Hierarchical classification method and device based on data blood relationship intimacy

The invention discloses a hierarchical classification method and device based on data blood relationship intimacy, and the method comprises the steps: extracting an intimacy index between data tables, and calculating an intimacy value between the data tables; defining sensitive data type features, and establishing a sensitive data type feature set; establishing a classification and grading feature set according to the sensitive data type feature set, and setting a classification interval; based on the established classification and grading feature set and the set classification interval, constructing and training a sensitive data classification and grading model in combination with a machine learning algorithm; detecting the inclusion condition of the sensitive data in each data table according to the sensitive data type feature set in combination with an intelligent algorithm; according to the inclusion condition of the sensitive data in each data table, carrying out primary classification and grading throug