Efficient Detection of Soft Concatenation Mapping.

Hao Liu,Jiang Xiao,Haoyu Tan,Qiong Luo,Jintao Zhao,Lionel M. Ni

IEEE Transactions on Knowledge and Data Engineering（2018）

引用 3|浏览104

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摘要

In modern big data warehouse systems, we observe a common phenomenon that a column of data values can be derived from one or several other columns by transforming and concatenating these columns. We call this relationship between columns a Soft Concatenation Mapping (SCM). SCMs imply significant redundancy in the schema or data, and therefore can be exploited for data integration or data compressi...

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关键词

Data warehouses,Redundancy,Data integration,Data compression,Approximation algorithms,Electronic mail,Task analysis

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