TAILIEUCHUNG - Báo cáo khoa học: "A Semantic Analyzer for English Sentences"

A system for semantic analysis of a wide range of English sentence forms is described. The system has been implemented in LISP on the System Development Corporation (SDC) time-shared computer. Semantic analysis is defined as the selection of a unique word sense for each word in a natural-language sentence string and its bracketing in an underlying deep structure of that string. | Mechanical Translation and Computational Linguistics nos. 1 and 2 March and June 1968 A Semantic Analyzer for English Sentences by Robert F. Simmons and John F. Burger System Development Corporation Santa Monica California A system for semantic analysis of a wide range of English sentence forms is described. The system has been implemented in LISP on the System Development Corporation SDC time-shared computer. Semantic analysis is defined as the selection of a unique word sense for each word in a natural-language sentence string and its bracketing in an underlying deep structure of that string. The conclusion is drawn that a semantic analyzer differs from a syntactic analyzer primarily in requiring in addition to syntactic word-classes a large set of semantic word-classes. A second conclusion is that the use of semantic event forms eliminates the need for selection restrictions and projection rules as posited by Katz. A discussion is included of the relations of elements of this system to the elements of the Katz theory. I. Introduction Attempts to understand natural languages sufficiently well to enable the construction of language processors that can automatically translate answer questions write essays etc. have had frequent publication in the computer sciences literature of the last decade. This work has been surveyed by Simmons 1 2 by Kuno 3 and by Bobrow Fraser and Quillian 4 . These surveys agree in showing 1 that syntactic analysis by computer is fairly well understood though usually inadequately realized and 2 that semantic analysis is in its infancy as a formal discipline although some programs manage to disentangle a limited set of semantic complexities in English statements. An inescapable conclusion deriving from these surveys is that no reasonably general language processor can be developed until we can deal effectively with the notion of meaning and the manner in which it is communicated among humans via language strings. Several recent .

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