Title
Find robust solutions over time by two-layer multi-objective optimization method
Abstract
Robust optimization over time is a practical dynamic optimization method, which provides two detailed computable metrics to get the possible robust solutions for dynamic scalar optimization problems. However, the robust solutions fit for more time-varying moments or approximate the optimum more because only one metric is considered as the optimization objective. To find the true robust solution set satisfying maximum both survival time and average fitness simultaneously during all dynamic environments, a novel two-layer multi-objective optimization method is proposed. In the first layer, considering both metrics, the acceptable optimal solutions for each changing environment is found. Subsequently, they are composed of the practical robust solution set in the second layer. Taking the average fitness and the length of the robust solution set as two objectives, the optimal combinations for the whole time-varying environments are explored. The experimental results for the modified moving peaks benchmark shows that the robust solution sets considering both metrics are superior to the robust solutions gotten by ROOT. As the key parameters, the fitness threshold has the more obvious impact on the performances of MROOT than the time window, whereas ROOT is more sensitive to both of them.
Year
DOI
Venue
2014
10.1109/CEC.2014.6900241
IEEE Congress on Evolutionary Computation
Keywords
Field
DocType
optimisation,dynamic scalar optimization problems,mroot,average fitness,robust solutions,time window,dynamic optimization method,time-varying moments,optimization objective,computable metrics,fitness threshold,two-layer multiobjective optimization method,root,survival time,robustness,benchmark testing,measurement
Continuous optimization,Derivative-free optimization,Probabilistic-based design optimization,Mathematical optimization,Global optimization,Robust optimization,Computer science,Multi-objective optimization,Fitness approximation,Artificial intelligence,Optimization problem,Machine learning
Conference
Citations 
PageRank 
References 
5
0.43
7
Authors
4
Name
Order
Citations
PageRank
Yi-nan Guo111624.97
Meirong Chen2151.41
Haobo Fu351.11
Yun Liu450.77