A New Method of Weighting Query Terms for Ad-Hoc Retrieval.

K. L. Kwok: A New Method of Weighting Query Terms for Ad-Hoc Retrieval. SIGIR 1996: 187-195

@inproceedings{DBLP:conf/sigir/Kwok96,
  author    = {K. L. Kwok},
  editor    = {Hans-Peter Frei and
               Donna Harman and
               Peter Sch{\"a}uble and
               Ross Wilkinson},
  title     = {A New Method of Weighting Query Terms for Ad-Hoc Retrieval},
  booktitle = {Proceedings of the 19th Annual International ACM SIGIR Conference
               on Research and Development in Information Retrieval, SIGIR'96,
               August 18-22, 1996, Zurich, Switzerland (Special Issue of the
               SIGIR Forum)},
  publisher = {ACM},
  year      = {1996},
  isbn      = {0-89791-792-8},
  pages     = {187-195},
  ee        = {db/conf/sigir/Kwok96.html},
  crossref  = {DBLP:conf/sigir/96},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

BibTeX

Abstract

Ad-hoc retrieval relies on the evidence from a user's query to provide a sufficient variety of terms as well as different term frequencies for differentiating term importance. Short queries lack both types of information. A new method of automatically weighting query terms for ad-hoc retrieval is introduced that works for short queries. It is based on the term usage statistics in a collection and no training is required. Experiments with both the TREC2 and TREC4 ad-hoc queries show that this weighting scheme can provide significantly better results at the initial retrievat stage. At the expanded query stage, results vary from equal to significantly better than those relying on the originst query weights. In particular, this automatic method provides similar improvements to extra short queries of two to four content terms only.

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Printed Edition

Hans-Peter Frei, Donna Harman, Peter Schäuble, Ross Wilkinson (Eds.): Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR'96, August 18-22, 1996, Zurich, Switzerland (Special Issue of the SIGIR Forum). ACM 1996, ISBN 0-89791-792-8
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