关键词: 决策与试行实验室, 多粒度评价标度, 拓展语言层级, 二元语义模型

Abstract: Decision making trial and evaluation laboratory (DEMATEL) intended to study and resolve the complicated socioeconomic system issues, has been widely applied by domestic and foreign scholars in recent years. When analyzing the causal-relationship of complex socioeconomic system, a problem in the group decision making trial evaluation laboratory method is that experts may prefer to apply multi-granular evaluation scales to express their judgments. To conquer the problem, this paper applies 2-tuple linguistic model to express the experts’ preference judgment information, and proposes an improved method based on extended hierarchical linguistic model. The improved method constructs 2-tuple direct influence matrices with multi-granular evaluation information of group experts. It unifies the multi-granular information by extended hierarchical linguistic model. Then the unified information can be aggregated with the average operator of 2-tuple linguistic. Finally the traditional group DEMATEL method is processed for system information analysis and decision-making. An empirical study on internal barriers for automotive parts remanufacturers in China is presented to illustrate the feasibility of the proposed method.

Key words: decision making trial and evaluation laboratory, multi-granular evaluation scales, extended hierarchical linguistic model, 2-tuple linguistic model