According to the characteristics of microblog spammers,this paper proposes a semi-supervised spammer identification method based on cost-sensitive learning in latent space. Firstly,it selects twenty-two features of microblog account from perspectives of contents,activities and social relations. Then,it obtains latent account vectors using matrix factorization method and constructs a novel cost-sensitive semi-supervised classification model with the maximum margin theory in latent space. In addition,a social...
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