Please notice the follow points!
(I) All the labels should be Natural numbers(From 0 starts).
(II) For each sequence,the length of the labels is equal to the length of residues.
(III) For binary classification, you need use 0,1 to represent the label and choose '2' in the number of labels.
(IV) For multiple classification such as four categories, you need represent the label as 0,1,2,3 and choose '4' in the number of labels.
(V) There is a space between two labels.
Binary Classification
Multiple Classification