tailieunhanh - Báo cáo khoa học: "SOMELINGUISTIC ASPECTS FORAUTOMATIC TEXT UNDERSTANDING"

This paper proposes a s y s t e m of mapping classes of syntactic structures as instruments for automatic text understanding. The s y s t e m illustrated in Japanese consists of a set of verb classes and i nfo r m a t i o n on mapping them together with noun phrases, tense and aspect. The system. having information on direction of possible inferences between the verb classes with i n f o r m a t i o n on tense and aspect, is s u p p o s e d to be. | SOME LINGUISTIC ASPECTS FOR AUTOMATIC TEXT UNDERSTANDING Yutaka Kusanagi Institute of Literature and Linguistics University of Tsukuba Sakura-mura Ibarakl 305 JAPAN ABSTRACT This paper proposes a system of mapping classes of syntactic structures as instruments for automatic text understanding. The system illustrated in Japanese consists of a set of verb classes and information on mapping them together with noun phrases tense and aspect. The system. having information on direction of possible inferences between the verb classes with information on tense and aspect is supposed to be utilized for reasoning in automatic text understanding. I. INTRODUCTION The purpose of this paper is to propose a system of mapping classes of syntactic structures as instruments for automatic text understanding. The system consists of a set of verb classes and information on mapping them together with noun phrases tense and aspect and is supposed to be utilized for Inference in automatic text understanding. The language used for illustration of the system Is Japanese. There is a tendency for non-syntactlc analysers and semantic grammars In automatic text understanding. However this proposal is motivated by the fact that syntactic structures once analyzed and classified in terms of semantic relatedness provide much Information for understanding. This Is supported by the fact that human beings use syntactically related sentences when they ask questions about texts. The system we are proposing has the following elements 1 Verb classes. 2 Mapping of noun phrases between or among some verb classes. 3 Direction of possible inference between the classes with information on tense and aspect. Our experiment in which subjects are asked to make true-false questions about certain texts revealed that native speakers think that they understand texts by deducting sentences lexically or semantically related. For Instance a human being relates questions such as Did Mary go to a theater to a sentence in .