Is There Another New Factor in Evolution?

Harvey, Inman (1997) Is There Another New Factor in Evolution? Evolutionary Computation, 4 (3). pp. 311-327. ISSN 10636560

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For 100 years it has been recognised that interactions between learning and evolution, such as the Baldwin effect (Baldwin, 1896), can be subtle and often counter-intuitive. Recently a new effect has been discussed: it is suggested that evolutionary progress towards one specific goal may be assisted by lifetime learning on a different task which may or may not be 'uncorrelated' (parisi, Nolfi & Cecconi, 1992). Here the phenomenon is reproduced in a simple scenario where the tasks are indeed uncorrelated -- 'Another New Factor' does indeed exist. The effect is then explained as being due to recovery from weight-perturbations, caused by mutation, in a neural network. It is a special case of a recently disciovered relearning effect (Harvey & Stone, 1996), the spontaneous recovery of perturbed associations by learning uncorrelated tasks.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Depositing User: Inman Harvey
Date Deposited: 06 Feb 2012 20:24
Last Modified: 08 Jun 2012 09:09
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