The experimental setting is similar with<cite> Dasgupta & Ng (2009)</cite> . We perform active learning for five iterations and select twenty of the most uncertainty reviews to be queried each time. Then the ADN is re-trained on all of labeled and unlabeled reviews so far with semisupervised learning. At last, we can decide the label of reviews x according to the output h N (x) of the ADN architecture as below: