LI Yingcheng, SUN Kang, MA Haitao
Research on urban innovation network is an interdisciplinary field that encompasses studies on both urban network and innovation network. In recent years,there has been a growing focus on Chinese urban innovation network,which has been featured by the following characteristics: 1) Chinese urban innovation network has the basic characteristics of multiple geographical scales and types. Studies have been mainly conducted at the provincial, regional, and national levels, in addition to some multi-scalar studies. The types of intercity innovation linkages mainly include technological collaboration,technology transfer,talent mobility,headquarters branches,innovation gravity,and a combination of multiple indicators. 2) The organizational structure of Chinese urban innovation network has been extensively explored in terms of topological and spatial structures. The topology exhibits a typical core-periphery structure that transitions from a single-core structure to a multi-core structure. The spatial structure mainly presents a diamond-shaped pattern with the Beijing-Tianjin-Hebei urban agglomeration,the Yangtze River Delta urban agglomeration, the Guangdong-Hong Kong-Macao Greater Bay Area, and the Chengdu-Chongqing urban agglomeration as vertices. However, there are still certain differences in the organizational structure characteristics of innovation networks among different types. 3) It mainly analyzes the formation mechanisms of Chinese urban innovation network from the perspectives of multidimensional proximity, network position, and socioeconomic attributes. However, the role of innovation entities at the micro level has received relatively little attention. 4) Although external effects play a crucial role in the generation of value within the Chinese urban innovation network, research in this area is still at early stages. Overall, research on Chinese urban innovation network has been faced with the following issues: an overemphasis on empirical studies to the neglect of theoretical development, an overemphasis on single-case studies to the neglect of comparative researches, an overemphasis on macro-level analysis to the neglect of micro-level analysis, an overemphasis on structural aspects to the neglect of network effects, an overemphasis on foundational research to the neglect of practical applications. These issues have hindered the sustainable development of research on Chinese urban innovation network and, more broadly,urban network studies. In the context of rapid global technological progress and the comprehensive implementation of national innovation-driven development strategies, there remains much ground to cover in researching the Chinese urban innovation network. In addressing the existing issues of "emphasizing five aspects while neglecting the other five perspectives", this paper provides an outlook for future research on Chinese urban innovation network in terms of basic theory, dimension comparison and coupling,micro-level mechanisms, external effects and performance assessment, and practical applications.