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Large Language ModelsOpen-Source AIr/MachineLearningPublished: Sep 3, 2026, 16:01 JST1 min read

C++ PCN library nears backprop accuracy

C++ PCN library nears backprop accuracy

A developer built Deepity, a C++ machine learning library, to test Predictive Coding Networks (PCNs), an alternative to backpropagation. On MNIST (50 epochs), Deepity's DKPPCN achieved 97.73% test accuracy in 59.5s, close to PyTorch backprop's 98.27% in ~70s.

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