关键词: 区间模糊语言, 多属性群决策, 不确定的拓展的有序加权平均算子（UEOWA）, 不确定的语言混合集结算子（ULHA）

Abstract: International evaluation methods and measure models based on statistical analysis may not be applied in China directly, due to some problems existing in Chinese commercial banks, such as the lack of loss data, imperfection of information disclosure and so on. From a quantitative combining with qualitative perspective, with respect to the problem of multiple attribute group decision making during operational risk evaluation, a multi-attribute group decision making method based on interval and linguistic information is proposed, and UEOWA operator and ULHA operator are utilized. The linguistic term set is set up using interval form to express some fuzzy indices, and the procedure of evaluation is designed. An example shows the feasibility and effectiveness of this method.

Key words: interval fuzzy linguistic information, multi-attribute group decision making, Uncertain Expansion Order Weighting Average（UEOWA） operator, Uncertain Linguistic Hybrid Aggregation（ULHA） operator