Structures of Neural Network Effective Theories

3 May 2023  ·  Ian Banta, Tianji Cai, Nathaniel Craig, Zhengkang Zhang ·

We develop a diagrammatic approach to effective field theories (EFTs) corresponding to deep neural networks at initialization, which dramatically simplifies computations of finite-width corrections to neuron statistics. The structures of EFT calculations make it transparent that a single condition governs criticality of all connected correlators of neuron preactivations. Understanding of such EFTs may facilitate progress in both deep learning and field theory simulations.

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