System portfolio selection based on GRA method under hesitant fuzzy environment

• 作者: LI Zhuoqian DOU Yajie XIA Boyuan YANG Kewei LI Mengjun
• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: SYSTEMS ENGINEERING
• 页码范围: 120-133
• 页数: 14页
• 语种: 英文
• DOI: 10.23919/JSEE.2022.000013

摘要

The hesitant fuzzy set(HFS)is an important tool to deal with uncertain and vague information.In equipment system portfolio selection,the index attribute of the equipment system may not be expressed by precise data;it is usually described by qualitative information and expressed as multiple possible va-lues.We propose a method of equipment system portfolio selec-tion under hesitant fuzzy environment.The hesitant fuzzy ele-ment(HFE)is used to describe the index and attribute values of the equipment system.The hesitation degree of HFEs measures the uncertainty of the criterion data of the equipment system.The hesitant fuzzy grey relational analysis(GRA)method is used to evaluate the score of the equipment system,and the im-proved HFE distance measure is used to fully consider the influ-ence of hesitation degree on the grey correlation degree.Based on the score and hesitation degree of the equipment system,two portfolio selection models of the equipment system and an equipment system portfolio selection case is given to illustrate the application process and effectiveness of the method.