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oai:riuma.uma.es:10630/297992026-02-03T11:02:03Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc González-Gallardo, Sandra author Luque-Gallego, Mariano author Saborido Infantes, Rubén author Ruiz-Mora, Ana Belén author 2020 In this paper, a new version of the aggregation-based evolutionary algorithm Global WASF-GA (GWASF-GA) for many-objective optimization is proposed, called Adaptive Global WASF-GA (A-GWASF-GA). The fitness function of GWASF-GA is defined by an achievement scalarizing function (ASF) based on the Tchebychev distance, which considers two reference points (the nadir and utopian points) and a set of weight vectors. Despite of the benefits of using these two reference points simultaneously and a well- distributed set of weight vectors, it is necessary to go a step further to get better approximations in problems with complicated Pareto optimal fronts. For this, in A-GWASF-GA, some of the weight vectors are re-calculated during the optimization process based on the sparsity of the solutions found so far, and taking into account some theoretical results demonstrated in this paper regarding the ASF considered. Different strategies are carried out to accelerate the convergence and to maintain the diversity. The computational results, carried out in comparison with NSGA-III and different versions of MOEA/D, show the good performance of A-GWASF-GA in well-known but also in novel many-objective optimization benchmark problems. Mariano Luque, Sandra Gonzalez-Gallardo, Rubén Saborido, Ana B. Ruiz, Adaptive Global WASF-GA to handle many-objective optimization problems, Swarm and Evolutionary Computation, Volume 54, 2020, 100644, ISSN 2210-6502, https://doi.org/10.1016/j.swevo.2020.100644. (https://www.sciencedirect.com/science/article/pii/S2210650218306187) https://hdl.handle.net/10630/29799 10.1016/j.swevo.2020.100644 Optimización Adaptive Global WASF-GA to Handle Many-objective Optimization Problems