南京大学学报(自然科学版) ›› 2013, Vol. 49 ›› Issue (5): 561566.
苏礼润,林姿琼,祝峰
S Li-Run, Lin Zi-Qiong, Zhu William
摘要: 拟阵是一种图和矩阵的同时推广的概念,而覆盖粗糙集是经典粗糙集的推广。广义粗糙集与拟阵的结合已被广泛研究。通过结合拟阵中的基公理和覆盖中的友元,一方面,用友元构造出一个集族并且证明其满足拟阵的独立集公理,从而建立了一种覆盖的拟阵结构且介绍了一种拟阵即友元拟阵另一方面,在此结构下,讨论了拟阵的相关集极小圈秩函数闭包等表达形式,进一步还讨论了由不同覆盖能导出相同覆盖的条件以及由覆盖导出拟阵的闭包和覆盖上近似的关系。
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