✦ LIBER ✦

Combining Hebbian and reinforcement learning in a minibrain model

✍ Scribed by R.J.C. Bosman; W.A. van Leeuwen; B. Wemmenhove

Book ID: 103853641
Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 195 KB
Volume: 17
Category: Article
ISSN: 0893-6080
DOI: 10.1016/j.neunet.2003.07.007

No coin nor oath required. For personal study only.

✦ Synopsis

A toy model of a neural network in which both Hebbian learning and reinforcement learning occur is studied. The problem of 'path interference', which makes that the neural net quickly forgets previously learned input -output relations is tackled by adding a Hebbian term (proportional to the learning rate n) to the reinforcement term (proportional to d) in the learning rule. It is shown that the number of learning steps is reduced considerably if 1=4 , n=d , 1=2; i.e. if the Hebbian term is neither too small nor too large compared to the reinforcement term.

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