Implemented five methods proposed by Resnik, Schlicker,         Jiang, Lin and Wang respectively for estimating GO semantic         similarities. Support many species, including Anopheles,         Arabidopsis, Bovine, Canine, Chicken, Chimp, Coelicolor, E coli         strain K12 and Sakai, Fly, Human, Malaria, Mouse, Pig, Rhesus,         Rat, Worm, Xenopus, Yeast, and Zebrafish.