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Concerning the problem of noise interference in the mechanical equipment fault signal acquisition, a novel mechanical equipment fault diagnosis method of wavelet shrinkage threshold based on Bayesian estimation combined with EMD is proposed. The fault signal denoising characteristics of different scales are considered in the proposed method. A new threshold which is suitable for the situation of noise...
The popularity and accessibility of Sina Microblog have attracted a large number of spammers to conduct spamming behaviors. They can spread advertisements, disseminate pornography, virus and expose phishing. All of these behaviors are extremely harmful to legitimate users. It is necessary to detect spammers from legitimate users in Sina Microblog. In this paper, we defined two kinds of spammers, advertising...
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