Computer Science ›› 2016, Vol. 43 ›› Issue (6): 283-288.doi: 10.11896/j.issn.1002-137X.2016.06.056

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Model of Three-way Decision Theory Based on Intuitionistic Fuzzy Sets

XUE Zhan-ao, ZHU Tai-long, XUE Tian-yu, LIU Jie and WANG Nan   

  • Online:2018-12-01 Published:2018-12-01

Abstract: Three-way decision theory is an important theoretical underpinning in dealing with uncertain decision pro-blems.In recent years,the study of three-way decision theory has been one of the research hotspots for scholars both at home and abroad.The model of three-way decision theory was studied based on decision theoretic rough sets and intui-tionistic fuzzy set theory.The 2-state model and 3-state model were constructed based on intuitionistic fuzzy set theory,and they were extended to the general model.The threshold value was reset with the hesitancy and the event objects were assessed through the membership functions.Finally,the validity of the method is demonstrated by a case study of organochlorine insecticides contamination in sediments and the physicochemical characteristics of sediments of Huaihe River.

Key words: Three-way decision,Intuitionistic fuzzy set,Decision,Membership,Hesitancy

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