Figure 5

Effect of the number of microarray experiments on the environmental stress data subset with 205 genes. Using SCPD as the evaluation criterion, we compared the extent of co-regulated genes using different numbers of microarray experiments on the subset of environmental stress data with 205 genes and 205 experiments at 20 clusters. The median z-scores (and hence, proportions of co-regulated genes) increase as the number of experiments increases, and MCLUST typically produces relatively high median z-scores. We observed very similar results using ChIP data as the evaluation criterion.