Table 3 Estimates of ${\widehat{\pi }}_0$ based on the prostate tumor data set from the Stanford microarray database. The first four rows are estimated based on the four partitions of the whole data set while the last row the is based on the data set. The means and standard errors (5th and 6th rows) are calculated based on the estimates of the four sub-data sets.

From: An improved procedure for gene selection from microarray experiments using false discovery rate criterion