计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (12): 173-176.
• 数据库与信息处理 • 上一篇 下一篇
周杰 王加阳 罗安
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摘要： 文章分析了变精度粗糙集模型约简异常出现的原因，结合变精度粗糙集模型特征，将特定β值上的约简扩展为区间约简，并从分类质量、相对正域和决策类三个层次分别对约简进行描述，研究了它们与约简异常之间的关系。区间约简评价因子的提出，对评价及选择区间约简有重要指导意义。
关键词: 变精度粗糙集模型, 约简异常, 区间约简
Abstract: The reason for reducts anomalies is analysed based on variable precision rough sets in this paper. The definition of reducts extends from particular β value to β interval corresponding to the characteristics of variable precision rough sets. Reducts are defined and studied from different hiberarchy, viz. the quality of classification, relative positive-region and decision classes, different hiberarchy has different anomalies. A kind of measure for interval reducts is also given in the paper, it is useful for evaluating and selecting interval reducts.
Key words: variable precision rough sets model(VPRSM), reducts anomalies, interval reducts
周杰 王加阳 罗安. 变精度粗糙集模型约简层次研究[J]. 计算机工程与应用, 2007, 43(12): 173-176.
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http://cea.ceaj.org/CN/Y2007/V43/I12/173
