Evolving Spiking Networks with Variable Resistive Memories

lib:171936f44198804f (v1.0.0)

Authors: Gerard David Howard,Larry Bull,Ben de Lacy Costello,Andrew Adamatzky,Ella Gale
ArXiv: 1505.04357
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Abstract URL: http://arxiv.org/abs/1505.04357v1

Neuromorphic computing is a brainlike information processing paradigm that requires adaptive learning mechanisms. A spiking neuro-evolutionary system is used for this purpose; plastic resistive memories are implemented as synapses in spiking neural networks. The evolutionary design process exploits parameter self-adaptation and allows the topology and synaptic weights to be evolved for each network in an autonomous manner. Variable resistive memories are the focus of this research; each synapse has its own conductance profile which modifies the plastic behaviour of the device and may be altered during evolution. These variable resistive networks are evaluated on a noisy robotic dynamic-reward scenario against two static resistive memories and a system containing standard connections only. Results indicate that the extra behavioural degrees of freedom available to the networks incorporating variable resistive memories enable them to outperform the comparative synapse types.

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