hidden information短语⁴²⁰⁰⁵ 基本例句 隐藏信息 In the system, we get the hidden information by on-line or off- line analyzing the data in user log. According to the result of data mining, the performance of system is Evaluated. 并且对用户日志数据通过离线或在线的方式进行分析，得到用户的培训效果，以此分析评价系统性能。 fabiao