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JACIII Vol.2 No.6 pp. 178-184
doi: 10.20965/jaciii.1998.p0178
(1998)

Paper:

Self-organization in Cortical Maps & EM-learning

Francesco Frisone, Pietro G. Morasso, and Luca Perico

University of Genova, Dept. of Informatics, Systems, lecommunications Via Opera Pia 13, 16145 Genova (IT)

Received:
April 28, 1998
Accepted:
August 29, 1998
Published:
December 20, 1998
Keywords:
Self-organization, Hebbian learning, Cortical maps, Population code, EM-learning
Abstract

Starting from the problem of density estimation, it is shown that Expectation Maximization (EM) learning can be considered a Hebbian mechanism. From this, it is possible to outline a theory of self-organization of cortical maps, which is based on a well-defined optimization process and preserves biologically desirable characteristics such as local computation and uniform treatment of input and lateral connections. A thalamocortical network is described that implements the theory in a fully distributed manner: it uses cortical dynamics for the E-step and Hebbian adaptation of cortico-cortical connections at steady state for the M-step.

Cite this article as:
Francesco Frisone, Pietro G. Morasso, and Luca Perico, “Self-organization in Cortical Maps & EM-learning,” J. Adv. Comput. Intell. Intell. Inform., Vol.2, No.6, pp. 178-184, 1998.
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