Figure 5.

Comparison of clustering accuracy using hard correlation threshold for beta-distributed noise simulated for heterogeneous (A,C) and homogeneous (B,D) cluster sizes with 10 clusters (A,B) and 20 clusters (C,D). The beta noise parameters are (3, 2) for the signal and (2, 3) for the background. One hundred replicate simulations are created and clustering is carried out for each of the hard threshold cutoffs of the correlation matrix (horizontal axis). The accuracy of the clustering methods (average on the vertical axis) is based on the Rand index of the cluster identities compared with the true simulated cluster identities.