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built a neural network from scratch using numpy to understand backpropagation

hey everyone! recently built a 2 → 3 → 1 XOR neural network using NumPy, without PyTorch or TensorFlow. wanted to understand backpropagation properly, so I implemented the mathematics and gradient descent manually. trained it for 5,000 epochs and achieved 4/4 correct classifications. the repo inclu…

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  1. 2026-10-19 13:28 · r/deeplearning
    built a neural network from scratch using numpy to understand backpropagation

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