The first key problem of the neural network mode recognition system emphatically have studied, namely mode pretreatment and characteristic drawn, then it shows the basic K-L varies to realizy PCA and how to realize the method step of PCA especially;是什么意思_The first key problem of the neural network mode recognition system emphatically have studied, namely mode pretreatment and characteristic drawn, then it shows the basic K-L varies to realizy PCA and how to realize the method step of PCA especially;在线翻译_英语_读音_用法_例句