Fuzzy; Analytic hierarchy; Risk assessment; Weight.

模糊；层次分析；风险评价；权重。

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The fuzzy weighted average operations are common ones in the assessment and decision analysis when the value and weight are described to triangular fuzzy number.

定义了满足权重要求的模糊权重向量，利用三角模糊数的截集，给出了模糊加权平均数的计算原理、步骤和一种简便的近似方法。

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Conclusion Determining the reasonable weight of evaluation index and applying fuzzy comprehensive assessment method in evaluation of the in-patients satisfaction can make the results more credible.

结论合理的确定评价指标权重，并运用模糊综合评价研究住院病人满意度，结果更具可信性。

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