Gradient Descent

• https://blog.csdn.net/weixin_40170902/article/details/80092628

• https://cloud.tencent.com/developer/article/1118673

• https://zhuanlan.zhihu.com/p/97873519

• https://zhuanlan.zhihu.com/p/147569674?utm_source=wechat_session&utm_medium=social&utm_oi=45678843658240

• https://towardsdatascience.com/a-visual-explanation-of-gradient-descent-methods-momentum-adagrad-rmsprop-adam-f898b102325c

• https://zhuanlan.zhihu.com/p/32230623

• https://blog.csdn.net/aws3217150/article/details/70214422

• https://zhuanlan.zhihu.com/p/114248570

• https://www.zhihu.com/question/354819140/answer/895186613

• http://gitlinux.net/2019-02-26-optimizers/#43-%E6%A2%AF%E5%BA%A6%E6%88%AA%E6%96%AD