针对实现各地区良性经济循环的必要条件,以DEA有效性判断为切入点,综合运用主成分分析和数据包络分析等方法,建立环境效率模型和C^2 R模型,运用Matlab、Excel、Spss等软件编程,得出了各环境效率指标对经济发展的贡献情况和实现区域良性经济循环的必要条件为:DEA有效和规模收益非减。
In this paper, DEA validity judgment is regarded as a point to find the requirements of virtue cycle of regional economy.On the basis of principal component analysis (PCA) and Data Envelopment Analysis (DEA), Eco-efficiency model and C2R model are established.By utilizing software Matlab , Excel and Spss, contributions made by eco-efficiency to economic development and requirements of virtue cycle of regional economy is figured out .The result is that DEA is effective and returns to scale will not lose.