Roughness bounds in rough set operations

Date
2006-11-01
Authors
Yang, Yingjie
John, Robert, 1955-
Journal Title
Journal ISSN
ISSN
0020-0255
Volume Title
Publisher
Elsevier
Peer reviewed
Abstract
Description
The propagation and combination of uncertainties can significantly influence the performance of an information system. Although there have been great efforts in the propagation of randomness, fuzziness and other uncertainties, there is not yet a thorough study for the propagation of roughness in rough set operations. The derivation of a roughness bound for various rough set operations is given. We proved that there is no defined bound for the intersection operation of any two rough sets but there are bounds for union, complement and most difference operations. This is beneficial for decision making involving large volumes of rough set operations.
Keywords
RAE 2008, UoA 23 Computer Science and Informatics, rough sets, roughness
Citation
Yang, Y. and John, R.I. (2006) Roughness bounds in rough set operations. Information Sciences, 176(21), pp. 3256-3267.
Research Institute
Institute of Artificial Intelligence (IAI)