Neural networks and deep learning Chapter 3: linear model reading questions

1. What is the decision boundary ？

2.logistic regression What is the function of the activation function of ？

3.logistic regression Formula ？

4.softmax and logistic Similarities and differences of regression , Is it equivalent in two classifications ？

5. Describe three categories SVM

6. The function of kernel function ？

7. square ,hinge, Cross entropy , perceptron ,0-1 What scenarios are applicable to losses , What are the similarities and differences