Risk assessment method and device for shared account, equipment and storage medium

The invention discloses a shared account risk assessment method and device, equipment and a storage medium, and belongs to the technical field of big data. The method comprises the steps of obtaining a preset risk management and control index set, performing sample division on a data sample set by utilizing the risk management and control index set, calculating information entropy of a sample subset based on a decision tree algorithm, calculating information gain of the sample subset based on the information entropy, and determining tree nodes in the sample subset based on the information gain. And constructing a decision tree based on the tree nodes, and evaluating the target user data through the decision tree to obtain a shared account risk evaluation result. In addition, the invention also relates to a block chain technology, and the target user data can be stored in a block chain. According to the method, the decision tree for risk assessment is constructed through the decision tree algorithm, shared acc