Hello,
You can also find an short example of back propagation algorithm implemented in Smalltalk in chapter 21 of "Advanced Smalltalk" written by J. Pletzke.
Hope that helps,
Florent

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Date: Sat, 4 May 2013 13:19:52 -0300
From: aivan2005@gmail.com
To: pharo-users@lists.gforge.inria.fr
Subject: [Pharo-users] Artificial intelligence framework

Hi guys, how are you?. Do you know if there is a framework who simulates neural networks?.�

Thanks in advance

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Atte. Iv�n Guevara