TAILIEUCHUNG - Báo cáo khoa học: "A POOAFR MODIFICATIONS IN TEFRAIMOGSRP SLOHOML SFPG"

Recent investigations show a remarkable convergence among contemporary unification-based formalisms for syntactic description. This convergence is now i t s e l f becoming an object of study, and there is an increasing recognition of the need for e x p l i c i t characterizations of the properties that relate and distinguish similar grammar formalisms. The paper proposes a series of changes in the formalism of Generalized Phrase Structure Grammar that throw light on its relation to Functional Unification Grammar. The essential contribution is a generalization of cooccurrence restrictions, which become the principal and unifying device. | A PROPOSAL FOR MODIFICATIONS IN THE FORMALISM OF GPSG James KiIbury UniversitãtiTrier FB II LDV Postfach 3825 D-5500 Trier Fed. Rep. of Germany ABSTRACT Recent investigations show a remarkable convergence among contemporary unification-based formalisms for syntactic description. This convergence is now itself becoming an object of study and there is an increasing recognition of the need for explicit characterizations of the properties that relate and distinguish similar grammar formalisms. The paper proposes a series of changes in the formalism of Generalized Phrase structure Grammar that throw light on its relation to Functional Unification Grammar. The essential contribution is a generalization of cooccurrence restrictions which become the principal and unifying device of GPSG. Introducing Category Cooccurrence Restrictions CCRs for local trees in analogy to Feature Cooccurrence Restrictions for categories provides a genuine gain in expressiveness for the formalism other devices such as Feature Instantiation Principles and Linear Precedence Statements can be regarded as special cases of CCRs. The proposals lead to a modified notion of unification itself. A PROPOSAL FOR MODIFICATIONS IN THE FORMALISM OF GPSG Recent investigations show a remarkable convergence among contemporary unification-based formalisms for syntactic description cf Shieber 1985 . This convergence is now itself becoming an object of study and there is an increasing recognition of the need for explicit characterizations of the properties that relate and distinguish similar grammar formalisms. For example Shieber 1986 describes a compilation from Generalized Phrase Structure Grammar GPSG cf Gazdar et alii 1985 henceforth GKPS to PATR-II. The compilation defines the semantics of GPSG by explicitly relating the two formalisms at the same time difficulties in specifying the compilation show that differences between the formalisms transcend variety in notation. This paper is similar to Shieber s in .

• Báo cáo khoa học
• A POOAFR MODIFICATIONS
• TEFRAIMOGSRP SLOHOML SFPG
• James Kilbury
• 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