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. Author manuscript; available in PMC: 2013 Nov 21.
Published in final edited form as: IEEE Trans Pattern Anal Mach Intell. 2013 Aug;35(8):10.1109/TPAMI.2013.19. doi: 10.1109/TPAMI.2013.19

Fig. 15.

Fig. 15

Considering 20 face images from Caltech 101, we examine setting of sparseness parameters; unless otherwise stated, b = 102, f = 10−5 and h = 10−5. Parameters h and f are varied in (a) and (b), respectively. In (c), we set e = 10−6 and f = 10−6 and make hidden units unconstrained to test the influence of parameter b on the model's sparseness. In all of cases, we show the Layer-2 filters (ordered as above) and an example reconstruction.