优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好
He said it was hoped the scheme could be expanded into island-wide services, with the pilot offering health and care services "a blueprint" to roll it out in other areas.
。下载安装 谷歌浏览器 开启极速安全的 上网之旅。对此有专业解读
Rapid Pro Power Bank
输入：nums = [2,1,2,4,3]