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. Author manuscript; available in PMC: 2015 Oct 13.
Published in final edited form as: Inf Process Med Imaging. 2013;23:86–97. doi: 10.1007/978-3-642-38868-2_8

Fig. 1.

Fig. 1

Heat map of errors for age prediction (lower is better), used to tune parameters. Units are in years. We found that for most tests, a sparsity of 0.04–0.05 and a cluster threshold of 100–250 generally provided the most stable results.