机器学习好的入门文章

卷积神经网络

https://mp.weixin.qq.com/s?__biz=MzA3MzI4MjgzMw==&mid=2650728746&idx=1&sn=61e9cb824501ec7c505eb464e8317915&scene=0#wechat_redirect

卷积神经网络

http://www.jeyzhang.com/cnn-learning-notes-1.html