Condition for covering-based upper approximation operators to be closure operators of matroids.
Lirun SuWilliam ZhuPublished in: Int. J. Granul. Comput. Rough Sets Intell. Syst. (2013)
Keyphrases
- approximation operators
- closure operator
- rough set approximations
- rough sets
- set theoretic
- formal concept analysis
- fuzzy rough sets
- attribute reduction
- sufficient conditions
- closed sets
- rough fuzzy
- approximation spaces
- rough set theory
- fixed point
- image recovery
- data analysis
- probability measure
- rough approximations
- first order logic
- decision rules
- granular computing
- databases
- mining algorithm
- control system
- knowledge base
- data mining