- logistic regression cost function(single example)
- 图像分布
- logistic regression cost function(m examples)
- Writting cost function in a more convenient form with just one line
- To fit parameter θ
- Using gradient descent to minimize cost function
看上去和gradient descent for linear regression是一样的,但是其实只是形式一至,hθ(x)不一样,如上图所示,蓝色的hθ(x)为linear regression的,红色的为logistic regression