tailieunhanh - Báo cáo khoa học: "PARSING HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR"

The Head-driven Phrase Structure G r a m m a r project ( H P S G ) is an English language database query system under development at Hewlett-Packard Laboratories. Unlike other product-oriented efforts in the natural language understanding field, the H P S G system was designed and implemented by linguists on the basis of recent theoretical developments. But, unlike other implementations of linguistic theories, this system is not a toy, as it deals with a variety of practical problems not covered in the theoretical literature. . | PARSING HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR Derek Proudian aud Carl Pollard Hewlett-Packard Laboratories 1501 Page Mill Road Palo Alto CA. 94303 USA Abstract The Head-driven Phrase Structure Grammar project HPSG is an English language database query system under development at Hewlett-Packard Laboratories. Unlike other product-oriented efforts in the natural language understanding field the HPSG system was designed and implemented by linguists on the basis of recent theoretical developments. But unlike other implementations of linguistic theories this system is not a toy as it deals with a variety of practical problems not covered in the theoretical literature. We believe that this makes the HPSG system unique in its combination of linguistic theory and practical application. The HPSG system differs from its predecessor GPSG reported on at the 1982 ACL meeting Gawron et al. J1982Ị in four significant respects syntax lexical representation parsing and semantics. The paper focuses on parsing issues but also gives a synopsis of the underlying syntactic formalism. 1 Syntax HPSG is a lexically based theory of phrase structure so called because of the central role played by grammatical heads and their associated complements. Roughly speaking heads are linguistic forms words and phrases that exert syntactic and semantic restrictions on the phrases called complements that characteristically combine with them to form larger phrases. Verbs are the heads of verb phrases and sentences nouns are the heads of noun phrases and so forth. As in most current syntactic theories categories are represented as complexes of feature specifications. But the HPSG treatment of lexical subcategorization obviates the need in the theory of categories for the notion of bar-level in the sense of X-bar theory prevalent in much current linguistic research . In addition the augmentation of the system of categories with stackvalued features - features whose values are sequences of categories - .

• Báo cáo khoa học
• PARSING HEAD DRIVEN
• PHRASE STRUCTURE GRAMMAR
• Derek Proudlan and Carl Pollard Hewlett Packard
• 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