A novel preference articulation operator for the Evolutionary Multi-Objective Optimisation of classifiers in concealed weapons detection.

Rostami, S., Reilly, D.O., Shenfield, A. and Bowring, N., 2015. A novel preference articulation operator for the Evolutionary Multi-Objective Optimisation of classifiers in concealed weapons detection. Information Sciences, 295, 494 - 520 .

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DOI: 10.1016/j.ins.2014.10.031

Abstract

Abstract The incorporation of decision maker preferences is often neglected in the Evolutionary Multi-Objective Optimisation (EMO) literature. The majority of the research in the field and the development of EMO algorithms is primarily focussed on converging to a Pareto optimal approximation close to or along the true Pareto front of synthetic test problems. However, when EMO is applied to real-world optimisation problems there is often a decision maker who is only interested in a portion of the Pareto front (the Region of Interest) which is defined by their expressed preferences for the problem objectives. In this paper a novel preference articulation operator for EMO algorithms is introduced (named the Weighted Z-score Preference Articulation Operator) with the flexibility of being incorporated a priori, a posteriori or progressively, and as either a primary or auxiliary fitness operator. The Weighted Z-score Preference Articulation Operator is incorporated into an implementation of the Multi-Objective Evolutionary Algorithm Based on Decomposition (named WZ-MOEA/D) and benchmarked against MOEA/D-DRA on a number of bi-objective and five-objective test problems with test cases containing preference information. After promising results are obtained when comparing WZ-MOEA/D to MOEA/D-DRA in the presence of decision maker preferences, WZ-MOEA/D is successfully applied to a real-world optimisation problem to optimise a classifier for concealed weapon detection, producing better results than previously published classifier implementations.

Item Type:Article
ISSN:0020-0255
Uncontrolled Keywords:Evolutionary computation
Subjects:UNSPECIFIED
Group:Faculty of Science and Technology
ID Code:21928
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:11 May 2015 13:29
Last Modified:11 May 2015 13:29

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