Factor is the lowest layer in the evaluation index system, which concrete the description of the layer indexes from the quantity, degree, quality and so on.
因素层是评价指标体系最低层，从量、度、质等方面具体描述了准则层指标的水平。
Based on fuzzy synthesis evaluation, the membership function of each index for underground space resource quality evaluation was constructed, and the degree of membership was determined.
采用模糊综合评估方法，构造了地下空间资源质量评估指标的隶属函数，并确定了隶属度，建立了权重向量与模糊关系矩阵复合运算的模糊综合评估模型。
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