Table 3. Performance of the protein-class predictor when trained on simple amino-acid composition.

	LOO cross-validation	Five-fold cross-validation	MCC
All classes	74.84	75.72	0.805
α -helical	88.68	85.89	0.896
α -barrel	48.97	51.23	0.629
Non-membranous	81.68	79.99	0.816