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A context-sensitive framework for lexical ontologies

Published online by Cambridge University Press:  01 March 2008

TONY VEALE  and
YANFEN HAO
TONY VEALE
Affiliation:
School of Computer Science and Informatics, University College Dublin, Ireland e-mail: tony.veale@ucd.ie, yanfen.hao@ucd.ie
YANFEN HAO
Affiliation:
School of Computer Science and Informatics, University College Dublin, Ireland e-mail: tony.veale@ucd.ie, yanfen.hao@ucd.ie
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Abstract

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Human categorization is neither a binary nor a context-free process. Rather, the criteria that govern the use and recognition of certain concepts may be satisfied to different degrees in different contexts. In light of this reality, the idealized, static structure of a lexical-ontology like WordNet appears both excessively rigid and unduly fragile when faced with real texts that draw upon different contexts to communicate different world-views. In this paper we describe a syntagmatic, corpus-based approach to redefining the concepts of a lexical-ontology like WordNet in a functional, gradable and context-sensitive fashion. We describe how the most diagnostic properties of concepts, on which these functional definitions are based, can be automatically acquired from the Web, and demonstrate how these properties are more predictive of how concepts are actually used and perceived than properties derived from other sources (such as WordNet itself).

Information

Type
Articles
Information
The Knowledge Engineering Review , Volume 23 , Special Issue 1: Contexts and Ontologies , March 2008 , pp. 101 - 115
Copyright
Copyright © Cambridge University Press 2008

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