Title

Guided Self-Organization In Indirectly Encoded And Evolving Topographic Maps

Keywords

Adaptation; CPPNs; HyperNEAT; Learning; Neuroevolution; Plastic neural networks; Self-organization; Topographic maps

Abstract

An important phenomenon seen in many areas of biological brains and recently in deep learning architectures is a process known as self-organization. For example, in the primary visual cortex, color and orientation maps develop based on lateral inhibitory connectivity patterns and Hebbian learning dynamics. These topographic maps, which are found in all sensory systems, are thought to be a key factor in enabling abstract cognitive representations. This paper shows for the first time that the Hypercube-based NeuroEvolution of Augmenting Topologies (HyperNEAT) method can be seeded to begin evolution with such lateral connectivity, enabling genuine self-organizing dynamics. The proposed approach draws on HyperNEAT's ability to generate a pattern of weights across the connectivity of an artificial neural network (ANN) based on a function of its geometry. Validating this approach, the afferent weights of an ANN self-organize in this paper to form a genuine topographic map of the input space for a simple line orientation task. Most interestingly, this seed can then be evolved further, providing a method to guide the self-organization of weights in a specific way, much as evolution likely guided the self-organizing trajectories of biological brains. © 2014 ACM.

Publication Date

1-1-2014

Publication Title

GECCO 2014 - Proceedings of the 2014 Genetic and Evolutionary Computation Conference

Number of Pages

713-720

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1145/2576768.2598369

Socpus ID

84905675371 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84905675371

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