针对决策小组权重未知、方案的偏好信息以双重犹豫语言偏好关系形式给出的群决策问题,提出了一种简单决策方法.首先,为准确、全面地描述群决策过程中的不确定评估信息,定义双重犹豫语言数,并根据定义的运算法则,提出双重犹豫语言加权平均算子.其次,定义双重犹豫语言偏好关系,并利用单个决策小组对方案偏好信息得分值的标准差和其偏好信息得分值与其他决策小组偏好信息得分值的相关系数,提出一种客观确定决策小组权重的方法,进而提出一种基于双重犹豫语言偏好关系的群决策方法.同时,通过九甸峡水库运行方案选择实例说明该方法的可行性和有效性.最后,将该方法与现有方法进行比较,结果表明,所提出的方法能够直接处理双重犹豫语言偏好信息,不需要进行信息转化,从而可以减少原始决策信息的丢失 In order to solve the problem of group decision making given the weight of the decision-making panel is unknown, the preference information of the decision-making program is given in the form of double hesitating language preference relations.Firstly, to describe the uncertainty assessment information in the group decision-making process accurately and comprehensively, The number of double hesitating language is defined and a double hesitancy language weighted average operator is proposed according to the defined algorithm.Secondly, the dual hesitancy language preference relation is defined, and the standard deviation and preference information of the program preference information score Score and other decision-making groups preference information scoring value, a method to objectively determine the weights of decision-making groups is proposed, and then a group decision-making method based on double hesitation language preference relations is proposed.At the same time, through the operation of Jiudianxia Reservoir Finally, this method is compared with the existing methods, and the results show that the proposed method can directly deal with the dual hesitation language preference information without the need of information conversion, which can reduce Loss of original decision information