关键词: 噪声环境, 噪声模型, 遗传算法, 函数优化

Abstract: Genetic algorithm realized effectively in noisy environment is great important for increasing its practical application value.This paper describes noisy environment，and enumerate some representative noise models which exhibites widely varying characteristics.Both the influence of GA in noisy environment and the reason are theoretically analyzed and simulated in computer by studying function optimal and schema theorem in noisy environment.Lastly，performances of SGA，NicheGA and PGA are compared and analyzed by putting them in Gaussian-noisy environment.

Key words: noisy environment, noisy model, genetic algorithm, function optimization