RT Journal Article T1 A Study of the Combination of Variation Operators in the NSGA-II Algorithm A1 Nebro-Urbaneja, Antonio Jesús A1 Durillo, Juan J. A1 Machín, Mirialys A1 Coello Coello, Carlos A. A1 Dorronsoro, Bernabé K1 Computación evolutiva AB Multi-objective evolutionary algorithms rely on the use of variation operators as their basic mechanism to carry out the evolutionaryprocess. These operators are usually fixed and applied in the same way during algorithm execution, e.g., the mutation probability in genetic algorithms. This paper analyses whether a more dynamic approach combining different operators with variable application rate along the search process allows to improve the static classical behavior. This way, we explorethe combined use of three different operators (simulated binary crossover, differential evolution’s operator, and polynomial mutation) inthe NSGA-II algorithm. We have considered two strategies for selecting the operators: random and adaptive. The resulting variants have beentested on a set of 19 complex problems, and our results indicate that bothschemes significantly improve the performance of the original NSGA-IIalgorithm, achieving the random and adaptive variants the best overallresults in the bi- and three-objective considered problems, respectively. PB Springer YR 2013 FD 2013 LK http://hdl.handle.net/10630/6746 UL http://hdl.handle.net/10630/6746 LA eng NO UNIVERSIDAD DE MÁLAGA. CAMPUS DE EXCELENCIA INTERNACIONAL ANDALUCÍA TECH DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 3 mar 2026