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Welcome to this tutorial on PyTorch, a powerful and widely-used open-source machine learning framework. We will explore its core concepts, learn how to build and train neural networks, and leverage its capabilities for tasks like image classification. This tutorial also acknowledges the legacy of Caffe2, which was merged into PyTorch, bringing production-level features to the framework.

This tutorial is designed for software engineers, data scientists, researchers, and students interested in deep learning. It’s suitable for those wanting to learn a flexible, Python-friendly framework for building everything from simple models to state-of-the-art deep learning systems. It is also beneficial for those transitioning from other frameworks or looking to deploy models efficiently.

Before you begin, a good understanding of Python programming is essential. Familiarity with fundamental machine learning concepts (like training, testing, features, labels) and linear algebra/calculus basics will be helpful. Prior experience with NumPy is advantageous as PyTorch’s Tensors are similar. While not strictly required, some background knowledge of neural networks will make the concepts easier to grasp.