A practical approach to multiple default inheritance for unification-based lexicons

Authors:
Graham Russell;Afzal Ballim;John Carroll;Susan Warwick-Armstrong
Affiliations:
ISSCO;ISSCO;Cambridge University Computer Laboratory;ISSCO
Venue:
Computational Linguistics - Special issue on inheritance: II
Year:
1992

Citing 14
Cited 13

The mathematics of inheritance systems

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The DINOUS parser

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Review of "Inheritance, defaults, and the lexicon" by Ted Briscoe, Valeria de Paiva, and Ann Copestake. Cambridge University Press 1993.

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Coping with derivation in a morphological component

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DATR theories and DATR models

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Tricolor DAGs for machine translation

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A sign expansion approach to dynamic, multi-purpose lexicons

COLING '96 Proceedings of the 16th conference on Computational linguistics - Volume 1

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Abstract

This paper describes a unification-based lexicon system for NLP applications that incorporates mechanisms for multiple default inheritance. Such systems are intractable in the general case---the approach adopted here places a number of restrictions on the inheritance hierarchy in order to remove some of the sources of complexity while retaining more desirable properties. Implications of the design choices are discussed, comparisons are drawn with related work in computational linguistics and AI, and illustrative examples from the lexicons of German and English are given.