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Author Allende, H.; Bravo, D.; Canessa, E. pdf  doi
openurl 
  Title Robust design in multivariate systems using genetic algorithms Type
  Year 2010 Publication Quality & Quantity Abbreviated Journal Qual. Quant.  
  Volume 44 Issue 2 Pages 315-332  
  Keywords Robust design; Taguchi methods; Genetic algorithms; Desirability functions  
  Abstract This paper presents a methodology based oil genetic algorithms, which finds feasible and reasonably adequate Solutions to problems of robust design in multivariate systems. We use a genetic algorithm to determine the appropriate control factor levels for simultaneously optimizing all of the responses of the system, considering the noise factors which affect it. The algorithm is guided by a desirability function which works with only one fitness function although the system May have many responses. We validated the methodology using data obtained from a real system and also from a process simulator, considering univariate and multivariate systems. In all cases, the methodology delivered feasible solutions, which accomplished the goals of robust design: obtain responses very close to the target values of each of them, and with minimum variability. Regarding the adjustment of the mean of each response to the target value, the algorithm performed very well. However, only in some of the multivariate cases, the algorithm was able to significantly reduce the variability of the responses.  
  Address [Allende, Hector; Bravo, Daniela; Canessa, Enrique] Univ Adolfo Ibanez, Fac Ciencia & Tecnol, Balmaceda 1620, Vina Del Mar, Chile, Email: hallende@uai.cl  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0033-5177 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000275327300008 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 82  
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Author Canessa, E.; Droop, C.; Allende, H. pdf  doi
openurl 
  Title An improved genetic algorithm for robust design in multivariate systems Type
  Year 2012 Publication Quality & Quantity Abbreviated Journal Qual. Quant.  
  Volume 46 Issue 2 Pages 665-678  
  Keywords Robust design; Taguchi methods; Genetic algorithms; Desirability functions; Research article  
  Abstract In a previous article, we presented a genetic algorithm (GA), which finds solutions to problems of robust design in multivariate systems. Based on that GA, we developed a new GA that uses a new desirability function, based on the aggregation of the observed variance of the responses and the squared deviation between the mean of each response and its corresponding target value. Additionally, we also changed the crossover operator from a one-point to a uniform one. We used three different case studies to evaluate the performance of the new GA and also to compare it with the original one. The first case study involved using data from a univariate real system, and the other two employed data obtained from multivariate process simulators. In each of the case studies, the new GA delivered good solutions, which simultaneously adjusted the mean of each response to its corresponding target value. This performance was similar to the one of the original GA. Regarding variability reduction, the new GA worked much better than the original one. In all the case studies, the new GA delivered solutions that simultaneously decreased the standard deviation of each response to almost the minimum possible value. Thus, we conclude that the new GA performs better than the original one, especially regarding variance reduction, which was the main problem exhibited by the original GA.  
  Address [Canessa, Enrique; Droop, Christian; Allende, Hector] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Balmaceda 1620, Vina Del Mar, Chile, Email: ecanessa@uai.cl  
  Corporate Author Thesis  
  Publisher Springer Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0033-5177 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000299134200017 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 191  
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