Approaching the skyline in Z order

Ken C.K. Lee, Baihua Zheng, Huajing Li, Wang Chien Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

160 Scopus citations

Abstract

Given a set of multidimensional data points, skyline query retrieves a set of data points that are not dominated by any other points. This query is useful for multi-preference analysis and decision making. By analyzing the skyline query, we observe a close connection between Z-order curve and skyline processing strategies and propose to use a new index structure called ZBtree, to index and store data points based on Z-order curve. We develop a suite of novel and efficient skyline algorithms, which scale very well to data dimensionality and cardinality, including (1) ZSearch, which processes skyline queries and supports progressive result delivery; (2) ZUp-date, which facilitates incremental skyline result maintenance; and (3) k-ZSearch, which answers k-dominant skyline query (a skyline variant that retrieves a representative subset of skyline results). Extensive experiments have been conducted to evaluate our proposed algorithms and compare them against the best available algorithms designed for skyline search, skyline result update, and k-dominant skyline search, respectively. The result shows that our algorithms, developed coherently based on the same ideas and concepts, soundly outperforms the state-of-the-art skyline algorithms in their specialized domains.

Original languageEnglish (US)
Title of host publication33rd International Conference on Very Large Data Bases, VLDB 2007 - Conference Proceedings
EditorsJohannes Gehrke, Christoph Koch, Minos Garofalakis, Karl Aberer, Carl-Christian Kanne, Erich J. Neuhold, Venkatesh Ganti, Wolfgang Klas, Chee-Yong Chan, Divesh Srivastava, Dana Florescu, Anand Deshpande
PublisherAssociation for Computing Machinery, Inc
Pages279-290
Number of pages12
ISBN (Electronic)9781595936493
StatePublished - Jan 1 2007
Event33rd International Conference on Very Large Data Bases, VLDB 2007 - Vienna, Austria
Duration: Sep 23 2007Sep 27 2007

Publication series

Name33rd International Conference on Very Large Data Bases, VLDB 2007 - Conference Proceedings

Other

Other33rd International Conference on Very Large Data Bases, VLDB 2007
CountryAustria
CityVienna
Period9/23/079/27/07

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Information Systems and Management
  • Information Systems
  • Software

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  • Cite this

    Lee, K. C. K., Zheng, B., Li, H., & Lee, W. C. (2007). Approaching the skyline in Z order. In J. Gehrke, C. Koch, M. Garofalakis, K. Aberer, C-C. Kanne, E. J. Neuhold, V. Ganti, W. Klas, C-Y. Chan, D. Srivastava, D. Florescu, & A. Deshpande (Eds.), 33rd International Conference on Very Large Data Bases, VLDB 2007 - Conference Proceedings (pp. 279-290). (33rd International Conference on Very Large Data Bases, VLDB 2007 - Conference Proceedings). Association for Computing Machinery, Inc.