TAILIEUCHUNG - Báo cáo khoa học: "DELIMITEDNESS AND TRAJECTORY-OF-MOTION EVENTS"

The first part of the paper develops a novel, sortally-based approach to the problem of aspectual composition. The account is argued to be superior on both empirical and computational grounds to previous semantic approaches relying on referential homogeneity tests. While the account is restricted to manner-of-motion verbs, it does cover their interaction with mass terms, amount phrases, locative PPs, and distance, frequency, and temporal modifiers. | Delimitedness and Trajectory-of-Motion Events Michael White Department of Computer and Information Science University of Pennsylvania Philadelphia PA USA Abstract The first part of the paper develops a novel sortally-based approach to the problem of aspectual composition. The account is argued to be superior on both empirical and computational grounds to previous semantic approaches relying on referential homogeneity tests. While the account is restricted to manner-of-motion verbs it does cover their interaction with mass terms amount phrases locative PPs and distance frequency and temporal modifiers. The second part of the paper describes an implemented system based on the theoretical treatment which determines whether a specified sequence of events is or is not possible under varying situationally supplied constraints given certain restrictive and simplifying assumptions. Briefly the system extracts a set of constraint equations from the derived logical forms and solves them according to a best-value metric. Three particular limitations of the system and possible ways of addressing them are discussed in the conclusion. 1 Introduction Ever since Verkuyl 1972 first observed that the aspectual class of a sentence depends not only on its main verb as in Vendler 1967 but also on its verbal The author gratefully acknowledges the helpful comments of Jeff Siskind Mark Steedman Matthew Stone and Christy Doran as well as the support of DARPA N00014-90-J-1863 ARO DAAL03-89-C-0031 NSF IRI 90-16592 Ben Franklin . arguments and modifiers numerous researchers have proposed accounts of this the problem of ASPECTUAL COMPOSITION. Of course the ultimate aims of these studies have never been to determine the aspectual class of an expression per se clearly a theory-internal notion but rather to predict the outcomes of certain aspect-related syntactic and semantic tests cf. Dowty 1979 Verkuyl 1989 . Likewise the present paper focuses on these .

• Báo cáo khoa học
• DELIMITEDNESS AND TRAJECTORY OF MOTION EVENTS
• Michael White
• Long Papers
• scientific reports
• model language
• process natural language
• Dialog Control
• Natural Language System
• Dialog Control in a Natural Language System
• Expanding the Horizons
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• COMPUTER INTEBFACE DESIGN MURRAY TUROFF DEPARTMENT OF COMPUTER
• IiVFORMATION SCIENCE IIEW JERSEY INSTITUTE OF TECHNOLOGY
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• Hendrlx and William H
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• A LOGIC PROGRAMMING PERSPECTIVE
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• PLANNING NATURAL LANGUAGE
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