WT-heuristics: a heuristic method for efficient operator ordering

Authors:
Jun-Ki Min
Affiliations:
School of Internet-Media Engineering, Korea University of Technology and Education, Byeongcheon-myeon, Cheonan, Chungnam, Republic of Korea
Venue:
DASFAA'07 Proceedings of the 12th international conference on Database systems for advanced applications
Year:
2007

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Abstract

In this paper, we focus on the processing of stream data whose characteristics vary unpredictably by over time. Particularly, we suggest a method which generates an efficient operator execution order called WT-Heuristic. Our method changes the execution order with respect to the change of data characteristics with minimum overheads.