Research On Innovation Ability Of Yangtze River Delta Urban Agglomeration Based On Complex Network

As China's urbanization construction is in full swing,the construction of urban agglomerations has gradually received the attention of the state.The Yangtze River Delta urban agglomeration is the fastest growing city in China with the highest population concentration and the strongest scientific and technological strength.It occupies an important position.Therefore,the improvement of the innovation capability of the Yangtze River Delta urban agglomeration has a prominent role in promoting the improvement of China's independent innovation strength.Firstly,based on the concept and research methods of complex networks,this paper constructs a complex network of innovation capabilities of the Yangtze River Delta urban agglomeration,and conducts in-depth research on the individuality and overall structural characteristics of the network.Secondly,this paper studies the block model distribution of the complex network of urban agglomeration innovation ability,and uses the method of cohesion subgroup to obtain the block model distribution with uneven distribution within the urban agglomeration.Finally,the autocorrelation of the innovation network space of urban agglomeration is tested by global and local autocorrelation.Finally,the influencing factors of the influence of complex network influencing the innovation ability of urban agglomeration are analyzed and tested by geographically weighted regression model(GWR model).Through empirical analysis,the following conclusions are drawn:(1)Shanghai,Hangzhou,Nanjing,Suzhou,Wuxi,Ningbo and other cities are at the forefront of urban agglomeration innovation,and most cities in Anhui Province are still relatively backward in the urban cluster innovation capacity network.(2)The integration of the Yangtze River Delta urban agglomeration in terms of innovation capability is still not perfect,and the polarization of internal node cities is more prominent.The economic strength and innovation capability of Anhui Province have a certain gap with Jiangsu,Zhejiang and Shanghai.(3)The spatial aggregation characteristics of the complex network of the Yangtze River Delta urban agglomeration are obvious.The internal cities of the block model have little change during the observation period.Most cities in Anhui Province are still at a low level of block model distribution.(4)Urban innovation capability and network influence have obvious spatial positive correlations.The phenomenon of urban innovation ability and network influence is different in the east-west direction.Non-uniform urban distribution causes uneven distribution of innovation elements.(5)R&D activities personnel,R&D expenditure internal expenses,enterprises with R&D activities,per capita GDP,patent application authorization,Internet broadband access users,public library industry's innovation ability and urban network influence There are significant regional differences in the impact.According to the research results,this paper puts forward the following suggestions:(1)comprehensively understand the complex network of innovation capability of the Yangtze River Delta urban agglomeration and optimize the innovation development mode according to its development characteristics;(2)improve the role of the node city in the network and strengthen the integration construction;(3)According to the non-uniform spatial block characteristics of the urban innovation complex network at present,realize differentiated development;(4)Strengthen the infrastructure construction of the urban innovation system.