We compare the classification performance of ADN with five representative classifiers, i.e., Semi-supervised spectral learning (Spectral) (Kamvar et al., 2003) , Transductive SVM (TSVM), Active learning (Active) (Tong and Koller, 2002) , Mine the Easy Classify the Hard (MECH)<cite> (Dasgupta and Ng, 2009)</cite> , and Deep Belief Networks (DBN) (Hinton, et al., 2006) .