After that we study on the ordered decision table and propose a new heuristic attribute reduction algorithm based on dominance matrix, whose time complexity is polynomial.

再次，对有序决策表进行了研究，提出了一种基于优势矩阵的启发式属性约简算法。

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This paper proposes the concept of the decision table of the attributes reduction, and gives the method of the reducing attributes based on discernibly vector.

文章提出了决策表的区分向量的概念，并给出了利用区分向量进行属性约简的方法。

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With regard to the attribute values in decision table, which are described with hybrid data, a new algorithm of attribute reduction based on rough set theory is proposed.

针对决策表中属性取值为杂合数据的情况，提出了基于粗糙集理论的属性约简算法。

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