Natural Language Parsing and Linguistic Theories

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Springer Science & Business Media, 1988 - Computers - 482 pages
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presupposition fails, we now give a short introduction into Unification Grammar. Since all implementations discussed in this volume use PROLOG (with the exception of BlockjHaugeneder), we felt that it would also be useful to explain the difference between unification in PROLOG and in UG. After the introduction to UG we briefly summarize the main arguments for using linguistic theories in natural language processing. We conclude with a short summary of the contributions to this volume. UNIFICATION GRAMMAR 3 Feature Structures or Complex Categories. Unification Grammar was developed by Martin Kay (Kay 1979). Martin Kay wanted to give a precise defmition (and implementation) of the notion of 'feature'. Linguists use features at nearly all levels of linguistic description. In phonetics, for instance, the phoneme b is usually described with the features 'bilabial', 'voiced' and 'nasal'. In the case of b the first two features get the value +, the third (nasal) gets the value -. Feature value pairs in phonology are normally represented as a matrix. bilabial: + voiced: + I nasal: - [Feature matrix for b.] In syntax features are used, for example, to distinguish different noun classes. The Latin noun 'murus' would be characterized by the following feature-value pairs: gender: masculin, number: singular, case: nominative, pred: murus. Besides a matrix representation one frequently fmds a graph representation for feature value pairs. The edges of the graph are labelled by features. The leaves denote the value of a feature.
 

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Contents

INTRODUCTION
1
SEPARATING LINGUISTIC ANALYSES FROM LINGUISTIC THEORIES
33
APPLICABILITY OF INDEXED GRAMMARS TO NATURAL LANGUAGES
69
RECONCILING THEORY WITH PRACTICE
95
AN EXTENSION OF LRPARSING FOR LEXICAL FUNCTIONAL GRAMMAR
131
AN EFFICIENCYORIENTED LFG PARSER
149
PARSING WITH A GBGRAMMAR
177
COMBINING CATEGORIAL GRAMMAR AND UNIFICATION
202
ADJECTIF DETACHE IN LEXICAL FUNCTIONAL GRAMMAR
262
SOME PROBLEMS OF COORDINATION IN GERMAN
289
GERMAN WORD ORDER AND UNIVERSAL GRAMMAR
317
NONLOCALDEPENDENCIES AND INFINITIVAL CONSTRUCTIONS IN GERMAN
356
GPSG AND GERMAN WORD ORDER
411
THE PROPER TREATMENT OF QUANTIFICATION IN ORDINARY NOUN PHRASES
432
COMPOSITIONAL SEMANTICS FOR LFG
448
INDEX
475

A FEATUREBASED CATEGORIAL MORPHOSYNTAX FOR JAPANESE
230

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