Handling of missing values in lexical acquisition

Bel Rafecas, Núria

Handling of missing values in lexical acquisition

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Citation

Bel N. Handling of missing values in lexical acquisition. In: Calzolari N, Choukri K, Maegaard B, Mariani J, Odijk J, Piperidis S, Rosner M, Tapias D, editors. Proceedings of the Seventh conference on International Language Resources and Evaluation (LREC'10); 2010 May 17-23; Valletta, Malta. Paris: European Languages Resources Association; 2010. p. 2728-35.

Abstract

We propose a strategy to reduce the impact of the sparse data problem in the tasks of lexical information acquisition based on the observation of linguistic cues. It justifies that the uncertainty created by missing values, i.e. non-observed cues, can be handled by estimating its likelihood of being observable. Because of the Zipfian distribution of words, instead of estimating the likelihood from the data, we exploit the correlation drawn from the fact that a lexical class is based on the observation of different cues. We obtained experimental results that show a clear benefit of the proposed approach.

Description

Comunicació presentada a: 7th Conference on International Language Resources and Evaluation, celebrada a Valletta, Malta, del 17 al 23 de maig de 2010.