Spatio-temporal data warehouses using an adaptive cell-based approach

  • Authors:
  • Wonik Choi;Dongseop Kwon;Sangjun Lee

  • Affiliations:
  • Thinkware Systems Corporation, Songpa-Gu, Seoul, Republic of Korea;School of Electrical Engineering and Computer Science, Seoul National University, Seoul, Republic of Korea;School of Computing, Soongsil University, Seoul, Republic of Korea

  • Venue:
  • Data & Knowledge Engineering
  • Year:
  • 2006

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Abstract

Most of the framework for supporting OLAP operations over immense amounts of spatio-temporal data is based on multi-tree structures. The multi-tree frameworks, however, are hardly applicable to spatio-temporal OLAP in practice, due mainly to high management costs and low query efficiency. To overcome the limitations of such multi-tree frameworks, we propose a new approach called ST-Cube (spatio-temporal cube), which is an adaptive cell-based, total-ordered and prefix-summed cube for spatio-temporal data warehouses. Our extensive performance studies show that the ST-Cube requires less space and achieves higher query performance than multi-tree frameworks, under various operational conditions.