目前网络信息审计系统大多基于文本信息的过滤，但不良信息的提供者将不良信息嵌入到图像或直接以图像文件，绕过监控。
At present, network information audit system is almost based on text information filtering, but badness information is embedded into image or image file directly by badness information provider.
在定义文法的基础上，基于状态转换方法，给出了一种不良信息文本过滤模型。
After grammatical rules are defined, a method of the state conversion is founded. Based on it, a model of filtering bad text information is presented.
网络信息过滤技术为拦截不良信息和优化网络信息资源提供了技术基础。
The filtering technology of net information provides technological basis for intercepting and optimizing the net information resources.
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