计算机科学 ›› 2018, Vol. 45 ›› Issue (1): 267-272.doi: 10.11896/j.issn.1002-137X.2018.01.047
董雷刚,刘国华,崔晓微
DONG Lei-gang, LIU Guo-hua and CUI Xiao-wei
摘要： c-skyline技术能针对数据集获得以组为单位的查询结果,非常适用于多标准决策。现有算法采用迭代方式求解,不仅运算过程冗余,而且对无效数据的过滤效果不理想。基于此,设计了一种PPQ(Partition-Prune-Query)算法,首次提出了支配区的概念,并在此基础上对整个数据集区域进行划分;然后根据高效的剪枝策略过滤大部分“无用”的组合,快速获得查询结果。通过实验验证了所提算法的正确性和高效性。
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