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Title:	Statistical methods for parameter fine-tuning of metaheuristics
Author:	Calvet Liñán, Laura
Other authors:	Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I; Serrat Piè, Carles; Juan Pérez, Angel Alejandro
Abstract:	Metaheuristics are an approximate method widely used to solve many hard optimization problems in a multitude of fields. They depend on a variable number of parameters. Despite the fact that they are usually capable of finding good solutions within a reasonable time, the difficulty in selecting appropriate values for their parameters causes a loss of efficiency, as it normally requires much time, skills and experience. This master degree s thesis provides a survey of the main approaches developed in the last decade to tackle the problem of choosing a good set of parameter values, called the Parameter Setting Problem, and compares them from a methodological point of view focusing on the statistical procedures used so far by the scientific community. This analysis is accompanied by a proposal of a general methodology. The results of applying it to fine-tuning the parameters of a hybrid algorithm, which combines Biased Randomization with the Iterated Local Search metaheuristic, for solving the Multi-depot Vehicle Routing Problem are also reported. The computational experiment shows promising results and the need / suitability of further investigations based on a wider range of statistical learning techniques. Along these same lines, different suggestions for future work are described. In addition, this work highlights the importance of statistics in operations research giving a real-world example.
Subject(s):	-Àrees temàtiques de la UPC::Matemàtiques i estadística::Estadística matemàtica -Experimental design -Parameter Fine-tuning of Metaheuristics -Design of Experiments -Regression Models -Multi-Objective Optimization -Disseny d'experiments -Classificació AMS::62 Statistics::62K Design of experiments
Rights:	http://creativecommons.org/licenses/by-nc-sa/3.0/es/
Document type:	Research/Master Thesis
Published by:	Universitat Politècnica de Catalunya; Universitat de Barcelona
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