Average ranks of the six known enriched categories by different enrichment tests (over 10 simulations).

1Significance: measures of DE significance. The measures used include minus untransformed DE test -value, fold change, minus log-transformed DE test -value, p (d-log in the table header), and dichotomized DE -values (cut-off used was ).2Length: whether to use log-transformed lengths [] or original lengths (); a smooth function of length is used by GOseq for length corrections (the so-called probability weighting function, PWF).