Financial Supervision Innovation Based on Decision Tree Classification Algorithm in Big Data Era

Nowadays, with the development of network communication technology and digital technology, it is widely used at all levels of society. The convenience and rapidity of the Internet make finance continuously integrate into people's daily life. Internet finance, as one of the innovative forms of financial information, has developed rapidly in just a few years under the support of information technology. While seeing that Internet finance has brought great support to economic development, we can't ignore its various problems. The potential risks accumulated in the early stage of the Internet finance industry are constantly erupting, exposing various problems in financial supervision, which not only damages the rights and interests of the long-tail group, but also increases the social cost, which is not conducive to the long-term development of the Internet finance industry. This paper discusses the inheritance and innovation relationship between big data analysis and traditional financial statistics. Based on the decision tree classification algorithm, aiming at strengthening financial supervision and improving macro decision-making level, this paper puts forward the idea of making overall use of big data analysis and statistical analysis.