关键词: 设计方案, 不确定语言, 多属性, 决策, 粗糙集

Abstract: To reduce unfavorable affects of uncertain language evaluation on design scheme decision-making, an evaluation model combining rough sets with uncertain-language multi-attribute decision-making method was proposed. The non-uniqueness of design scheme was strengthened because of the customer requirements fuzziness, it's necessary to evaluate and select within multiple schemes which satisfied same or similar demands. The language evaluation for each scheme under specific attribute or attribute set was carried out by constructing a scheme-set-oriented multi-attribute system, thus the multi-attribute evaluation matrix was gotten. To improve algorithm objectivity and effectiveness, the attribute importance computing of rough set was embedded in uncertain-language multi-attribute decision-making method, thus the scheme decision could be made based on each attribute importance. Then, Uncertain Expansion Order Weighting Average (UEOWA) operator was introduced to evaluate each design scheme, and a comparatively reasonable scheme under integrated effect of specific attribute set was obtained.

Key words: design scheme, uncertain language, multi-attribute, decision-making, rough sets