TAILIEUCHUNG - Báo cáo khoa học: "RELATING SYNTAX AND SEMANTICS: THE SYNTACTICO-SEMANTIC LEXICON OF THE SYSTEM VIE-LANG"

This paper describes the structure and e v a l u a t i o n of the s y n t a c t i c o - s e m a n t i c lexicon (SSL) of the German Natural Language Understanding System VIE-LANG [3]. VIE-LANG uses an SI-Net [2] as internal r e p r e s e n t a t i o n . The SSL c o n t a i n s the rules according to which the mapping between net-structures and surface s t r u c t u r. | RELATING SYNTAX AND SEMANTICS THE SYNTACTICO-SEMANTIC LEXICON OF THE SYSTEM VIE-LANG Ingeborg steinacker Ernst Buchberger Department of Medical Cybernetics University of Vienna Austria ABSTRACT This paper describes the structure and evaluation of the syntactico-semantic lexicon SSL of the German Natural Language Understanding System VIE-LANG 3 . VIE-LANG uses an Si-Net 2 as internal representation. The SSL contains the rules according to which the mapping between net-structures and surface structures of a sentence is carried out. This information Is structured in a way that it can be evaluated from two sides. The parser interprets it as production-rules that control the analysis. Syntactic and semantic features of the input sentence are evaluated and individuals are created in the semantic net. The generator uses the same rules to express selected net-structures in adequate natural language expressions. It is shown how both processes can make effective use of the SSL. The different possibilities for evaluating the SSL are explained and illustrated by examples. I OVERVIEW OF THE SYSTEM VIE-LANG A. Representation In the system VIE-LANG real world knowledge is represented within a semantic net SN which is realized in the formalism of an Si-Net 2 . The net is organized in two layers. The generic layer contains the static knowledge of the system. At the generic level real world knowledge is represented in the form of concepts and roles. A concept is defined by its attributes which consist of two parts role and value restriction. The value restriction is a concept which defines the range of possible fillers for the attribute the role defines the relation of the filler to the concept being defined. Generic concepts are organized in a hierarchy of super- and subconcepts in which a subconcept inherits all attributes of its superconcepts. The second layer of the net contains the dynamic knowledge which consists of individualized concepts. The parser creates individuals of .

• Báo cáo khoa học
• RELATING SYNTAX
• SEMANTICS THE SYNTACTICO SEMANTIC LEXICON
• THE SYSTEM VIE LANG
• scientific reports
• model language
• process natural language
• 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