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The notion of rough set captures indiscernibility of elements in a set. But,in many real life situations, an information system establishes the relationbetween different universes. This gave the extension of rough set on singleuniversal set to rough set on two universal sets. In this paper, we introduceapproximation of classifications and measures of uncertainty basing upon roughset on two universal sets employing the knowledge due to binary relations.

Approximation of Classification and Measures of Uncertainty in Rough Set on Two Universal Sets