DOI QR코드

DOI QR Code

Pointless Form of Rough Sets

  • Received : 2013.11.27
  • Accepted : 2014.05.28
  • Published : 2015.09.23

Abstract

In this paper we introduce the pointfree version of rough sets. For this we consider a lattice L instead of the power set P(X) of a set X. We study the properties of lower and upper pointfree approximation, precise elements, and their relation with prime elements. Also, we study lower and upper pointfree approximation as a Galois connection, and discuss the relations between partitions and Galois connections.

Keywords

References

  1. S. Burris and H. P. Sankappanavar, A Course in Universal Algebra, Springer-Verlag, 1981.
  2. A. A. Estaji, S. Khodaii and S. Bahrami, On rough set and fuzzy sublattice, Information Sciences, 181(18)(2011), 3981-3994. https://doi.org/10.1016/j.ins.2011.04.043
  3. A. A. Estaji, M. R. Hooshmandasl and B. Davvaz, Rough set theory applied to lattice theory, Information Sciences, 200(2012), 108-122. https://doi.org/10.1016/j.ins.2012.02.060
  4. B. Ganter and R. Wille, Formal Concept Analysis, Springer-Verlag, Berlin, 1999.
  5. G. Gierz, K. H. Hofmann, K. Keimel, J. D. Lawson, M. Mislove and D. S. Scott, Continuous Lattices and Domains, Cambridge University Press, 2003.
  6. F. Hausdorff, Grundzuge der Mengenlehre, Leipzig, Veit and Co., 1914.
  7. P. T. Johnstone, Stone spaces, vol. 3 of Cambridge Studies in Advanced Mathematics, Cambridge University Press, Cambridge, (1982).
  8. P. T. Johnstone, The point of pointless topology, Bull. Amer. Math. Soc. (N.S.), 8(1)(1983), 41-53. https://doi.org/10.1090/S0273-0979-1983-15080-2
  9. Xiangping Kang, Deyu Li, Suge Wang and Kaishe Qu, Rough set model based on formal concept analysis, Information Sciences, 222(2013), 611-625. https://doi.org/10.1016/j.ins.2012.07.052
  10. Z. Pawlak, Rough sets, International Journal of Information Computer Science, 11(1982), 341-356. https://doi.org/10.1007/BF01001956
  11. Z. Pawlak and A. Skowron, Rough sets and boolean reasoning, Information Sciences, 177(2007), 41-73. https://doi.org/10.1016/j.ins.2006.06.007
  12. Shiping Wang, Qingxin Zhu, William Zhu and Fan Min, Quantitative analysis for covering-based rough sets through the upper approximation number, Information Sciences, 220(2013), 483-491. https://doi.org/10.1016/j.ins.2012.07.030
  13. Lingyun Yang and Luoshan Xu, Roughness in quantales, Information Sciences, 220(2013), 568-579. https://doi.org/10.1016/j.ins.2012.07.042

Cited by

  1. On the category of rough sets vol.21, pp.9, 2017, https://doi.org/10.1007/s00500-016-2135-9