膜系遗传算法设计中,提出了辅助交叉算子和一种动态操作策略,随群体进化状态的改变,相应地改变选择操作与变异操作方法;同时,辅助交叉算子发挥了最优个体在进化搜索中的引导作用。超宽增透膜的设计结果表明,这种改进算法对群体适应值的快速提高、跳出局部极值的作用是显著的。
An improved genetic algorithm in design of optical thin films is proposed, which includes an assistant crossover operator and a new operation strategy. The strategy is that selection and mutation operation methods are changed correspondingly along with changed colonyrs evolution status. Also, assistant crossover operator fully utilize the leading affect of the most excellent individual in the searching process. Design results of anti-reflective coatings show that the improved algorithm discussed in this paper has a remarkable effect on fast improvement of the colony fitness and escape from local extreme.