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. Author manuscript; available in PMC: 2012 Apr 19.
Published in final edited form as: Ann Appl Stat. 2011 Jun;5(2B):1159–1182. doi: 10.1214/11-AOAS476

Fig. 9.

Fig. 9

Comparison of voxel-wise predictive R2 (based on the validation data) of the sqrt(X) model (4.1), the log(1 + sqrt(X)) model (4.2) and V-SPAM (4.5). (a) Histograms of the predictive R2 value across voxels. They are displayed sideways to ease comparison. (b) Difference of predictive R2 values of V-SPAM (4.5): (left) sqrt(X) model (4.1); (right) log(1 + sqrt(X)) model (4.2).