An Unsupervised Language Independent Method of Name Discrimination Using Second Order Co-occurrence Features
Identifieur interne : 001860 ( Main/Exploration ); précédent : 001859; suivant : 001861An Unsupervised Language Independent Method of Name Discrimination Using Second Order Co-occurrence Features
Auteurs : Ted Pedersen [États-Unis] ; Anagha Kulkarni [États-Unis] ; Roxana Angheluta [Belgique] ; Zornitsa Kozareva [Espagne] ; Thamar Solorio [États-Unis]Source :
- Lecture Notes in Computer Science [ 0302-9743 ] ; 2006.
Abstract
Abstract: Previous work by Pedersen, Purandare and Kulkarni (2005) has resulted in an unsupervised method of name discrimination that represents the context in which an ambiguous name occurs using second order co–occurrence features. These contexts are then clustered in order to identify which are associated with different underlying named entities. It also extracts descriptive and discriminating bigrams from each of the discovered clusters in order to serve as identifying labels. These methods have been shown to perform well with English text, although we believe them to be language independent since they rely on lexical features and use no syntactic features or external knowledge sources. In this paper we apply this methodology in exactly the same way to Bulgarian, English, Romanian, and Spanish corpora. We find that it attains discrimination accuracy that is consistently well above that of a majority classifier, thus providing support for the hypothesis that the method is language independent.
Url:
DOI: 10.1007/11671299_23
Affiliations:
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These contexts are then clustered in order to identify which are associated with different underlying named entities. It also extracts descriptive and discriminating bigrams from each of the discovered clusters in order to serve as identifying labels. These methods have been shown to perform well with English text, although we believe them to be language independent since they rely on lexical features and use no syntactic features or external knowledge sources. In this paper we apply this methodology in exactly the same way to Bulgarian, English, Romanian, and Spanish corpora. 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