根据评价结果，指出了该系统有效性可进一步提高的建议。
Based on the evaluation results, this paper makes proposals that the system can be further improved.
碰撞检测对约束求解产生影响，通过改变约束求解顺序或改变约束链，达到对约束系统有效性的维护。
Collision has an effect on constraint solution, so maintaining validity of constraint system is accomplished by modifying constraint solution sequence or constraint chain.
最后，您应当直接度量用户群在查找相关信息方面的满意度，从而评估系统的有效性。
Finally, you should evaluate the system's effectiveness by directly measuring the user community's satisfaction in finding information of interest.
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