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中国管理科学 ›› 2008, Vol. 20 ›› Issue (6): 95-99.

• 论文 • 上一篇    下一篇

一种基于证据距离的客观权重确定方法

陆文星, 梁昌勇, 丁勇   

  1. 合肥工业大学管理学院, 安徽合肥 230009
  • 收稿日期:2008-06-30 修回日期:2008-11-28 出版日期:2008-12-31 发布日期:2008-08-20
  • 作者简介:陆文星(1971- ),男(汉族),江苏常州人,合肥工业大学管理学院,助理研究员,研究方向:决策支持系统、项目管理.
  • 基金资助:

    国家自然科学基金项目(70631003);国家自然科学基金项目(70771037)

A Method Determining the Objective Weights of Experts Based on Evidence Distance

LU Wen-xing, LIANG Chang-yong, DING Yong   

  1. School of Management, Hefei University of Technology, Hefei 230009, China
  • Received:2008-06-30 Revised:2008-11-28 Online:2008-12-31 Published:2008-08-20

摘要: 证据理论能较好地处理具有模糊和不确定信息的合成问题,广泛应用于群决策中。但在高度冲突的证据下,合成结果会失真,为解决该问题,提出一种基于证据距离的客观权重确定方法。该方法根据各专家提供的证据间的距离来确定其客观权重,从而重新调整各专家证据的基本概率分配,可以降低与群体意见分歧较大的专家的权重。最后用一项目投资选择案例来验证该方法有效性。

关键词: 证据距离, 客观权重, 冲突证据, 群决策

Abstract: Dempster-Shafer theory of evidence is widely applied in group decision-making for its power of better handling the synthesis of fuzzy and uncertain information.But when there are high conflict bodies of evidence,the combination result is often inconsistent with the facts. To solve the problem,a method determining the objective weights of experts based on evidence distance is presented. This method determines the weights of experts' opinions according to the evidence distance to re-adjust the basic probability assignments,which can reduce the weight of the expert whose opinion is largely divergent to others'.A study about the project evaluation problem is applied to verify the effectiveness of the proposed method.

Key words: evidence distance, objective weight, conflict evidence, group decision-making

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