logistic回归为什么要使用sigmoid函数

https://www.baidu.com/link?url=LnDjrhLG7Fx6YVgR9WljUILkPZrIzOR402wr2goIS-ARtDv9TwZ2VYVbY74fyVpQlE22nZsMSJLhvNXhxnPNWQpKtPUlBk4SGM8EGjBX1WK&wd=&eqid=b9f03dd400028a0f000000025bc45630

https://blog.csdn.net/jinesse/article/details/50553870

原文地址:https://www.cnblogs.com/genggeng/p/9792691.html