tailieunhanh - Báo cáo khoa học: "Interpretation as Abduction"

An approach to abductive inference developed in the TACITUS project has resulted in a dramatic simplification of how the problem of interpreting texts is conceptualized. Its use in solving the local pragmatics problems of reference, compound nominals, syntactic ambiguity, and metonymy is described and illustrated. It also suggests an elegant and thorough integration of syntax, semantics, and pragmatics. | Interpretation as Abduction Jerry R. Hobbs Mark Stickel Paul Martin and Douglas Edwards Artificial Intelligence Center SRI International Abstract An approach to abductive inference developed in the TACITUS project has resulted in a dramatic simplification of how the problem of interpreting texts is conceptualized. Its use in solving the local pragmatics problems of reference compound nominals syntactic ambiguity and metonymy is described and illustrated. It also suggests an elegant and thorough integration of syntax semantics and pragmatics. 1 Introduction Abductive inference is inference to the best explanation. The process of interpreting sentences in discourse can be viewed as the process of providing the best explanation of why the sentences would be true. In the TACITUS Project at SRI we have developed a scheme for abductive inference that yields a significant simplification in the description of such interpretation processes and a significant extension of the range of phenomena that can be captured. It has been implemented in the TACITUS System Stickel 1982 Hobbs 1986 Hobbs and Martin 1987 and has been and is being used to solve a variety of interpretation problems in casualty reports which are messages about breakdowns in machinery as well as in other It is well-known that people understand discourse so well because they know so much. Accordingly the aim of the TACITUS Project has been to investigate how knowledge is used in the interpretation of discourse. This has involved building a large knowledge base of commonsense and domain knowledge see Hobbs et al. 1986 and developing procedures for using this knowledge for the interpretation of discourse. In the latter effort we have concentrated on problems in local pragmatics specifically the problems of reference resolution the interpretation of compound nom-inals the resolution of some kinds of syntactic ambiguity and metonymy resolution. Our approach to these problems is the focus of this paper. In .

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