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摘要: 目前粗糙集属性约简基本上是通过差别矩阵先求出属性核,然后在属性核的基础上再求出属性约简。这种计算方法具有较高的复杂度。因此提出并分析了属性的加权平均重要性的属性约简算法,该算法可以确保得到决策表的一个约简,且不需要计算核,减少计算量,提高计算速度。以实例验证了算法的正确性。