# Introduction From this chapter, we will start the journey of deep learning. The key to deep learning lies in the construction of deep neural networks. If you build your own deep neural network from zero, the process will be very complicated. Therefore, in order to implement the deep learning model more conveniently, we need to study the use of some common frameworks. Currently in the deep learning community, the more popular frameworks are TensorFlow, Keras, PyTorch etc., each with their own unique characteristics. Thanks to the support of Google and the activeness of the large developer community, TensorFlow is a reliable platform and updates quite frequently. Studying the use of TensorFlow will help you build deep learning models conveniently.
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