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TEMPLATE: RU-DI Poster
UNOFFICIAL Template for Poster with Radboud University, Donders Institute layout
Qianchu Liu's CV
Qianchu Liu's CV. Created with the Medium Length CV template
Technische Mechanik (ISSN 2199-9244) Template
Technische Mechanik is a scientific journal for fundamentals and applications of engineering mechanics.
Established in 1980 the Technische Mechanik is a periodical which publishes scientific papers from the entire field of mechanics ; i.e. all branches of theoretical and applied mechanics including related fields of study.
The journal Technische Mechanik is an Open Access journal. All papers are available free of charge for download. Publishing of papers is free of any costs for the authors.
Each submitted paper runs through a standard peer review process.
Magdeburger Verein für Technische Mechanik e.V.
An Approach Based on Bayesian Networks for Query Selectivity Estimation
The efficiency of a query execution plan depends on the accuracy of the selectivity estimates given to the query optimiser by the cost model. The cost model makes simplifying assumptions in order to
produce said estimates in a timely manner. These assumptions lead to selectivity estimation errors that have dramatic effects on the quality of the resulting query execution plans. A convenient assumption that is ubiquitous among current cost models is to assume that attributes are independent with each other. However, it ignores potential correlations which can have a huge negative impact on the accuracy of the cost model. In this paper we attempt to relax the attribute value independence assumption without unreasonably deteriorating the accuracy of the cost model. We propose a novel approach based on a particular type of Bayesian networks called Chow-Liu trees to approximate the distribution of attribute values inside each relation of a database. Our results on
the TPC-DS benchmark show that our method is an order of magnitude.
more precise than other approaches whilst remaining reasonably efficient
in terms of time and space.
Max Halford, Philippe Saint-Pierre, Franck Morvan
Shape feature extraction for image recognition with CNN using frequency domain
Saumitra Chauhan's CV
A small effort for internships and jobs. Created based on the Medium Length CV template.