Attribute Reduction of Set-valued Information System Based on Tolerance Relation
Keyun Qin · Mohu xitong yu shuxue · 2009
A new tolerance relation is defined in set-valued information system by similarity grade of attribute' set-valued,based on the tolerance relation the problem of attribute reduction and the judgment in set-valued information system are studied,from which a new approach to attribute reductions can be provided in set-valued information system,and the influence of similarity level on attribute reduction are discussed.