Advertisement

Toward Rough Knowledge Bases with Quantitative Measures

  • Aida Vitória
  • Carlos Viegas Damásio
  • Jan Małuszyński
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3066)

Abstract

We present a language for defining new rough relations from given decision tables and we show how to query relations defined in this way. The language provides a uniform formalism for expressing rough data together with background knowledge, and for capturing well-known techniques such as the variable precision rough set model. Its essential feature is the use of quantitative measures, such as support, strength and accuracy.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Pawlak, Z.: Rough sets. International Journal of Information and Computer Science 11, 341–356 (1982)zbMATHCrossRefMathSciNetGoogle Scholar
  2. 2.
    Vitória, A., Damásio, C.V., Małuszyński, J.: Query answering for rough knowledge bases. In: Wang, G., Liu, Q., Yao, Y., Skowron, A. (eds.) RSFDGrC 2003. LNCS (LNAI), vol. 2639, pp. 197–204. Springer, Heidelberg (2003)CrossRefGoogle Scholar
  3. 3.
    Vitória, A., Damásio, C.V., Małuszyński, J.: From rough sets to rough knowledge bases. Fundamenta Informaticae 57, 215–246 (2003)zbMATHMathSciNetGoogle Scholar
  4. 4.
    Doherty, P., Lukaszewicz, W., Szalas, A.: CAKE: A Computer Aided Knowledge Engineering Technique. In: Proc. of the 15th European Conference on Artificial Intelligence (ECAI 2002), pp. 220–224. IOS Press, Amsterdam (2002)Google Scholar
  5. 5.
    Ziarko, W.: Variable precision rough set model. Journal of Computer and Systems Science 46, 39–59 (1993)zbMATHCrossRefMathSciNetGoogle Scholar
  6. 6.
    Komorowski, J., Øhrn, A.: Modelling prognostic power of cardiac tests using rough sets. Journal of Artificial Intelligence in Medicine 15, 167–191 (1999)CrossRefGoogle Scholar
  7. 7.
    Øhrn, A., Komorowski, J.: ROSETTA: A rough set toolkit for analysis of data. In: Proc. of Fifth International Workshop on Rough Sets and Soft Computing (RSSC 1997), vol. 3, pp. 403–407 (1997)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Aida Vitória
    • 1
  • Carlos Viegas Damásio
    • 2
  • Jan Małuszyński
    • 3
  1. 1.Dept. of Science and TechnologyLinköping UniversityNorrköpingSweden
  2. 2.Centro de Inteligência Artificial (CENTRIA), Dept. Informática, Faculdade de Ciências e TecnologiaUniversidade Nova de LisboaCaparicaPortugal
  3. 3.Dept. of Computer and Information ScienceLinköping UniversityLinköpingSweden

Personalised recommendations