CLIR Experiments at Maryland for TREC-2002: Evidence combination for Arabic-English retrieval
CLIR Experiments at Maryland for TREC-2002: Evidence combination for Arabic-English retrieval
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Date
2003-04-04
Authors
Darwish, Kareem
Oard, Douglas W.
Advisor
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Abstract
The focus of the experiments reported in this paper was techniques for
combining evidence for cross-language retrieval, searching Arabic
documents using English queries. Evidence from multiple sources of
translation knowledge was combined to estimate translation
probabilities, and four techniques for estimating query-language term
weights from document-language evidence were tried. A new technique that
exploits translation probability information was found to outperform a
comparable technique in which that information was not used. Comparative
results for three variants of Arabic ^\light^] stemming are also
presented. A simple variant of an existing stemming algorithm was found
to result in significantly better retrieval effectiveness.
UMIACS-TR-2003-26
LAMP-TR-101