Comprehensive Evaluation of Non-waste Cities Based on Two-Tuple Mixed Correlation Degree

Under the background of vigorously promoting the construction of ecological civilization, the importance of constructing the "non-waste cities" becomes increasingly prominent. Taking 39 cities in the Yangtze River Economic Zone as the research objects, this paper establishes a new evaluation index system for "non-waste cities," and proposes a multi-source, heterogeneous and multi-attribute decision-making method for the comprehensive evaluation of "non-waste cities." Specifically, the evaluation index system of "non-waste cities" is constructed from four aspects: economic level, environmental pollution, resource consumption, and waste utilization. Considering that there is the characteristic of multi-source heterogeneity for the attribute values (that is, real numbers, interval numbers, and fuzzy linguistic variables coexist), the multi-source heterogeneous data are uniformly converted into two-tuples, and then a new two-tuple entropy weight method is proposed to determine the weights of evaluation attributes. Moreover, combining the traditional grey relational analysis method with TOPSIS, a multi-source, heterogeneous and multi-attribute decision-making method based on two-tuple mixed correlation degree (TTMCD-MSHMADM) is proposed to evaluate the "non-waste cities," and an empirical analysis is made for the 39 cities in the Yangtze River Economic Zone. The result gives a theoretical basis for the formulation of sustainable economic development policies in the Yangtze River Economic Zone, and provides a decision reference for selecting the demonstration cities of "non-waste cities."