求翻译：决策粗糙集模型是Yao等 提出的一种概率型粗糙集模型该模型中，Yao引入了贝叶斯风险的相关理论，从三支决策的角度解释了粗糙集中的规则提取问题。根据把对应的对象划分到相应的正域，边界域，负域三个区域的不同，分别作出接受该对象属于本类，保留对该对象做决策，拒绝接受该对象属于本类的三支决策。并通过损失函数来确定决策粗糙集模型所需的阈值参数。。是什么意思？

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Decision-making such as Yao rough group model is a probabilistic model of coarse Yao group model, the model was introduced in Addis Ababa, risk-related theories of decision-making, from 3 support the interpreted the rules focus on crude extract. In accordance with the corresponding objects are divid

The policy-making rough collection model is Yao and so on in one kind of probability rough collection model this model which proposed, Yao has introduced the Baye risk correlation theories, explained the rough centralism rule extraction question from three policy-making angles.According to divides t

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