Estimating Cardinalities with Deep Sketches

Estimating Cardinalities with Deep Sketches
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用深度草图估计基数

DOI:
10.1145/3299869.3320218
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发表时间:
2019
期刊:
Proceedings of the 2019 International Conference on Management of Data
影响因子:
--
通讯作者:
A. Kemper
A. Kemper
中科院分区:
--
文献类型:
--
作者:
Andreas Kipf;Dimitri Vorona;Jonas Müller;Thomas Kipf;Bernhard Radke;Viktor Leis;P. Boncz;Thomas Neumann;A. Kemper

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我们介绍了深度草图,它是数据库的紧凑模型,允许我们估计SQL查询的结果大小。深度草图由一种新的深度学习方法提供支持,以估计基数,该方法可以捕获列之间的关联,甚至跨表。我们的演示允许用户在TPC-H和IMDb数据集上定义这样的草图,监控训练过程,并对训练的草图运行特殊查询。我们还使用Hyper和PostgreSQL来估计查询基数,以可视化地显示与传统基数估计器相比的收益。
We introduce Deep Sketches, which are compact models of databases that allow us to estimate the result sizes of SQL queries. Deep Sketches are powered by a new deep learning approach to cardinality estimation that can capture correlations between columns, even across tables. Our demonstration allows users to define such sketches on the TPC-H and IMDb datasets, monitor the training process, and run ad-hoc queries against trained sketches. We also estimate query cardinalities with HyPer and PostgreSQL to visualize the gains over traditional cardinality estimators.
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: --
作者:
A. Kemper;T. Neumann
通讯作者: T. Neumann