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。

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Robin van Persie hit the crossbar and had another effort hacked off the line, while the much-maligned David De Gea produced an astonishing performance in the United goal, fending off every effort which came within his grasp.

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