Abstract With the recent Covid-19 outbreak, group emergency decision-making (GEDM), as a new management model to pursue both social stability and decrease the negative impact of emergencies, has become highly popular. Evaluating and choosing the best emergency response is the core of the GEDM and selecting the choices can be regarded as a multi-attribute group decision-making (MAGDM) problem. Due to the increasing complexity and fuzziness of emergency decision-making environment, decision-makers (DMs) often cannot express completely rational preference information in many real EDM situations. At the same time, the existing methods seldom consider the DM’s psychological mindset at the point of decision making. In this paper, an extended TODIM (an acronym for interactive and multi-criteria decision-making in Portugese) method based on bidirectional projection is proposed to solve the GEDM problem in the context of hesitant triangular fuzzy sets (HTFSs) and the novel method is applied to a case study and compared with other existing methods. The validity and applicability of the proposed method are discussed.

中文翻译：

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基于犹豫三角模糊集双向投影的群体应急决策扩展TODIM方法

摘要 随着近期Covid-19疫情的爆发，群体应急决策（GEDM）作为一种既追求社会稳定又减少突发事件负面影响的新型管理模式受到高度关注。评估和选择最佳应急响应是 GEDM 的核心，选择选项可视为多属性群体决策 (MAGDM) 问题。由于应急决策环境越来越复杂和模糊，决策者（DMs）在许多真实的EDM情况下往往不能表达完全理性的偏好信息。同时，现有方法在决策时很少考虑DM的心理心态。在本文中，提出了一种基于双向投影的扩展TODIM（葡萄牙语中交互式多准则决策的首字母缩写）方法来解决犹豫三角模糊集（HTFSs）背景下的GEDM问题，并将该新方法应用到一个案例中研究并与其他现有方法进行比较。讨论了该方法的有效性和适用性。