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. Author manuscript; available in PMC: 2014 Oct 10.
Published in final edited form as: J Mach Learn Res. 2014 Jan 1;15(1):445–488.

Figure 6.

Figure 6

Speed-ups for CNJGL and PNJGL on a simulation set-up with p = 500 and n1 = n2 = 250. The true inverse covariance matrices are block-diagonal with two equally-sized sparse blocks. The x-axis in each panel displays the number of blocks into which the CNJGL or PNJGL problems are decomposed using the sufficient conditions; this is a surrogate for λ1. The y-axes display (a): the ratio of run-times with and without the sufficient conditions; (b): the true positive ratio of the edges estimated; and (c): the total number of true positive edges estimated.