Table 3.

Prediction performance of the protein flexibilities by different structure alphabets.

SAa	No. pob	No. nec	Sensitivity	Specificity	Precision	ROC
Sec3	6152	54737	0.6291	0.4543	0.1109	0.5457
Sec8	9468	51421	0.5887	0.5677	0.1942	0.5741
PB	10625	50264	0.6209	0.5521	0.2114	0.5901
DW	16012	44877	0.6399	0.5725	0.2586	0.6193

^aThe structure alphabet types.

^bThe number of positive samples (flexible residues).

^cThe number of negative samples (rigid residues).