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arXiv 2101.02174cs.DB
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近似序相关性的有效发现

Efficient Discovery of Approximate Order Dependencies

Reza Karegar, Parke Godfrey, Lukasz Golab, Mehdi Kargar, Divesh Srivastava, Jaroslaw Szlichta

摘要:

顺序依赖(OD)捕获属性的有序域之间的关系。近似OD(AODs)捕捉这种关系,即使在数据中存在异常。在OD的自动发现过程中,验证是验证OD是否成立的过程。我们提出了一个算法来验证近似OD显着提高运行时性能比现有的方法AOD,并证明它是正确的,具有最佳的运行时间。通过替换验证步骤的近似OD发现与我们的领先算法,我们实现了数量级的性能改善。

英文摘要:

Order dependencies (ODs) capture relationships between ordered domains of attributes. Approximate ODs (AODs) capture such relationships even when there exist exceptions in the data. During automated discovery of ODs, validation is the process of verifying whether an OD holds. We present an algorithm for validating approximate ODs with significantly improved runtime performance over existing methods for AODs, and prove that it is correct and has optimal runtime. By replacing the validation step in a leading algorithm for approximate OD discovery with ours, we achieve orders-of-magnitude improvements in performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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