Comparison of performances of five prospective approaches for the multi-response optimization |
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Authors: | Susanta Kumar Gauri Surajit Pal |
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Affiliation: | 1. SQC & OR Unit, Indian Statistical Institute, 203, B. T. Road, Kolkata, 700108, India 2. SQC & OR Unit, Indian Statistical Institute, 110, Nelson Manickam Road, Chennai, 600029, India
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Abstract: | The Taguchi method of experimental design is widely used for optimization of process performance. However, this method has been developed to optimize single-response processes. But, in many situations, the engineers are required to determine the process settings that can simultaneously optimize multiple responses. In the recent past, researchers have proposed several systematic procedures for multi-response optimization. Most of these methods use complicated statistical/mathematical models and are, therefore, not easily comprehendible to the engineers who do not have a strong background in mathematics. Only a few methods, e.g. weighted signal-to-noise (WSN) ratio, Grey relational analysis, multiple-response signal-to-noise ratio, VIKOR (VlseKriterijumska Optimizacija I Kompromisno Resenje in Serbian), and weighted principal component methods, use relatively simpler procedures. In this paper, the computational procedures for these five methods are standardized. Three sets of experimental data are analyzed using these standardized procedures and the predicted optimization performances of the five methods are compared. The results show that no method can give better optimization than the WSN method. |
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