Author(s)

Hengyuan Liu

Corresponding Author

Hengyuan Liu

ABSTRACT

This paper proposed a PSM(Q)-DID model based on quadratic discriminant analysis, which was under the framework of Difference In Difference (DID) and propensity score matching (PSM). Using panel data from 202 cities in China from 2005 to 2015, this paper evaluated the impact of smart cities on urban environmental pollution based on the PSM(Q)-DID model, and further compared with the regression results of the PSM-DID model. The contribution of this paper lies in that the PSM(Q)-DID model proposed has more accurate scoring ability, which is a richness of the existing policy evaluation methods, and the evaluation results based on this model are further confirmation of the pollution suppression effect of the Smart City Policy.

KEYWORDS

Smart City Policy Evaluation, Difference In Difference, Discriminant Analysis