c=[1;8;4;1;2;7;6;5;3;5;4;8;4;1;6;3]; a=[]; b=[];
Sun Dec 08 14:33:17 CST 2019
Sun Dec 27 12:50:28 CST 2020
Tue Oct 13 12:37:52 CST 2020
Fri Apr 09 19:08:33 CST 2021
Fri May 19 20:51:20 CST 2017
Mon Oct 22 09:37:11 CST 2018
Wed Nov 08 19:46:13 CST 2017
107 3.4.2常见的激活函数及图像 1、sigmoid 激活函数 函数的定义为：
Fri Jun 14 02:40:58 CST 2019
Tue Dec 17 09:29:38 CST 2019
Tue Apr 05 18:18:21 CST 2016
Sun Jul 26 05:58:42 CST 2020
Sun Sep 29 14:28:31 CST 2019
Wed Oct 16 04:16:37 CST 2019
Tue Mar 03 06:53:26 CST 2020
Sun Aug 04 11:31:03 CST 2019
Sun Nov 17 17:44:06 CST 2019
Sat Aug 08 03:05:32 CST 2020
