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Acceleration of Experiment-Based Evolutionary Multi-objective Optimization Using Fitness Estimation
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Acceleration of Experiment-Based Evolutionary Multi-objective Optimization Using Fitness Estimation
Hirotaka Kaji1 and Hajime Kita2 
| (1) |
Research and Development Operations, Yamaha Motor Co. Ltd., 2500 Shingai, Iwata, Shizuoka, Japan |
| (2) |
Academic Center for Computing and Media Studies, Kyoto Univercity, Yoshida nihonmatsu-cho, Sakyo-ku, Kyoto, Japan |
Abstract
Evolutionary Multi-objective Optimization (EMO) is ex-pected to be a powerful optimization framework for real world problems
such as engineering design. Recent progress in automatic control and instrumentation provides a smart environment called Hardware
In the Loop Simulation (HILS). It is available for our target application, that is, the experiment-based optimization. However,
since Multi-objective Evolutionary Algorithms (MOEAs) require a large number of evaluations, it is difficult to apply it to
real world problems of costly evaluation. To make experiment-based EMO using the HILS environment feasible, the most important
pre-requisite is to reduce the number of necessary fitness evaluations. In the experiment-based EMO, the performance analysis
of the evaluation reduction under the uncertainty such as observation noise is highly important, although the previous works
assume noise-free environments. In this paper, we propose an evaluation reduction to overcome the above-mentioned problem
by selecting the solution candidates by means of the estimated fitness before applying them to the real experiment in MOEAs.
We call this technique Pre-selection. For the estimation of fitness, we adopt locally weighted regression. The effectiveness
of the proposed method is examined by numerical experiments.
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