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. 2016 Aug 30;2016:4628025. doi: 10.1155/2016/4628025

Table 1.

The average Q-scores of local structure prediction for the four structure alphabets.

Sec3 Sec8 PB DW
Number of letters 3 8 16 28

Single-layer model 0.756 0.593 0.564 0.432
Dual-layer model 0.765 0.614 0.585 0.456

The single-layer model uses the position specific score matrix (PSSM) as input and output probability of the structure alphabet letters. The dual-layer model adds an additional classifier, which uses the output of single-layer model as input and output final prediction. For both models, the support vector machine is used as the classifiers.