Study of Fuzzy Evaluation Method on Ecological civilization construction Based on Grey Interval Number

Ecological civilization evaluation is an important part of the sustainable development strategy. However, because of subjective and objective reasons, it is becoming increasing clear that much data or information is of poor quality, which has serious effects on the research results. With the analysis on the cause and process of the low quality data, this article presents a fuzzy evaluation method based on gray interval number, which would assess the ecological civilization performance. The application of data-gray-correction model could change the original statistics into gray interval number to reduce the influence of statistical error. A modified FAHP is used to capture and convert experts’ subjective judgment. A modified TOPSIS on three parameters interval-valued sets is applied to rank the objects. The research show that: corrected gray interval number could contain much more information than original crisp data; compared to traditional assessment algorithms, results by fuzzy evaluation method based on interval number would match more reality.