Some simple effective approximations to the 2-Poisson model for probabilistic weighted retrieval

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Some simple effective approximations to the 2-Poisson model for probabilistic weighted retrieval (1994)

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by S. E. Robertson , S. Walker

Venue:	In Proceedings of SIGIR’94
Citations:	459 - 14 self

BibTeX

@INPROCEEDINGS{Robertson94somesimple,
    author = {S. E. Robertson and S. Walker},
    title = {Some simple effective approximations to the 2-Poisson model for probabilistic weighted retrieval},
    booktitle = {In Proceedings of SIGIR’94},
    year = {1994},
    pages = {232--241},
    publisher = {Springer-Verlag}
}

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Abstract

The 2–Poisson model for term frequencies is used to suggest ways of incorporating certain variables in probabilistic models for information retrieval. The variables concerned are within-document term frequency, document length, and within-query term frequency. Simple weighting functions are developed, and tested on the TREC test collection. Considerable performance improvements (over simple inverse collection frequency weighting) are demonstrated. 1

Keyphrases

simple effective approximation 2-poisson model trec test collection within-query term frequency within-document term frequency considerable performance improvement probabilistic model information retrieval simple inverse collection frequency document length term frequency poisson model certain variable simple weighting function

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