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Towards the Evolution of Multi-Layered Neural Networks: A Dynamic Structured Grammatical Evolution Approach
Current grammar-based NeuroEvolution approaches have several shortcomings. On
the one hand, they do not allow the generation of Artificial Neural Networks
(ANNs composed of more than one hidden-layer. On the other, there is no way to
evolve networks with more than one output neuron. To properly evolve ANNs with
more than one hidden-layer and multiple output nodes there is the need to know
the number of neurons available in previous layers. In this paper we introduce
Dynamic Structured Grammatical Evolution (DSGE): a new genotypic representation
that overcomes the aforementioned limitations. By enabling the creation of
dynamic rules that specify the connection possibilities of each neuron, the
methodology enables the evolution of multi-layered ANNs with more than one
output neuron. Results in different classification problems show that DSGE
evolves effective single and multi-layered ANNs, with a varying number of
output neurons
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