Sixth International Conference on Hybrid Intelligent Systems (HIS'06)
Properties of the Fourth Type of Covering-Based Rough Sets
Auckland, New Zealand
December 13-December 15
ISBN: 0-7695-2662-4
In the covering-based generalized rough set setting, lower and upper approximation operations generated by a covering do not satisfy some of common properties of classical lower and upper approximation operations. In this paper we investigate conditions for a covering under which these properties hold for the fourth type of covering-based lower and upper approximation operations.