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The authors introduce dynamic reducts in object oriented information system using rough set theory. To develop dynamic reducts in object oriented information system using rough set theory, they propose object-oriented information system into rough set models. To accomplish this, they construct the class, object, and name structures using rough set theory. Next, combining class, name and object structures, they propose object-oriented information systems. Moreover, they introduce indiscernibility relations on the set of objects, lower and upper approximations, and object-oriented rough sets in the object-oriented information systems and they introduce the concept of object oriented reducts, object oriented reducts using indiscenibility matrix.
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