IJPAM: Volume 27, No. 1 (2006)


A.S. Salama$^1$, H.M. Abu-Donia$^2$
$^1$Department of Mathematics
Faculty of Science
Tanta University
Tanta, EGYPT
e-mail: amgadsalama2003@yahoo.com
$^2$Department of Mathematics
Faculty of Science
Zagazig University
Zagazig, EGYPT
e-mail: donia_1000@yahoo.com

Abstract.In this paper, we studied some topological properties of information systems and we introduced three new approaches for data reduction. Topological approach for data reduction is a new method to deal with general types of relations. The reducts of an information systems has here some orders (first order, second order, and so on) and also the core. The second approach depends on the comparing the values of each subset of the set of condition attributes with the decision attribute. The evaluation of reduct and the core by the second approach is a quick and efficiently method for data reduction than the classical methods. The last approach depends on the notion of topological covering.

Received: December 24, 2005

AMS Subject Classification: 93C57

Key Words and Phrases: information systems, topological spaces, and data reduction

Source: International Journal of Pure and Applied Mathematics
ISSN: 1311-8080
Year: 2006
Volume: 27
Issue: 1