Based on fuzzy rough set theory, it is liable to change the incomplete system into fuzzy information system and make the covert knowledge stand out in a way of decision regularity.

应用这种方法能够将不完备系统转化为模糊信息系统，然后利用模糊粗糙集理论，让隐藏在不完备信息系统中的知识以决策规则的形式表示出来。

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Based on system fuzzy decision theory and entropy information theory, a fuzzy optimum selection model with entropy weight is developed and presented in this paper.

根据系统模糊决策理论和熵—信息理论，构建了一个系统模糊优选熵权模型，并将该模型用于节水灌溉工程项目综合评价中。

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A defuzzifying decision-making method for multiobjective system with fuzzy information is presented in this paper.

对于具有模糊信息的多目标系统提出了一种模糊多目标决策方法。

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