Method, device and system for determining fault distribution of switch equipment

The invention provides a method, a device and a system for determining fault distribution of switch equipment. The method comprises the following steps: firstly, acquiring an attribute vector and a fault historical vector of each switch equipment; and then based on the fault historical vector, training an implicit Dirichlet model, so that the implicit Dirichlet model outputs distribution information of each switch device to a fault mode and distribution information of each fault mode to a fault; training a decomposition machine model based on the attribute vector and the distribution information of the switch equipment to the fault mode, and determining the mapping relation of the switch equipment to the fault mode; and inputting the attribute vector of the switch equipment of which the fault distribution is to be determined into the decomposition machine model, and determining target distribution information of the switch equipment of which the fault distribution is to be determined to the fault mode; and ba