(a)-(c). The ranking of the genes in the benchmark sets against the overall ranking in the four yeast datasets. (a) Ranking in B1, (b) ranking in B2, and (c) ranking in B3. Red line is for the alpha dataset, green line is for the cdc15 dataset, blue line is for the cdc28 dataset, and black line is for the elutriation dataset. We see that many of the genes in the benchmark sets have no observable periodicity.