Optimising the Topology of Complex Neural Networks

author: Robert Griffioen, Project-team TAO, INRIA - The French National Institute for Research in Computer Science and Control
published: Dec. 3, 2007,   recorded: October 2007,   views: 5422

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In this paper, we study instances of complex neural networks, i.e. neural networks with complex topologies. We use Self-Organizing Map neural networks whose neighbourhood relationships are defined by a complex network, to classify handwritten digits. We show that topology has a small impact on performance and robustness to neuron failures, at least at long learning times. Performance may however be increased by artificial evolution of the network topology. In our experimental conditions, the evolved networks are more random than their parents, but display a more heterogeneous degree distribution.

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