本书主要介绍深度学习的核心算法，以及在计算机视觉，语音识别、自然语言处理中的相关应用，适合深度学习从业人士或者相关研究生作为参考资料，也可以作为入门教程来大致了解深度学习的相关前沿技术(This book mainly introduces the core algorithms of deep learning, as well as relevant applications in computer vision, speech recognition and natural language processing. It is suitable for practitioners of deep learning or relevant graduate students as reference materials, and can also be used as an introductory course to roughly understand the cutting-edge technologies of deep learning)