说明：  这是我在参加2013阿里技术嘉年华后对深度学习这一专题的认识与介绍，希望能为朋友们学习深度学习提供帮助。
(This is my technique after attending the 2013 Fiesta Ali depth study on the topic of understanding and presentation, hoping to learn the depth of learning for friends to help.)