Advancing the Biological Plausibility and Efficacy of Hebbian Convolutional Neural Networks

• URL: http://arxiv.org/abs/2501.17266v1
• Date: Mon, 06 Jan 2025 12:29:37 GMT
• Title: Advancing the Biological Plausibility and Efficacy of Hebbian Convolutional Neural Networks
• Authors: Julian Jimenez Nimmo, Esther Mondragon,
• Abstract summary: The research presented in this paper advances the integration of Hebbian learning into Convolutional Neural Networks (CNNs) for image processing. Hebbian learning operates on local unsupervised neural information to form feature representations. Results showed clear indications of sparse hierarchical learning through increasingly complex and abstract receptive fields.
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• Abstract: The research presented in this paper advances the integration of Hebbian learning into Convolutional Neural Networks (CNNs) for image processing, systematically exploring different architectures to build an optimal configuration, adhering to biological tenability. Hebbian learning operates on local unsupervised neural information to form feature representations, providing an alternative to the popular but arguably biologically implausible and computationally intensive backpropagation learning algorithm. The suggested optimal architecture significantly enhances recent research aimed at integrating Hebbian learning with competition mechanisms and CNNs, expanding their representational capabilities by incorporating hard Winner-Takes-All (WTA) competition, Gaussian lateral inhibition mechanisms and Bienenstock-Cooper-Munro (BCM) learning rule in a single model. The resulting model achieved 76% classification accuracy on CIFAR-10, rivalling its end-to-end backpropagation variant (77%) and critically surpassing the state-of-the-art hard-WTA performance in CNNs of the same network depth (64.6%) by 11.4%. Moreover, results showed clear indications of sparse hierarchical learning through increasingly complex and abstract receptive fields. In summary, our implementation enhances both the performance and the generalisability of the learnt representations and constitutes a crucial step towards more biologically realistic artificial neural networks.

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