https://www.coursera.org/deeplearning-aihttps://mooc.study.163.com/university/deeplearning_ai/#/c视频来源于网络，视频和字幕在陆续更新，有错误也可以留言，会尽量修正笔记:https://github.com/fengdu78/deeplearning_ai_books离线视频链接已失效。。