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Pre-training of DNN layer-1 weights. Blue histogram counts the maxima of mutual information (M) over all pairs (PT, RND), PT - map with pre-trained weights, RND - map with randomly initialized weights, where the pre-training has been done using de-nosing auto-encoder (DAE) architecture. The yellow histogram shows the counts of M in the opposite case (RND, PT) when for each randomly initialized feature map, the maximal M match has been searched within PT maps.
