Entropic criterion for model selection

Details Entropic criterion for model selection Entropic criterion for model selection

2006-04-03

arxiv.org/abs/cond-mat/0604027v1

Physica A370, 530 (2006)

Physics

Condensed Matter

Statistical Mechanics

10 pages. Accepted for publication in Physica A, 2006

Scientific paper

10.1016/j.physa.2006.03.024

Model or variable selection is usually achieved through ranking models according to the increasing order of preference. One of methods is applying Kullback-Leibler distance or relative entropy as a selection criterion. Yet that will raise two questions, why uses this criterion and are there any other criteria. Besides, conventional approaches require a reference prior, which is usually difficult to get. Following the logic of inductive inference proposed by Caticha, we show relative entropy to be a unique criterion, which requires no prior information and can be applied to different fields. We examine this criterion by considering a physical problem, simple fluids, and results are promising.

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