ZHAO Siyu1, QIAN Ting2, WEI Ling3*
(1 College of Mathematics and Information Science, Xianyang Normal University, Xianyang 712000, Shaanxi, China;2 College of Science, Xi′an Shiyou University, Xi′an 710065, Shaanxi, China;3 School of Mathematics, Northwest University, Xi′an 710127, Shaanxi, China)
Abstract:
On the basis of a decision table, MGpositive region, MGnegative region, MGboundary region are defined from the perspective of threeway decisions, and compares them with positive region, negative region, boundary region of Pawlak rough set respectively. Then, three attribute reductions, which can preserve the MGpositive region, MGnegative region and MGboundary region respectively are defined, and the properties of the attribute reductions have also been studied.
KeyWords:
MGRS; MGpositive region; MGnegative region; MGboundary region