Use of Internet for augmenting coverage in a lexical acquisition system from raw corpora: application to Russian

Oliver, Antoni; Castellón Masalles, Irene; Màrquez, Lluís

Use of Internet for augmenting coverage in a lexical acquisition system from raw corpora: application to Russian

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Abstract

This paper presents a methodology for the automatic acquisition of lexical resources from raw corpora. This methodology has proved to be efficient for those languages that, like Russian, present a rich and mainly concatenative morphology. This method can be applied for the creation of new resources, as well as in the enrichment of existing ones. We also present an extension of the system that uses automatic querying to Internet to acquire these entries for which there is not enough information in our corpus. The new basic acquisition methodology achieves similar results compared to the previous methods, but the use of Internet queries allows to increase recall levels with only a slight decrease in precision, obtaining signigicantly better overall results.

Citation

Oliver, A.[Antoni], Castellón,I.[Irene] & Màrquez, l. [Lluís]. (2003). Use of Internet for augmenting coverage in a lexical acquisition system from raw corpora: application to Russian. Proceedings of the Workshop IESL 2003. Internationa Workshop on Information Extraction for Slavonic and other Central and Eastern European Languages, 8-9 setembre de 2003, Borovets, Bulgaria

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