关键词: 城市创新, 政府大数据, 政府传播, 仿真实验, 双重差分

Abstract: China's urban innovation is facing the obvious problems of unbalanced development and poor coordination. As a treasure house of public information resources, government big data is not only a key factor to empower urban innovation, but also a key factor to realize collaborative innovation. From the perspective of government information dissemination, this paper identifies the key factors that affect the effect of government information dissemination through the Netlogo simulation experiment, and integrates the factors into the accumulation function of enterprises public information capital, so as to expand the endogenous growth model of enterprise horizontal innovation and explore the micro mechanism of government big data empowering urban innovation. Moreover, this paper utilizes the differenceindifference method to examine effect of “the national pilot policy of information benefiting the people”, a program implemented in 2014, by employing 2010—2016 China's urban panel data. The theoretical research shows that: by encouraging the government to disseminate information and optimizing the information dissemination environment, the effect of government information dissemination can be effectively improved, so as to enrich the accumulation of public information capital of enterprises and reduce the time lag of information dissemination, accelerate enterprise innovation, thus promote urban innovation. The empirical research shows that the average promotion effect of this pilot policy on the innovation index of pilot cities is about 29%. Therefore, it is feasible to popularize and deepen this pilot project in an orderly way and take various measures to promote the optimization of the national innovation environment and institutional supply.

Key words: urban innovation, government big data, government information dissemination, simulation experiment, differenceindifference