A knowledge-based modeling support system is issued in this paper．Its knowledge consists of three parts：modeling rule knowledge，variable type knowl edge and data mapping knowledge．The modeling rule knowledge represents the deci sion-maker's modeling process．The variable type knowledge defines data types f o r all variables in the modling rule knowledge．The data mapping knowledge defin es sources of the data required during solving．After the decision-maker input s a problem，the modeling support system will solve it according to the modeling knowledge automatically and at last commit the result to the decision-maker． M eanwhile， machine learning is adopted to acquire knowledge during problem solvi ng．%提出一种基于知识的建模支持系统，该系统的知识由三部分组成：构模规则知 识、变量类型知识以及数据映射知识.构模规则知识描述了决策者的构模过程；变量类型知 识定义了构模规则知识中所有变量的数据类型；数据映射知识描述求解过程所需数据的来源 .对于决策者输入的一个实际决策问题，系统能够根据问题描述按照构模知识自动进行求解 ，同时对经验进行学习，生成经验规则.
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