TAILIEUCHUNG - Báo cáo khoa học: "MODULAR LOGIC GRAMMARS"

This grammar formalism, a high degree of modularity between syntax and semantics. There is a syntax rule compiler (compiling into Prolog) which takes care of the building of analysis structures and the interface to a clearly separated semantic interpretation component dealing with scoping and the construction of logical forms. The whole system can work in either a one-pass mode or a two-pass mode. [n the one-pass mode, logical forms are built directly during parsing through interleaved calls to semantics, added automatically by the rule compiler. . | MODULAR LOGIC GRAMMARS Michael c. McCord IBM Thomas J. Watson Research Center p. o. Box 218 Yorktown Heights NY 10598 ABSTRACT This report describes a logic grammar formalism Modular Logic Grammars exhibiting a high degree of modularity between syntax and semantics. There is a syntax rule compiler compiling into Prolog which takes care of the building of analysis structures and the interface to a clearly separated semantic interpretation component dealing with scoping and the construction of logical forms. The whole system can work in either a one-pass mode or a two-pass mode. In the one-pass mode logical forms are built directly during parsing through interleaved calls to semantics added automatically by the rule compiler. In the two-pass mode syntactic analysis trees are built automatically in the first pass and then given to the one-pass semantic component. The grammar formalism includes two devices which cause the automatically built syntactic structures to differ from derivation trees in two ways 1 There is a shift operator for dealing with left-embedding constructions such as English possessive noun phrases while using right-recursive rules which are appropriate for Prolog parsing . 2 There is a distinction in the syntactic formalism between strong non-terminals and weak non-terminals which is important for distinguishing major levels of grammar. 1. INTRODUCTION The term logic grammar will be used here in the context of natural language processing to mean a logic programming system implemented normally in Prolog which associates semantic representations normally in some version of predicate logic with natural language text. Logic grammars may have varying degrees on modularity in their treatments of syntax and semantics. There may or may not be an isolatable syntactic component. In writing metamorphosis grammars Colmerauer 1973 or definite clause grammars DCG s a special case of metamorphosis grammars Pereira and Warren. 1980 it is possible to build logical .

• Báo cáo khoa học
• MODULAR LOGIC GRAMMARS
• Michael C
• McCord
• Thomas J
• Watson
• 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