@INPROCEEDINGS { Rsds2685,
author = {Suraj, Zbigniew and Rzasa, Wojciech}, 
title = {A New Method for Determining of Extensions and Restrictions of Information Systems}, 
booktitle = {Rough Sets and Current Trends in Computing}, 
conference = {Rough Sets and Current Trends in Computing}, 
series =  = {Lecture Notes in Arificial Intelligence}, 
volume = 2475, 
pages = {197--204}, 
publisher = {Springer-Verlag}, 
address = {Heidelberg - Berlin, Germany}, 
month = {October}, 
year = 2002, 
editor = {Alpigini, James J. and Peters, James F. and Skowron, Andrzej and Zhong, Ning Liu Jiming}, 
issn = {0302-9743}, 
isbn = {3-540-44274-X}, 
abstract = {The aim of the paper is presentation of some results that concern consistent extensions and consistent restrictions of information systems and decision systems. It is possible to determine them on the base of knowledge contained in rules generated from a given information (decision) system. The paper presents a way of consistent extensions and consistent restrictions determining, different from the one mentioned above. The paper contains also the definitions of notions of strict consistent extension (restriction) system and a necessary and sufficient condition for the existence of them for information (decision) system.}, 
keywords = {rough sets, concurrent models, knowledge discovery, data mining, real-time systems, }, 
}