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Research on data analysis of internet consumer finance and consumer behavior based on VAR model

With the rapid development of digital information technologies such as big data, cloud computing and artificial intelligence, quantum information technology and digital economy are profoundly changing our way of production and life. New forms of digital economy, such as industrial Internet, intelligent Internet of things and online shopping, have become new driving forces for high-quality economic development. As a branch of digital economy, Internet consumer finance is in the trend of continuous development. This paper mainly studies the influence of Internet consumer finance on residents' consumption through VAR model. VAR model constructs the model by combining every endogenous variable in the system with its hysteresis value and exogenous variable, which has a good prediction effect on interrelated time series variables. In addition, the dynamic impact of different types of random error terms on system variables can also be analyzed. Therefore, VAR model is used in this paper to explore the benign interaction between the development of Internet consumer finance and consumer consumption. Through a series of empirical tests and analyses such as ADF test, VAR parameter estimation and impulse response function, the linear relationship between Internet consumer finance and consumption level is quantified and the future development is predicted. A series of countermeasures and suggestions are put forward for reference by relevant researchers.