通过将主观的和客观的度量指标统一在一个评价体系中，使他们不再是孤立的分析，也容易实现评价过程自动化，而且综合评价的指标是可扩展的，可简单地实现与原有其他指标的综合。其次，此算法最终以一个统一的综合指标呈现给用户，便于用户比较选择。

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