Query Expansion: Is It Necessary In Textual Case-Based Reasoning?

  • Aminu Bui Muhammad
  • Ahmed Tambuwal Yusuf

Abstract

Query expansion (QE) is the process of transforming a seed query to improve retrieval performance in information retrieval operations. It is often intended to overcome a vocabulary mismatch between the query and the document collection. Query expansion is known to improve retrieval effectiveness of some information retrieval systems, however, its effect in Textual Case-based reasoning (TCBR) which is closely related to the field of Information Retrieval has not been well studied. In this research, a TCBR System intended for storage and retrieval of Frequently Asked Questions (FAQs) named FAQCase was developed. Experiments were conducted to examine the effect of synonym-based query expansion on the system. The result has shown that there is significant retrieval improvement in FAQCase with query expansion over FAQCase without query expansion, in a situation where vocabulary mismatch between new questions and the stored FAQs is high.

Keywords: Query expansion, Textual case-based reasoning, Word sense disambiguation, WordNet

Nigerian Journal of Basic and Applied Science (2011), 19 (2): 269-276

Author Biographies

Aminu Bui Muhammad
Computer Science Unit, Department of Mathematics, Usmanu Danfodiyo University, Sokoto, Nigeria
Ahmed Tambuwal Yusuf
Computer Science Unit, Department of Mathematics, Usmanu Danfodiyo University, Sokoto, Nigeria
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Articles

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print ISSN: 0794-5698