Internet

On the basis of combing the traditional policy effect evaluation methods such as fixed effect model, instrumental variable, difference in differences, regression discontinuity design and synthetic control method, this paper investigates policy evaluation methods under multidimensional spillover effects and emphasizes the unique advantages of spatial network models in addressing the challenges of multidimensional spillover effects.

Innovation is the primary driving force behind development. In the Internet era, innovation knowledge spillover is faced with two paradoxes: One is the increasing frequency of ‘online communication’ and the decreasing opportunity of ‘offline communication’, and the other is the insufficient innovation effect of ‘codified knowledge’ and the limited communication channel of ’tacit knowledge’.