Entropy theory is used to calculate the index weight of factors,and credible degree recognition criteria is established according to the theory uncertainty measurement.

The weights for indexes were calculated by entropy weight theory, and the result of coal seams outburst risk prediction can be obtained according to credible degree criteria.

Based on classify criterion matrix,single-valued whitenization weight function and reliability code,grey attribute recognition clustering method is put forward.

Non-suitablility of maximum subordinated degree principle was discussed and an improved method that based on reliability code was presented.

Entropy weight fuzzy comprehensive evaluation of grid enterprise crisis management ability based on confidence criterion

Based on the evaluation index system of teachers teaching quality,this paper established an attribute synthetic assessment model according to confidence criterion and determined the weights of different indexes by the weight vector deduced from the pairing comparison matrix by the eigenvalue method.

With these concepts,the state characteristics of the system law when intruding by-law,the recognition of the state characteristics,the recognition criterion and applications are all discussed in this paper.

Based on the dual of function S-rough sets,the concept law generation of system state is put forward,the first theorem and the second theorem of recognition of system state are presented,and the recognition criteria are given;from the results above,an application of function S-rough sets inrecognition of system state is offered.