Optimization of continuous queries with shared expensive filters

@inproceedings{Munagala2007OptimizationOC,
  title={Optimization of continuous queries with shared expensive filters},
  author={Kamesh Munagala and Utkarsh Srivastava and Jennifer Widom},
  booktitle={PODS},
  year={2007}
}
We consider the problem of optimizing and executing multiple continuous queries, where each query is a conjunction of filters and each filter may occur in multiple queries. When filters are expensive, significant performance gains are achieved by sharing filter evaluations across queries. A shared execution strategy in our scenario can either be fixed, in which filters are evaluated in the same predetermined order for all input, or adaptive, in which the next filter to be evaluated is chosen at… CONTINUE READING
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