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Original Article

Generalisation and discrimination emerge from a self-organising componential network: a speech example

Pages 425-440 | Received 24 Jul 1996, Published online: 09 Jul 2009
 

Abstract

It is demonstrated that a componential code emerges when a self-organising neural network is exposed to continuous speech. The code's components correspond to substructures that occur relatively independently of one another: words and phones. A capability for generalisation and discrimination develops without having been optimised explicitly. The componential structure is revealed by optimising a necessarily complicated nonlinear moment of the data's distribution, equal to the mean-squared output response of a multi-layered network of simple threshold neurons. Earlier analytical work had predicted that componential codes, generalisation and discrimination should emerge from the self-organisation of threshold neurons of this form, assuming certain properties of the pattern-space distribution of the data.

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