中文摘要：

随着互联网技术的迅猛发展,使用互联网服务的人越来越多。网络代理作为互联网中的一项重要应用其用户数量也与日俱增。通过代理浏览恶意内容,进行匿名攻击等恶意使用代理的现象日趋严重。为了防止被滥用,许多代理使用了内容审计分析技术。而内容审计带来的处理延迟和开销严重影响了服务质量。针对内容分析的性能瓶颈问题,提出基于用户信任的审计加速策略。通过访问时间,目标网站类型等多个维度对代理用户行为进行细腻度的刻画,并充分考虑历史行为的累计效应,建立了多层次的用户信任模型,在完成内容审计功能的同时,提高基于内容分析可信代理的服务性能。

英文摘要：

With the rapid growth of Internet technology,more and more people has enjoyed Internet service. As a important application,the number of the user of network proxy service has grew. The phenomenon of network proxy service abuse is more and more serious. In order to avoid network proxy service abuse,some proxy server adopt content analysis technology.The traditional analytical auditing based on the content is time consuming,which can impact the user＇s experience. In this paper a speed- up method of Content Audit based on user＇s trust has been proposed. Through the access time,the type of the target site and other dimensions,the user behavior has been exquisite portrayed,and the information of user historical actions has been token account of,then a multi- layered trust model has been constructed,which can improve the network proxy service quality.