Análisis y diseño de operadores de cruce basados en el cruce binario simulado

The Simulated Binary Crossover (SBX) is a popular operator used in continuous domains. In this work, an analysis of the SBX is presented, which involves the study of several diversity related issues, similarities among solutions and reflections that appear in the reproduction phase. Taking the analysis into account, the operator Non-Reflection Dynamic Simulated Binary Crossover (NRD-SBX) is proposed. This new operator extends SBX by implementing a dynamic model to control the diversity and reflections. NRD-SBX provides a higher intensification level than SBX and is able to adapt the exploration degree through the optimization process. The experimental validation is carried out with the WFG benchmark and several multi-objective EAs. The NRD-SBX operator shows a better performance than the original SBX.