群体决策是为充分发挥集体的智慧，由多人共同参与决策分析并制定决策的整体过程。其中，参与决策的人组成了决策群体。
群体决策的主要目标是寻求一致或妥协，寻求极大化一致性的最优协调解以及如何测度解的一致性一直是多准则群体决策理论与方法研究的核心问题之一。
A key problem of multiple criteria group decision making (MCGDM) is to find the optimal solution on the condition of the maximum consistency and how to measure the consensus degree of the solution.
这些成果初步奠定了不完全信息群体决策这一新领域的重要理论基础和基本方法。
These results constitute the fundamental theoretical foundation and provided the basic methods in the new field of incomplete information group decision making.
将用于个人多目标决策的灰色关联理论推广到群体决策情形，引入个体理想最优效果和群体理想最优效果的概念，提出了一种多目标群体决策问题的灰色关联模型。
The concept of individual imagined optimum effect and group imagined optimum effect is presented, and a grey analytical method of multi objective group decision making problem is proposed.
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