COMBINING EVOLUTION STRATEGY WITH ORDINAL OPTIMIZATION
Shih-Cheng Horng () and
Shin-Yeu Lin ()
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Shih-Cheng Horng: Department of Computer Science and Information Engineering, Chaoyang University of Technology, Taichung, Taiwan, R.O.C.
Shin-Yeu Lin: Department of Electrical Engineering, Chang Gung University, Taoyuan, Taiwan, R.O.C.
International Journal of Information Technology & Decision Making (IJITDM), 2013, vol. 12, issue 02, 233-260
Abstract:
In this paper, we combine evolution strategy (ES) with ordinal optimization (OO), abbreviated as ES + OO, to solve real-time combinatorial stochastic simulation optimization problems with huge discrete solution space. The first step of ES + OO is to use an artificial neural network (ANN) to construct a surrogate model to roughly evaluate the objective value of a solution. In the second step, we apply ES assisted by the ANN-based surrogate model to the considered problem to obtain a subset of good enough solutions. In the last step, we use the exact model to evaluate each solution in the good enough subset, and the best one is the final good enough solution. We apply the proposed algorithm to a wafer testing problem, which is formulated as a combinatorial stochastic simulation optimization problem that consists of a huge discrete solution space formed by the vector of threshold values in the testing process. We demonstrate that (a) ES + OO outperforms the combination of genetic algorithm (GA) with OO using extensive simulations in the wafer testing problem, and its computational efficiency is suitable for real-time application, (b) the merit of using OO approach in solving the considered problem and (c) ES + OO can obtain the approximate Pareto optimal solution of the multi-objective function resided in the considered problem. Above all, we propose a systematic procedure to evaluate the performance of ES + OO by providing a quantitative result.
Keywords: Evolution strategy; ordinal optimization; artificial neural network; stochastic simulation optimization; combinatorial optimization; wafer testing (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijitdm:v:12:y:2013:i:02:n:s0219622013500107
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DOI: 10.1142/S0219622013500107
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