Getting nan values while using response normalization layer

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The network training is fine without adding any contrast normalization layer 
(all types), but ones add the contrast normalization layers, after several 
iterations the net gets nan values.  I tried different values of the size, 
scale and pow values, and tried to place the layer before and after pooling 
layer. 

Original issue reported on code.google.com by zybzm...@gmail.com on 8 May 2013 at 7:44