Conduct attribute reduction and value reduction .
将决策表进行属性约简，值约简。
参考来源 - 基于粗糙集和支持向量机的多值分类算法·2,447,543篇论文数据，部分数据来源于NoteExpress
将决策表进行属性约简，值约简。
并提出改进的值约简算法，时间复杂度在原有基础上大大减少。
And putting forwarded the improved algorithm of value attribute reduction that decreases the complexity of time greatly.
改进了一种粗糙集决策表的值约简算法，并将其应用到文本分类规则的提取中。
A reduction algorithm based on rough set is improved and then applicated to extract the rules of text categorization.
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