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重新介绍 PyTorch
PyTorch is an open source machine learning library for Python, based on Torch, used for applications such as natural language processing. It is primarily developed by Facebook's artificial-intelligence research group, and Uber's "Pyro" software for probabilistic programming is built on it. PyTorch是一个基于Torch的Python开源机器学习库，用于自然语言处理等应用程序。 它主要由Facebook的人工智能研究小组开发。Uber的"Pyro"也是使用的这个库。
PyTorch is a Python package that provides two high-level features:
Tensor computation (like NumPy) with strong GPU acceleration
Deep neural networks built on a tape-based autograd system
You can reuse your favorite Python packages such as NumPy, SciPy and Cython to extend PyTorch when needed.PyTorch是一个Python包，提供两个高级功能：
- 具有强大的GPU加速的张量计算（如NumPy）
- 包含自动求导系统的的深度神经网络
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