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Therefore, an efficient way is to tag the unlabeled data and add it to the set. We applied the self-training SVM as a semi-supervised method for age estimation and introduced Plat scaling as the unlabeled data selection criterion in the self-training process. 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Estimating Age on Twitter Using Self-Training Semi-Supervised SVM
http://hdl.handle.net/20.500.12000/42185
http://hdl.handle.net/20.500.12000/42185