1 – )

It is known that filters obtained by RBM, AE, or kmeans yield gabor like filters. Is there any evidence of the “superiority” of one set of filters vs the others?

2 – )

Say we have a model that can be stacked. Sometimes adding a layer does not really improve the performance. Would it be useful to augment the size of the receptive fields and somehow combine it with the previous receptive field size? (eg combine 5×5 patches & 7×7 patches)


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