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Improving the precision of the keyword-matching pornographic text filtering method using a hybrid model
Author(s): 
Pages: 100-107
Year: Issue:  9
Journal: Journal of Zhejiang University Science B

Keyword:  Pornographic text filteringContent based filteringInformation filteringNetwork content security;
Abstract: <正> With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applications which can block or filter such information are used. Approaches in those systems can be roughly classified into two kinds: metadata based and content based. With the development of distributed technologies, content based filtering technologies will play a more and more important role in filtering systems. Keyword matching is a content based method used widely in harmful text filtering. Experiments to evaluate the recall and precision of the method showed that the precision of the method is not satisfactory, though the recall of the method is rather high. According to the results, a new pornographic text filtering model based on reconfirming is put forward. Experiments showed that the model is practical, has less loss of recall than the single keyword matching method, and has higher pr
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