1. Use the quadratic cost function gradient causes of the disappearance of
2. cross-entropy cost function
What is the cross-entropy cost function
### gradient principle to solve the problem of disappearing
## 3. Summary
This is a summary of his first contact with the gradient disappears problem. The main problem is the disappearance of the gradient-induced secondary cost function, and then use the cross-entropy generation of add function to solve this problem, the principle of this process was a preliminary understanding.
For gradient other issues arising from the disappearance of problems and their solutions, we met during the subsequent summary.
