Rough sets ranking methodology for interval numbers
Zou Kai-qi · Dalian Ligong Daxue xuebao · 2008
In fuzzy multiple attribute decision-making,the given attribute value was interval number,and according to the ranking problem of interval number,rough sets and fuzzy sets theories were applied to gain the methods of ranking: the upper approximations with the interval number;the lower approximations with the interval number;compromising ranking method of the upper(lower) approximations with the interval number.Besides,the rough sets of the interval number,the ranking method of the interval number based on rough sets,and its good properties were presented.The superiority to the classic method of the capable degree in the interval number was demonstrated.Finally,this method is adopted and verified by a specific example so that ranking interval number based on rough sets can be understood well.