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A variable selection method based on Tabu search for logistic regression models
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DOI：10.1016/j.ejor.2008.10.007.png)
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Abstract
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A Tabu search method is proposed and analysed for selecting variables that are subsequently used in Logistic Regression Models. The aim is to find from among a set of m variables a smaller subset which enables the efficient classification of cases. Reducing dimensionality has some very well-known advantages that are summarized in literature. The specific problem consists in finding, for a small integer value of p, a subset of size p of the original set of variables that yields the greatest percentage of hits in Logistic Regression. The proposed Tabu search method performs a deep search in the solution space that alternates between a basic phase (that uses simple moves) and a diversification phase (to explore regions not previously visited). Testing shows that it obtains significantly better results than the Stepwise, Backward or Forward methods used by classic statistical packages. Some results of applying these methods are presented. (C) 2008 Elsevier B.V. All rights reserved.
Keywords:
Variable selection
Logistic regression
Metaheuristics
Tabu search
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