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A NEW APPROACH TO SELECT THE BEST SUBSET OF PREDICTORS IN LINEAR REGRESSION MODELLING: BI-OBJECTIVE MIXED INTEGER LINEAR PROGRAMMING

Published online by Cambridge University Press:  11 January 2019

HADI CHARKHGARD*
Affiliation:
Department of Industrial and Management Systems Engineering, University of South Florida, Tampa, FL 33620, USA email hcharkhgard@usf.edu
ALI ESHRAGH
Affiliation:
School of Mathematical and Physical Sciences, University of Newcastle, New South Wales 2308, Australia email ali.eshragh@newcastle.edu.au
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Abstract

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We study the problem of choosing the best subset of $p$ features in linear regression, given $n$ observations. This problem naturally contains two objective functions including minimizing the amount of bias and minimizing the number of predictors. The existing approaches transform the problem into a single-objective optimization problem. We explain the main weaknesses of existing approaches and, to overcome their drawbacks, we propose a bi-objective mixed integer linear programming approach. A computational study shows the efficacy of the proposed approach.

Information

Type
Research Article
Copyright
© 2019 Australian Mathematical Society