On Score Distributions and Relevance

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On Score Distributions and Relevance
We discuss the idea of modelling the statistical distributions of scores of documents, classified as relevant or non-relevant. Various specific combinations of standard statistical distributions have been used for this purpose. Some theoretical considerations indicate problems with some of the choices of pairs of distributions. Specifically, we revisit a generalisation of the well-known inverse relationship between recall and precision: some choices of pairs of distributions violate this generalised relationship. We identify the choices and the violations, and explore some of the consequences of this theoretical view. Reprinted from: G. Amati, C. Carpineto, G. Romano (eds), Advances in Information Retrieval, 29th European Conference on IR Research, ECIR 2007. Springer, 2007. (pp 40–51)
Stephen Robertson
Added 29 Oct 2010
Updated 29 Oct 2010
Type Conference
Year 2007
Where ECIR
Authors Stephen Robertson
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