Selecting Effective Terms for Query Formulation

Authors:
Chia-Jung Lee;Yi-Chun Lin;Ruey-Cheng Chen;Pu-Jen Cheng
Affiliations:
Department of Computer Science and Information Engineering, National Taiwan University,;Department of Computer Science and Information Engineering, National Taiwan University,;Department of Computer Science and Information Engineering, National Taiwan University,;Department of Computer Science and Information Engineering, National Taiwan University,
Venue:
AIRS '09 Proceedings of the 5th Asia Information Retrieval Symposium on Information Retrieval Technology
Year:
2009

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Abstract

It is difficult for users to formulate appropriate queries for search. In this paper, we propose an approach to query term selection by measuring the effectiveness of a query term in IR systems based on its linguistic and statistical properties in document collections. Two query formulation algorithms are presented for improving IR performance. Experiments on NTCIR-4 and NTCIR-5 ad-hoc IR tasks demonstrate that the algorithms can significantly improve the retrieval performance by 9.2% averagely, compared to the performance of the original queries given in the benchmarks.