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arXiv · 2306.01885

Multifunctionality in a Connectome-Based Reservoir Computer

Jacob Morra·Andrew Flynn·Andreas Amann·Mark Daley
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Abstract

Multifunctionality describes the capacity for a neural network to perform multiple mutually exclusive tasks without altering its network connections; and is an emerging area of interest in the reservoir computing machine learning paradigm. Multifunctionality has been observed in the brains of humans and other animals: particularly, in the lateral horn of the fruit fly. In this work, we transplant the connectome of the fruit fly lateral horn to a reservoir computer (RC), and investigate the extent to which this 'fruit fly RC' (FFRC) exhibits multifunctionality using the 'seeing double' problem as a benchmark test. We furthermore explore the dynamics of how this FFRC achieves multifunctionality while varying the network's spectral radius. Compared to the widely-used Erdös-Renyi Reservoir Computer (ERRC), we report that the FFRC exhibits a greater capacity for multifunctionality; is multifunctional across a broader hyperparameter range; and solves the seeing double problem far beyond the previously observed spectral radius limit, wherein the ERRC's dynamics become chaotic.

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Jacob Morra, Andrew Flynn, Andreas Amann, Mark Daley. 2023-06-02. Multifunctionality in a Connectome-Based Reservoir Computer. https://arxiv.org/abs/2306.01885

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