求翻译：针对在决策粗糙集模型下风险最小化的属性约简只是考虑删除属性后整个决策表的风险是否减少，并没有考虑属性重要性小的属性的约简问题，这样约简出来的结果会存在一定程度上的冗余。本文首先定义了决策粗糙集模型下的属性重要性公式。其次实现了文献中jia提出的风险最小化属性约简模型。最后和本文提出的综合考虑了属性重要性这个因素的算法进行了比较，实验证明本文中的算法最终约简的结果更优。是什么意思？

Rough set model for decision making under risk minimization of attribute reduction is to consider deleting the whole decision table after attribute whether the risk reduction did not take into account the importance of small properties attribute reduction problem, so the result of the reduction ther

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In view of after the policy-making rough collection model the risk minimum attribute reduction only is considered deletion attribute entire policy-making table risk whether reduces, had not considered the attribute important small attribute reduction question, such reduction comes out the result can

For minimal risk based on rough set in decision-making model only after you remove the attribute for attribute reduction of decision tables as a whole reduced the risk of, without taking into consideration the importance attribute property reduction small problems so that reduction results from a ce