说明：  邱锡鹏的《神经网络与深度学习》讲义，指导大家对神经网络与深度学习方向有一个全面的了解，希望对这方面有需要的同学有所帮助吧！
(Qiu Xipeng's "neural network and deep learning" handout guides you to have a comprehensive understanding of neural network and deep learning direction. I hope it can help the students in need in this respect!)