BP网络进行花瓣分类,训练方法有传统最速下降法和LM法。最速下降法在线更新，有过拟合的问题。LM法，采用批量更新。-BP network petals classify traditional training methods of steepest descent method and LM method. Steepest descent method online updates, there is the problem of over-fitting. LM method, using