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Effective Space Usage Estimation for Sliding-Window Skybands
Joint Authors
Chen, Lijun
Zhao, Jiakui
Huang, Qun
Yang, Liang Huai
Source
Mathematical Problems in Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-30
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Skyline query computes all the “best” elements which are not dominated by any other elements and thus is very important for decision-making applications.
Recently, it is generalized to skyband query and a k-skyband query returns those elements dominated by no more than k, of other elements.
To incorporate the skyband operator into the stream engine for monitoring skybands over sliding windows, space usage estimation for skyband operator becomes a critical issue in the query optimizer.
In this paper, we firstly introduce the skyband sketch as the cost model.
Based on the cost model, we propose an approach for estimating the space usage of skyband operator over sliding windows of data streams under the assumptions of statistical independence across dimensions, no duplicate values over each dimension, and dimension domains totally ordered.
Experiments verify that our approaches can estimate the space usage effectively over arbitrarily distributed data.
To the best of our knowledge, this is the first work that attempts to address the issue and proposes effective approaches to solve it.
American Psychological Association (APA)
Chen, Lijun& Zhao, Jiakui& Huang, Qun& Yang, Liang Huai. 2010. Effective Space Usage Estimation for Sliding-Window Skybands. Mathematical Problems in Engineering،Vol. 2010, no. 2010, pp.1-15.
https://search.emarefa.net/detail/BIM-501390
Modern Language Association (MLA)
Chen, Lijun…[et al.]. Effective Space Usage Estimation for Sliding-Window Skybands. Mathematical Problems in Engineering No. 2010 (2010), pp.1-15.
https://search.emarefa.net/detail/BIM-501390
American Medical Association (AMA)
Chen, Lijun& Zhao, Jiakui& Huang, Qun& Yang, Liang Huai. Effective Space Usage Estimation for Sliding-Window Skybands. Mathematical Problems in Engineering. 2010. Vol. 2010, no. 2010, pp.1-15.
https://search.emarefa.net/detail/BIM-501390
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-501390