首页 | 本学科首页   官方微博 | 高级检索  
     


An algorithm to determine sample sizes for optimization with artificial neural networks
Authors:Aroonsri Nuchitprasittichai  Selen Cremaschi
Affiliation:Dept. of Chemical Engineering, The University of Tulsa, , Tulsa, OK, 74104
Abstract:This article presents an algorithm developed to determine the appropriate sample size for constructing accurate artificial neural networks as surrogate models in optimization problems. In the algorithm, two model evaluation methods—cross‐validation and/or bootstrapping—are used to estimate the performance of various networks constructed with different sample sizes. The optimization of a CO2 capture process with aqueous amines is used as the case study to illustrate the application of the algorithm. The output of the algorithm—the network constructed using the appropriate sample size—is used in a process synthesis optimization problem to test its accuracy. The results show that the model evaluation methods are successful in identifying the general trends of the underlying model and that objective function value of the optimum solution calculated using the surrogate model is within 1% of the actual value. © 2012 American Institute of Chemical Engineers AIChE J, 59: 805–812, 2013
Keywords:sample size determination  incremental Latin hypercube sampling  artificial neural networks  cross‐validation  superstructure optimization
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号