Abstract
This paper presents a user-oriented view of RoSy, a Rough Knowledge Base System. The system tackles two problems not fully answered by previous research: the ability to define rough sets in terms of other rough sets and incorporation of domain or expert knowledge. We describe two main components of RoSy: knowledge base creation and query answering. The former allows the user to create a knowledge base of rough concepts and checks that the definitions do not cause what we will call a model failure. The latter gives the user a possibility to query rough concepts defined in the knowledge base. The features of RoSy described using examples. The system is currently available on a web site for online interactions.

URL:
http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2005-145

BibTeX:

@inproceedings{REWERSE-RP-2005-145,
	author = {Robin Andersson and Aida Vitória and Jan Ma\luszyński and Henryk Jan Komorowski},
	title = {RoSy: A Rough Knowledge Base System},
	booktitle = {Proceedings of Tenth International Conference on Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing, Regina, Canada (31st August--3rd September 2005)},
	year = {2005},
	volume = {3642},
	series = {LNCS},
	pages = {48--58},
	url = {http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2005-145}
}