The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines

Cvetana Krstev, Ranka Stanković, Duško Vitas, Ivan Obradović

Abstract
In this paper we present how resources and tools developed within the Human Language Technology Group at the University of Belgrade can be used for tuning queries before submitting them to a web search engine. We argue that the selection of words chosen for a query, which are of paramount importance for the quality of results obtained by the query, can be substantially improved by using various lexical resources, such as morphological dictionaries and wordnets. These dictionaries enable semantic and morphological expansion of the query, the latter being very important in highly inflective languages, such as Serbian. Wordnets can also be used for adding another language to a query, if appropriate, thus making the query bilingual. Problems encountered in retrieving documents of interest are discussed and illustrated by examples. A brief description of resources is given, followed by an outline of the web tool which enables their integration. Finally, a set of examples is chosen in order to illustrate the use of the lexical resources and tool in question. Results obtained for these examples show that the number of documents obtained through a query by using our approach can double and even quadruple in some cases.
Anthology ID:
L08-1004
Volume:
Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08)
Month:
May
Year:
2008
Address:
Marrakech, Morocco
Editors:
Nicoletta Calzolari, Khalid Choukri, Bente Maegaard, Joseph Mariani, Jan Odijk, Stelios Piperidis, Daniel Tapias
Venue:
LREC
SIG:
Publisher:
European Language Resources Association (ELRA)
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Language:
URL:
http://www.lrec-conf.org/proceedings/lrec2008/pdf/67_paper.pdf
DOI:
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Cite (ACL):
Cvetana Krstev, Ranka Stanković, Duško Vitas, and Ivan Obradović. 2008. The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines. In Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08), Marrakech, Morocco. European Language Resources Association (ELRA).
Cite (Informal):
The Usage of Various Lexical Resources and Tools to Improve the Performance of Web Search Engines (Krstev et al., LREC 2008)
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http://www.lrec-conf.org/proceedings/lrec2008/pdf/67_paper.pdf
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