摘要： 决策粗糙集模型中损失函数一般是基于单值的。考虑到实际决策问题中损失函数的不确定特征,为了处理一般的情形,引入模糊数来表示损失函数。从模糊数学的角度出发,通过一系列模糊运算得出决策阈值α、β的模糊分布,并据此给出决策规则。同时,对比区间决策粗糙集模型,给出获得更紧凑的阈值α、β上、下确界的方法。最后,通过一个石油投资的例子来阐明该模型的应用过程。
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