Table 1.

The four CoEPrA data sets for classification

Tasks	Traininga		Predictionb		Lc
# (literature with pIC50 values)	Pos	Neg	Pos	Neg
1d(Doytchinova et al., 2005)	45	44	44	44	9
2d(Hattotuwagama et al., 2004)	37	39	38	38	8
3d(Doytchinova and Flower, 2002)	67	66	67	66	9
4 (Source unknown)	19	92	19	92	9

^aNumber of ligands in training set with known classification of binding (pos) and non-binding (neg) oligo-peptides.

^bNumber of ligands in prediction set; classification of binding (pos) and non-binding (neg) oligo-peptides was unraveled only after termination of contest.

^cLengths of oligo-peptides for the four classification tasks.

^dpIC50 value available.