model has been implemented in a program called COMPERE and shown to account for a wide variety of psycholinguistic data on structured and lexical ambiguities. INTRODUCTION The focus of investigation in language processing research has moved away from the issue of semantic feedback to syntactic processing primarily due to the difficulty of getting the communication between syntax and semantics to work in a clean and systematic way. However it is unquestionable that semantics does in fact provide useful information which when fed back to syntax could help eliminate many an alternative syntactic structure. In this article I address three issues in the communication mechanism between syntax and semantics and provide a complete and promising solution to the problem of interactive syntactic and semantic processing. Since natural languages are replete with ambiguities at all levels it appears intuitively that a processor with incremental interaction between the levels of syntax and semantics which makes the best and immediate use of both syntactic and semantic information to eliminate many alternatives would win over either a syntax-first or a semantics-first mechanism. In order to devise such an interactive mechanism one .