“…Therefore, they can be more effective in dealing with spammers' tactics. Recently, various machine-learning techniques have been used for spam filtering, including support vector machines [13,22,46], memory-based learning [6,35,41], Ripper rule-based learning [12,33], boosting decision trees [10], rough sets [49], neural networks [11,48], Bayesian classifiers [5,6,23,33,34,36,37], and fuzzy logic [17,32]. Among these methods, Bayesian classifiers have been widely applied as one of the most effective spam filters [19,23].…”