qq_38963685的博客

逻辑回归与线性回归比较：*logistic Regressionlinear Regressionstep1:建模fw,b(x)=σ(∑iwixi+b)f_{w,b}(x)=\sigma(\sum_{i}{w_ix_i+b})fw,b​(x)=σ(∑i​wi​xi​+b)fw,b(x)=∑iwixi+bf_{w,b}(x)=\sum_{i}{w_ix_i+b}fw,b​(x)=∑i​wi​xi​+boutput:由于借助了sigmoid函数，取值仅能为0-1output