犹豫模糊语言集以语言表达为基础，能够灵活、全面地反映决策者的真实偏好，其在供应链管理、航运物流管理、电子学习、人力资源管理、工程管理、模糊控制、模式识别、医疗诊断、国家战略决策等多个方面都具有广泛的应用前景。本项目将系统深入地研究基于犹豫模糊语言信息的定性决策理论与方法，具体包括：研究犹豫模糊语言信息的融合方法，提出全新的融合算子来辅助决策；丰富和完善犹豫模糊语言信息的测度理论，并将这些测度应用于决策模型；系统地研究犹豫模糊语言的偏好关系理论，重点研究犹豫模糊偏好关系的一致性检验和非一致性修正算法、优先权生成算法、残缺犹豫模糊语言偏好关系的演化方法、以及群体共识的达成算法等；引入基于犹豫模糊语言信息的新的决策方法，如犹豫模糊语言交互式决策方法、犹豫模糊语言PROMETHEE方法、证据推理算法等；将上述研究成果应用到实际的决策问题中。预期在国际知名期刊发表学术论文12篇，并出版专著1部。

As it is based on linguistic expressions, the hesitant fuzzy linguistic term set (HFLTS) can be used to represent decision makers' preference flexibly and comprehensively. It can be applied to supply chain management, shipping logistics management, e-learning, human resource management, project management, fuzzy control, pattern recognition, medical diagnosis, the national strategic decision-making, and many other areas. The aim of this project is to build the theoretical framework of qualitative decision making theory based on hesitant fuzzy linguistic information and implement these theory and methodologies into practical decision making circumstances. The project involves the following parts: (1)study the information fusion methodologies for HFLTSs and propose a family of novel aggregation operators to aid decision making; (2)construct the measurement theory for HFLTSs, including the distance measures, the similarity measures, the correlation measures, the entropy measures, etc., and then implement these measures into decision making models; (3) propose the hesitant fuzzy linguistic preference relation (HFLPR) theory, which includes the consistency checking and inconsistency repairing algorithms, the priority derivation methods, the inducing methods for incompleted hesitant fuzzy linguistic preference relations and the group consensus reaching processes; (4) develop some decision making methods based on HFLTSs, such as the interactive decision making method, the PROMETHEE method, the evidence reasoning method, etc.; (5) implement these research results to practical decision making problems. Our results are predicted to be published in some well-known international journals (twelves international journal papers, and one book).