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In light of properties of the GM (1, 1) and the linear regression model, this study established a GM (1, 1)-linear regression prediction model. It is really a good model for China's GDP forecast because it greatly overcomes the defects in the GM (1, 1) and the linear regression model and has a better effect.
City cycle economy is a sustainable development strategy in coordinating comprehensive development among economy, ecology and society and realizing that the city, man and nature are in harmonious. On the basis of the establishment of a reasonable economic efficient city appraisal target system, we applied data envelopment analysis to calculate the city loop economic development efficiency of 17 cities...
Based on the theory of traditional DEA, we built a super-efficient mixed DEA model, which, together with the optimal partition, builds the super-efficient mixed DEA cluster model. This model can simultaneously deal with those evaluation indicators meeting the cone and that does not meet the cone, by removing the decision-making units of self-constraints, we obtain the absolute sorting of index for...
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