Abstract
In this paper, the concept of rough set is introduced for an information system with multi-layered weighted fuzzy attributes. The equivalence classes of the objects are formed using the fuzzy weight given to the objects in terms of these multi-layered weighted fuzzy attributes. The weight of the rough set is also defined using the weight of its lower and upper approximations and also we defined an interval valued fuzzy set on the set of objects. This helps to study the behaviour of any system with complex attributes. These concepts are illustrated with a real-time example.
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