### Some articles on *upper approximation, approximation, upper*:

Rough Set - Definitions - Definition of A

... The -

*rough Set*-**Upper Approximation**and Negative Region... The -

**upper approximation**is the union of all equivalence classes in which have non-empty intersection with the target set – in the example, the union of the three equivalence classes in that have non ... The**upper approximation**is the complete set of objects that in that cannot be positively (i.e ... In other words, the**upper approximation**is the complete set of objects that are possibly members of the target set ...Dominance-based Rough Set Approach - Main Concepts - Rough Approximations

... key idea of the rough set philosophy is

... key idea of the rough set philosophy is

**approximation**of one knowledge by another knowledge ... of decision classes and the "granules of knowledge" used for**approximation**are P-dominating and P-dominated sets ... The P-lower and the P-**upper approximation**of with respect to, denoted as and, respectively, are defined as Analogously, the P-lower and the P-**upper**...### Famous quotes containing the word upper:

“The stately Homes of England,

How beautiful they stand,

To prove the *upper* classes

Have still the *upper* hand.”

—Noël Coward (1899–1973)

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