Caffe原来叫：Convolutional Architecture for Fast Feature Embedding
官网的个人翻译：http://blog.csdn.net/fengbingchun/article/details/49535873
NG的英文教程：http://ufldl.stanford.edu/tutorial/supervised/MultiLayerNeuralNetworks/
NG的中文教程：http://ufldl.stanford.edu/wiki/index.php/UFLDL%E6%95%99%E7%A8%8B