阻止型不良信息过滤器的研究与设计*

监控与过滤网上的不良信息可以有效地解决网络信息安全问题。针对阻止型不良信息过滤器目前存在的一些问题，诸如响应时间过长、精度不高等，提出利用基于多Agent及隐马尔科夫模型的过滤技术进行解决，并详细阐述了不良信息过滤器——Sniper的设计与实现。试验结果验证了Sniper的有效性。

Research and Design of an Illegal and Harmful Information Filter

The effective way to ensure online data security is to monitor and to filter the illegal and harmful information on the WWW.Aimed at the problems of current information filters,such as the long response time,the low precision and so on.Puts forward the solution based on the state-of-the-art techniques of multi-agent and Hidden Markov Model (HMM) and finally explains the design and implementation of a filter of harmful information:Sniper.Experimental results show the validity of Sniper.