Clustering of the sporulation temporal expression profiles of genes in the test set and genes predicted by the computational method. The box on the left shows the profiles of genes in the test set (group 1 and 2). The 115 ORFs predicted by the computational method were shown in the right box (group 2 to 5). Group 2 is the overlap between the test set and the predicted set. The 91 ORFs in the predicted set only give rise to three distinct clusters (groups 3 – 5).