Concept lattice is a concept hierarchical structure

which is established according to binary relationship between data objects and attributes.It vividly and simply reflects the generalization and specialization relationship between concepts.This feature of concept lattice is used for attribute reduction of fault diagnosis.The reduction results are transmitted to neural network to diagnose the faults.The diagnosis results show that the existing fault types can be identified correctly using the core attributes and relatively necessary attributes and reduce the dimension of fault diagnosis parameters

which accelerates the algorithm’s operating speed.