Characterizations of coverings for upper approximation operators being closure operators.
Xiaoxia BianPei WangZuoming YuXiaole BaiBin ChenPublished in: Inf. Sci. (2015)
Keyphrases
- approximation operators
- rough set approximations
- closure operator
- rough sets
- formal concept analysis
- fuzzy rough sets
- set theoretic
- attribute reduction
- closed sets
- fixed point
- rough set theory
- concept lattice
- first order logic
- rough fuzzy
- approximation spaces
- mining algorithm
- data mining
- fuzzy logic
- rule extraction
- decision rules
- boolean expressions
- binary data
- fuzzy sets
- granular computing
- rough approximations
- image recovery
- equivalence relation
- relational databases
- information systems