Gao, Jiti; Linton, Oliver B.; Peng, Bin - 2022
In this paper, we consider a panel data model which allows for heterogeneous time trends at different locations. We … propose a new estimation method for the panel data model before we establish an asymptotic theory for the proposed estimation … sunshine data of U.K. respectively. Overall, we find the weather of winter has changed dramatically over the past fifty years …