• ON SOME PROPERTIES OF ROUGH APPROXIMATIONS

Y. MADHAVI REDDY*, Dr. P. VENKAT RAMAN, Dr. E. KESHAVA REDDY

Abstract


In 1982, Zdzislaw Pawlak [2] introduced the theory of Rough sets to deal with the problems involving imperfect knowledge.  This present research article studies some interesting properties of Rough approximations of subsets of the universe set. The properties of Rough membership function or also presented.


Keywords


Universe set, Information system, Equivalence relation, Lower Rough Approximation, Upper Rough Approximation, Rough set, Rough Membership function.

Full Text:

PDF


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 Unported License.
© 2010-2016 International Journal of Mathematical Archive (IJMA)
Copyright Agreement & Authorship Responsibility
Web Counter