Credit risk infection monitoring method based on network structure
A technology of network structure and risk, applied in the field of financial technology
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[0039] The specific implementation of this patent is described one by one according to the four steps realized by the system:
[0040] System implementation is divided into four steps:
[0041] Step 1. Based on the Granger causality detection based on the EDF time series (2010-2019) provided by Hengtai Zhixin, build a financial institution relationship network.
[0042] The basic principle of Granger causality test: In the case of time series, the Granger causality between two economic variables X and Y is defined as: if the past information of variables X and Y is included, the variable X has a positive effect on the variable Y The prediction effect of Y is better than the prediction effect of Y only based on the past information of Y alone, that is, variable X helps to explain the future changes of variable Y, then variable X is considered to be the Granger cause of variable Y. In short: the error δ obtained by predicting the future value of Y from the common past values of...
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