The RSDS system (ang. Rough Set Database System) is a bibliographical database concerning the rough sets and their applications. The database contains about 4000 descriptions of publications in the BibTeX format. The RSDS system is available for free at http://rsds.univ.rzeszow.pl.

The research conducted with the use of this system is based on compiling methodology and mechanisms which allow to "understand" the meaning of possessed information, i.e. bibliographical descriptions of publications, and on the basis of this information to aggrandize and improve the abilities of the system (searching, adding information etc.). The proposed process has been based mainly on ontology used for describing the relations between the concepts appearing in a considered field and bibliographical descriptions of publications. The proposed methodology of the problem described looks as follows:

• Formulating and creating the ontology of a field i.e. the rough sets.
• Formulating and creating the mechanism allowing to generate a "mini" ontology out of possessed information (bibliographical descriptions).
• Comparing the "mini" ontology and the ontology of a field as this will allow to define what a given publication describes, on the basis of understanding the description of a publication.

At present, while conducting the research we have created the ontology of a field and we have also worked on the mechanism of generating "mini" ontologies out of the bibliographical description of a given publication. The next step will be experimental verification of the mechanism of generating "mini" ontologies, which allows for improvement of created mechanism.

References

1. Pawlak, Z.: Rough Sets - Theoretical Aspects of Reasoning About Data, Kluwer Academic Publishers, Dordrecht 1991.
2. Guarino, N.: Formal Ontology in Information Systems, IOS Press, Amsterdam, 1998.
3. Suraj, Z., Grochowalski, P.: The Rough Set Database System, Transactions on

         Rough Sets VIII, Springer-Verlag, Berlin 2008, 307-331.

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