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在城市群区域城际轨道交通线网规划综合评价中,构建一种新的基于模糊集-熵组合赋权,应用灰色系统理论进行评价的模糊集-熵-灰色系统理论组合评价模型来进行综合评价;首先应用梯形模糊数确定各指标的主观权重,引入熵值理论确定各指标的客观权重;然后采用线性加权法将各指标的主观权重和客观权重进行线性加权求和得到组合权重;最后应用灰色系统理论建立灰色关联模型、规范评价指标值、计算灰色关联系数和灰色关联度,根据灰色关联度值的大小来优选线网规划方案。
In the comprehensive evaluation of intercity rail transit network planning in urban agglomeration area, a new combined evaluation model based on fuzzy set-entropy combination weighting and gray system theory for evaluation is proposed to synthesize Firstly, trapezoidal fuzzy number is used to determine the subjective weight of each index, and the entropy theory is introduced to determine the objective weight of each index. Then linear weighting method is adopted to weight the subjective weight and objective weight of each index by linear weighted summation. Finally, Gray system theory establishes the gray relational model, standardizes the evaluation index value, calculates the gray correlation coefficient and the gray relational degree, and optimizes the network plan according to the gray relational value.