TAILIEUCHUNG - Báo cáo khoa học: "Discourse Pragmatics and Ellipsis Resolution in Task-Oriented Natural Language Interfaces"

This paper reviews discourse phenomena that occur frequently in dialogs, reporting on a~n empirical study that demonstrates the necessity of handling ellipsis, anaphora, extragrammaticality, inter-sentential metalanguage, and other abbreviatory devices in order to achieve convivial user interaction. Invariably, users prefer to generate terse or fragmentary utterances instead of longer, more complete "standalone" expressions, even when given clear instructions tO the contrary. The XCALIBUR exbert system interface is designed to meet these needs, including generalized ellipsis resolution by means of a rule-based caseframe method superior tO previous semantic grammar approaches. . | Discourse Pragmatics and Ellipsis Resolution in Task-Oriented Natural Language Interfaces Jaime G. Carbonell Computer Science Department Carnegie-Mellon University Pittsburgh PA 15213 Abstract This paper reviews discourse phenomena that occur frequently in task-oriented man-machine dialogs reporting on án empirical study that demonstrates the necessity of handling ellipsis anaphora extragrammaticality inter-sentential metalanguage and other abbreviatory devices in order to achieve convivial user interaction. Invariably users prefer to generate terse or fragmentary utterances instead of longer more complete standalone1 expressions even when given clear instructions to the contrary. The XCALI8UR expert system interface is designed to meet these needs including generalized ellipsis resolution by means of a rule-based caseframe method superior to previous semantic grammar approaches. 1. A Summary of Task-Oriented Discourse Phenomena Natural language discourse exhibits several intriguing phenomena that defy definitive linguistic analysis and general computational solutions. However some progress has been made in developing tractable computational solutions to simplified version of phenomena such as ellipsis and anaphora resolution 20 10 21 . This paper reviews discourse phenomena that arise in task-oriented dialogs with responsive agents such as expert systems rather than purely passive data base query systems outlines the results of an empirical study and presents our method for handling generalized ellipsis resolution in the XCALIBUR expert system interface. With the exception of inter-sentential metalanguage and to a lesser degree extragrammaticality the significance of the phenomena listed below have long been recognized and documented in the computational linguistics literature. Anaphora - Interactive task-oriented dialogs invite the use of anaphora much more so than simpler data base query situations. Definite noun phrases - As Grosz 6 noted resolving the referent

• Báo cáo khoa học
• Discourse Pragmatics
• Ellipsis Resolution
• Task Oriented Natural Language Interfaces
• scientific reports
• model language
• process natural language
• Exploring Pragmatics
• Exploring Pragmatics A coursebook
• Incitement in legal discourse
• Verbal irony
• Speech act stage metaphor
• Clinical pragmatics revisited
• Dialog Control
• Natural Language System
• Dialog Control in a Natural Language System
• Expanding the Horizons
• Natural Language Interfaces
• Phil Hayes
• PROSPECTS OR PRACTICAL
• NATURAL LANGUAGE SYSTEMS
• Workshops
• NATURAL LANGUAGE
• INTERACTION WITH MACHINES
• Long Papers
• COMPUTER INTEBFACE DESIGN MURRAY TUROFF DEPARTMENT OF COMPUTER
• IiVFORMATION SCIENCE IIEW JERSEY INSTITUTE OF TECHNOLOGY
• EVALUATION OF NATURAL LANGUAGE
• INTERFACES TO DATABASE SYSTEMS
• A PANEL DISCUSSION
• database query system
• J
• Norwood Crout
• INTERFACES TO DATA BASE SYSTEMS
• Bozena Henisz
• INTERPRETING NATURAL LANGUAGE
• DATABASE UPDATES
• S
• Jermld Kaplan Jim David
• TRANSPORTABLE NATURAL LANGUAGE
• INTERFACES TO DATABASES
• Gary G
• Hendrlx and William H
• Lewis
• DATABASES THEORETICAL
• TECHNICAL ISSUES
• TRANSPORTABLE NATURAL LANGUAGE INTERFACES
• PROBLEMS AND TECHNIQUES
• Barbara J
• Grosz
• THEORETICAL TECHNICAL ISSUES
• NATURAL LANGUAGE ACCESS TO DATABASES
• R
• Petrick
• Domain Independent
• Database Access Systems
• ISSUES IN NATURAL LANGUAGE
• ACCESS TO DATABASES
• A LOGIC PROGRAMMING PERSPECTIVE
• Sharon C
• Salveter David Maier
• PLANNING NATURAL LANGUAGE
• EXPRESSIONS REFERRING
• Douglas E
• Appelt
• THE TEXT SYSTEM
• NATURAL LANGUAGE GENERATION
• Kathleen R
• M
• MENTING A DATABASE
• KNOWLEDGE REPRESENTATION
• THE KEY TO THE SELECTION PROBLEM
• E
• Jeffrey Conklin David D
• McDonald
• A KNOWLEDGE ENGINEERING
• NATURAL LANGUAGE UNDERSTANDING
• Stuart C
• Shapiro
• NATURAL LANGUAGE TEXTS
• NECESSARILY GRAMMATICAL
• EVEN COMPLETE
• UNGRAMHATICALITY
• EXTRA GRAMMATICALITY
• NATURAL LANGUAGE UNDERSTANDING SYSTEMS
• Taxonomy
• Descriptions
• Individuals in Natural
• Language Understanding
• The Use of Ooject Special Knowledge
• Natural Language Processing
• Mark H
• Bursteln