Diversity Enhancing Genetic Algorithm(DEGA)is presented to prevent premature convergence of GA,which introduced the ideas of affinity from immune system and cataclysm from biologic evolution process.

• 引入免疫系统“亲和度”的概念和生物进化过程中的“灾变”概念,提出一种强多样性的遗传算法来克服早熟收敛。