But it is a NP-Hard problem to get the minimal attribute reduction.

但求取任意问题的最小属性集是一个NP难问题。

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Then, according to the features of the generalized information table, the algorithms of acquiring minimal attribute reduction, attribute value reduction and minimum decision algorithm are put forward.

首先介绍了决策表、广义信息表的构造及特点，然后给出了求决策表的最小属性约简及最小决策算法的计算方法。

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Through improving and extending the process of computing core, the minimal reduction algorithm based on attribute frequency heuristic information are put forward.

对分辨矩阵求核过程进行改进与扩展，给出了一种以属性频度作为启发式信息计算最小约简快速完备方法。

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