Estimating Filtered Group-By Queries is Hard : Deep Learning to the Rescue
Estimating Filtered Group-By Queries is Hard : Deep Learning to the Rescue
复制标题
估计过滤后的分组查询很困难:深度学习来救援
DOI:
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复制
发表时间:
2019
期刊:
影响因子:
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通讯作者:
M. Freitag
中科院分区:
文献类型:
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作者:
Andreas Kipf;M. Freitag
While estimating the result size of a group-by operation on a base table is hard on its own, the presence of selections makes this problem increasingly difficult to solve. We show that skewed data distributions and correlations found in real-world data heavily affect the results of traditional cardinality estimators. On the other hand, deep learning has recently been shown to be a more robust approach to cardinality estimation. Our evaluation shows that our (setbased) deep learning model significantly enhances the quality of filtered group-by cardinality estimates.
DOI:
10.1109/icde.2011.5767867
发表时间:
2011
期刊:
2011 IEEE 27th International Conference on Data Engineering
影响因子:
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作者:
A. Kemper;T. Neumann
通讯作者:
T. Neumann