Reasoning of multi-failure based on concept lattice under incomplete information condition

To analyze the multi-failure under incomplete information condition, the model based on concept lattice is constructed according to the binary relation between failure modes and basic function elements. Aiming at solving the problem caused by the incomplete information, the algorithm based on maximal confidence, function elements value expectation is designed, develop the extended discernibility matrix of the incomplete information reasoning formal context, based on which, completer the information system, using intension cardinality ascending order traversal algorithm, construct the reasoning concept lattice, the reasoning of the basic function elements is obtained. Taking weapon launching system as an example, the approach is validated, conclusion is given that the approach is better than the existing representative approach in deal with incomplete information and intuitionism of failure mode knowledge display.