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Table 2 Typical two-step PU learning algorithms.

From: Positive-unlabeled learning for the prediction of conformational B-cell epitopes

Algorithms

Step1

Step2

SEL

S-EM [19]

Spy

EM

Y

PEBL [22]

1-DNF

SVM

N

Roc-SVM [23]

Rocchio

SVM

Y

Biased SVM [24]

Naïve Bayesian

Biased SVM

N

  1. SEL: whether to select the final model from the iterated classifiers.