Abstract:

A new method for discretization of continuous attributes
is put forward to overcome the limitation of the traditional rough
sets,which cannot deal with continuous attributes.The method is
based on an improved algorithm to produce candidate cut points
and an algorithm of reduction based on variable precision rough
information entropy.With the guarantee of consistency of decision
system,the method can reduce the number of cut points and im-
prove efficiency of reduction.Adopting variable precision rough
information entropy as measure criterion,it has a good tolerance
to noise.Experiments show that the algorithm yields satisfying
reduction results.