Query Merging: Improving Query Subscription Processing in a Multicast Environment

@article{Crespo2003QueryMI,
  title={Query Merging: Improving Query Subscription Processing in a Multicast Environment},
  author={Arturo Crespo and Orkut Buyukkokten and Hector Garcia-Molina},
  journal={IEEE Trans. Knowl. Data Eng.},
  year={2003},
  volume={15},
  pages={174-191}
}
This paper introduces techniques for reducing data dissemination costs of query subscriptions in a multicast environment. The reduction is achieved by merging queries with overlapping, but not necessarily equal, answers. The paper formalizes the query-merging problem and introduces a general framework and cost model for evaluating merging. We prove that the problem is NP-hard and propose exhaustive algorithms and three heuristic algorithms: the Pair Merging Algorithm, the Directed Search… CONTINUE READING
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