期刊
EXPERT SYSTEMS WITH APPLICATIONS
卷 36, 期 7, 页码 10206-10222出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2009.02.037
关键词
Spam filtering; Online learning; Bag-of-words (BoW); Naive Bayes; Image spam
类别
资金
- Bolsa Pesquisa program [20060519110414a]
- FAPEMIG
- CNPq
In this paper, we present a comprehensive review of recent developments in the application of machine learning algorithms to Spam filtering, focusing on both textual- and image-based approaches. Instead of considering Spam filtering as a standard classification problem, we highlight the importance of considering specific characteristics of the problem, especially concept drift, in designing new filters. Two particularly important aspects not widely recognized in the literature are discussed: the difficulties in updating a classifier based on the bag-of-words representation and a major difference between two early naive Bayes models. Overall, we conclude that while important advancements have been made in the last years, several aspects remain to be explored, especially under more realistic evaluation settings. (C) 2009 Elsevier Ltd. All rights reserved.
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