Application Of Infectious Disease Model Based On Complex Network In Equity Market Capital Flow

The infectious disease model uses the classical model of propagation dynamics to describe the infection process of the disease qualitatively and quantitatively according to the social development characteristics of the population and the spreading rules of the disease,and simulates the spreading rules,effectively helping researchers analyze and predict the future trend of spreading Government agencies provide the best data support with the best isolation,treatment,and control.At the end of 2019,the 27 first batch of patients diagnosed with new type of coronary pneumonia who had a history of exposure to the seafood market in South China kicked off the spread of the virus.As a barometer in social production,the stock market reflects people’s expectations for current and future development.Investors’panic about viruses is directly transmitted at the fund level.At present,in the field of finance research,investor behavior research has become a new thinking on the rational assumption of people in traditional investment theory.From the perspective of human reality,in order to explain market behavior and fully consider the role of investors,so far Empirical research on investor behavior mainly starts with investor sentiment analysis and investor psychological analysis,and investor behavior.Investors in the stock market investment process,because they can not get complete information,so when they know the plans of other investors,often change their decisions and follow others’ decisions.This transmission process is very similar to the spread of infectious diseases.The predecessors applied the SIR infectious disease model to A-share capital flows to study investor behavior.This article inherits this idea,considering that the outbreaks and inflection points of different provinces,cities and countries are different during the spread of the epidemic,and the infectious disease model is expanded to be used in subdivided industries to better characterize the capital flows of various industries.The innovation of this paper is to compare the behavioral contagion of investors in the Chinese stock market with blind herds and herd effects and the spreading rules of infectious diseases,and use the infectious disease dynamics to establish inter-industry SIR based on complex networks.The capital flow relationship unifies the parameters under the same model and reduces the artificial parameter adjustment behavior.The effect of the model is better,which is consistent with the actual comparison.Combining the classic infectious disease dynamics model with investor behavior research,the industry fund SIR model is established,and the phenomenon of infectious diseases among individuals is compared with the herd behavior of investors,in order to study the behavior of investors to the stock market.Influence provides a new perspective.