6주차-Binary Classification

• Binary Classification

yes or no problem(True or False)
=> 문제 정의가 중요!

EX)

 

• Binary Classification with Linear Regression

위와 같은 상황을 방지하기 위해

 

• Logistic Regression

• Sigmoid Function

 

• Decision Boundary

• Sigmoid Function

• 1D

 

EX)

 

• Linear regression VS Logistic regression

 

• Non-linear Decision Boundary

 

• Loss Function for Logistic Regression

• Single Line form

• Gradient Descent for Logistic Regression

 

• Partial dervative of Wj