说明：  这是我们学校一位大牛的讲稿，是关于神经网络的，对于学习神经网络的童鞋们是福音，现在与大家共享，有问题大家一起讨论
(This is our school a large cattle speech on neural network learning neural network of children' s shoes is the gospel, and now share with you, there are problems we can discuss)