BERT-PPII: The Polyproline Type II Helix Structure Prediction Model Based on BERT and Multichannel CNN

Table 1

The dataset under strict definition (Strict_data).

Dataset	Number of sequence	Number of PPII	Number of non-PPII	Total
Training set	6561	36622	1494487	1531109
Test set	1640	9068	382819	391887
Independent test set	920	4855	201537	206392