In this paper the relation of the compatibilityrelation on a set between the covering of a set have been dis-cussed.
本文主要讨论集合的覆盖与集合上的相容关系之间的关系。
2
The compatibilityrelation contains equivalence, subcontrariety, subaherna- tion, implication and counter-implication.
相容关系有等值关系、下反对关系、差等关系（蕴涵关系和逆蕴涵关系）；
3
Tolerence operators are kind of operations converting general relation to compatibilityrelation, it also extends the application range of the compatibilityrelation-based methods for data mining.