 PDF(446 KB)
						
							PDF(446 KB) 
						
						
					 
			Logical OR operation model of variable precision upper approximation operator and grade lower approximation operator
ZHANG Xian-yong
Systems Engineering - Theory & Practice ›› 2013, Vol. 33 ›› Issue (5) : 1277-1282.
 PDF(446 KB)
						
							PDF(446 KB) 
						
						
					 PDF(446 KB)
						
							PDF(446 KB) 
						
						
					Logical OR operation model of variable precision upper approximation operator and grade lower approximation operator
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