Results of the simulations.

<p>Each row of panels represents the simulation type (simulation I, II, and III), and each column represents the external clustering validation indices: purity (PR), normalized mutual information (NMI), and Rand index (RI). The horizontal axis of each graph is the variance parameter defined in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1005509#pcbi.1005509.s001" target="_blank">S1 Text</a>, and the vertical axis is the external validation index. The bold lines and the bands indicate the mean and 95% confidence interval of the index for 100 replicates of each dataset.