中文说明：利用GA优化BP算法，主要是优化阈值和权重。利用GA优化BP算法，主要是优化阈值和权重。利用GA优化BP算法，主要是优化阈值和权重。利用GA优化BP算法，主要是优化阈值和权重。利用GA优化BP算法，主要是优化阈值和权重。
English Description：
GA is used to optimize BP algorithm, mainly to optimize the threshold and weight. GA is used to optimize BP algorithm, mainly to optimize the threshold and weight. GA is used to optimize BP algorithm, mainly to optimize the threshold and weight. GA is used to optimize BP algorithm, mainly to optimize the threshold and weight. GA is used to optimize BP algorithm, mainly to optimize the threshold and weight.