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Interval decomposition of function S-rough sets

PEI Hai-feng and XU Xiao-jing   

  1. School of Math. and System Sci., Shandong Univ., Jinan 250100, Shandong, China
  • Received:2005-05-18 Revised:2005-08-23 Online:2006-10-24 Published:2006-10-24
  • Contact: PEI Hai-feng

Abstract: Interval equivalence classes and interval function S-rough sets are defined based on interval attribute of function S-rough sets, and the finite covering theorem of closed interval equivalence classes and that of closed interval function S-rough sets are put forward. The relation of function S-rough sets and S-rough sets is also theoretically proved.

Key words: finite covering theorem , closed(open)function S-rough sets, closed(open)interval equivalence classes, function S-rough sets

CLC Number: 

  • O159
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