TAILIEUCHUNG - Báo cáo khoa học: "A GENERAL COMPUTATIONAL MODEL FOR WORD-FORM RECOGNITION AND PRODUCTION"

A language independent m o d e l for r e c o g n i t i o n and p r o d u c t i o n of w o r d f o r m s is p r e s e n t e d . T h i s " t w o - l e v e l m o d e l " is based on a new w a y of d e s c r i b i n g m o r p h o logical alternations | A GENERAL COMPUTATIONAL MODEL FOR WORD-FORM RECOGNITION AND PRODUCTION Kimmo Koskenniemi Department of General Linguistics Univeristy of Helsinki Hallituskatu 11-13 Helsinki 10 Finland ABSTRACT A language independent model for recognition and production of word forms is presented. This two-level model is based on a new way of describing morphological alternations. All rules describing the morphophonological variations are parallel and relatively independent of each other. Individual rules are implemented as finite state automata as in an earlier model due to Martin Kay and Ron Kaplan. The two-level model has been implemented as an operational computer programs in several places. A number of operational two-level descriptions have been written or are in progress Finnish English Japanese Rumanian French Swedish Old Church Slavonic Greek Lappish Arabic Icelandic . The model is bidirectional and it is capable of both analyzing and synthesizing word-forms. 1. Generative phonology The formalism of generative phonology has been widely used since its introduction in the 1960 s. The morphology of any language may be described with the formalism by constructing a set of rewriting rules. The rules start from an underlying lexical representation and transform it step by step until the surface representation is reached. The generative formalism is unidirectional and it has proven to be computationally difficult and therefore it has found little use in practical morphological programs. 2. The model of Kay and Kaplan Martin Kay and Ron Kaplan from Xerox PARC noticed that each of the generative rewriting rules can be represented by a finite state automaton or transducer Kay 1982 . Such an automaton would compare two successive levels of the generative framework the level immediately The work described in this paper is a part of the project 593 sponsored by the Academy of Finland. before application of the rule and the level after application of the rule. The whole morphological .

• Báo cáo khoa học
• A GENERAL COMPUTATIONAL MODEL
• WORD FORM RECOGNITION AND PRODUCTION
• Kimmo Koskenniemi
• scientific reports
• model language
• process natural language
• A General Computational
• Treatment Of The Comparative
• Carol Friedman
• A General Computational Treatment of Comparatives
• Natural Language Question Answering
• Bruce W
• Ballard
• 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
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• EVEN COMPLETE
• UNGRAMHATICALITY
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• NATURAL LANGUAGE UNDERSTANDING SYSTEMS
• Taxonomy
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• Individuals in Natural
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• The Use of Ooject Special Knowledge
• Natural Language Processing
• Mark H
• Bursteln