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arXiv · 1608.01573

Local Term Weight Models from Power Transformations: Development of BM25IR: A Best Match Model based on Inverse Regression

Edel Garcia
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Abstract

In this article we show how power transformations can be used as a common framework for the derivation of local term weights. We found that under some parametric conditions, BM25 and inverse regression produce equivalent results. As a special case of inverse regression, we show that the largest increment in term weight occurs when a term is mentioned for the second time. A model based on inverse regression (BM25IR) is presented. Simulations suggest that BM25IR works fairly well for different BM25 parametric conditions and document lengths.

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BibTeXRIS

Edel Garcia. 2016-08-04. Local Term Weight Models from Power Transformations: Development of BM25IR: A Best Match Model based on Inverse Regression. https://arxiv.org/abs/1608.01573

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