J4 ›› 2009, Vol. 44 ›› Issue (11): 89-92.

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P-rough integrals and the rough degree of function two-direction S-rough sets

 YU Xiu-Qing   

  1. 1. Dezhou College, Dezhou 253000, Shandong, China;2. School of Mathematics, Shandong University, Jinan 250100, Shandong, China
  • Received:2008-12-22 Online:2009-11-16 Published:2009-11-25

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Abstract:

The concepts of the precision degree and rough degree of function two-direction S-rough sets are given, which is based on [WTHT]P[WTBZ]?rough integrals generated by function two-direction S-rough sets. And a series of their characteristics are discussed. Also, the discernible criterion of function two-direction S-rough sets and the screening-surplus theorem of it are obtained.

Key words: function twodirection Srough sets; P-rough integrals; rough degree

CLC Number: 

  • O159
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