@INPROCEEDINGS { Rsds4480,
author = {Banerjee, Mohua and Khan, Md. Aquil}, 
title = {Multiple-Source Approximation Systems: Membership Functions and Indiscernibility}, 
booktitle = {Proceedings of the Third International Conference on Rough Sets and Knowledge Technology (RSKT'2008)}, 
conference = {Rough Sets and Knowledge Technology}, 
series =  = {Lecture Notes in Artificial Intelligence}, 
volume = 5009, 
pages = {80--87}, 
publisher = {Springer-Verlag}, 
address = {Heidelberg - Berlin, Germany}, 
month = {May}, 
year = 2008, 
editor = {Wang, Guoying and Li, Tianrui and Grzymala-Busse, Jerzy W. and Miao, Duoqian and Skowron, Andrzej and Yao, Yiyu}, 
issn = {03029743}, 
isbn = {978-3-540-69069-6}, 
abstract = {The work presents an investigation of multiple-source approximation systems, which are collections of Pawlak approximation spaces over the same domain. We particularly look at notions of definability of sets in such a collection Âµ. Some possibilities for membership functions in Âµ are explored. Finally, a relation that reflects the degree to which objects are (in)discernible in Âµ is also presented.}, 
keywords = {approximation spaces, rough sets, rough membership functions, }, 
}