English

Convolutional Neural Generative Coding: Scaling Predictive Coding to Natural Images

Computer Vision and Pattern Recognition 2023-02-07 v2 Machine Learning

Abstract

In this work, we develop convolutional neural generative coding (Conv-NGC), a generalization of predictive coding to the case of convolution/deconvolution-based computation. Specifically, we concretely implement a flexible neurobiologically-motivated algorithm that progressively refines latent state feature maps in order to dynamically form a more accurate internal representation/reconstruction model of natural images. The performance of the resulting sensory processing system is evaluated on complex datasets such as Color-MNIST, CIFAR-10, and Street House View Numbers (SVHN). We study the effectiveness of our brain-inspired model on the tasks of reconstruction and image denoising and find that it is competitive with convolutional auto-encoding systems trained by backpropagation of errors and outperforms them with respect to out-of-distribution reconstruction (including the full 90k CINIC-10 test set).

Keywords

Cite

@article{arxiv.2211.12047,
  title  = {Convolutional Neural Generative Coding: Scaling Predictive Coding to Natural Images},
  author = {Alexander Ororbia and Ankur Mali},
  journal= {arXiv preprint arXiv:2211.12047},
  year   = {2023}
}

Comments

Revisions/updates, expanded appendix

R2 v1 2026-06-28T06:33:54.458Z