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doi: 10.1002/cpe.3866
handle: 11568/793914
SummaryThe emergence of real‐time decision‐making applications in domains like high‐frequency trading, emergency management, and service level analysis in communication networks has led to the definition of new classes of queries.Skyline queriesare a notable example. Their results consist of all the tuples whose attribute vector is not dominated (in the Pareto sense) by one of any other tuple. Because of their popularity, skyline queries have been studied in terms of both sequential algorithms and parallel implementations for multiprocessors and clusters. Within theData Stream Processingparadigm, traditional database queries on static relations have been revised in order to operate on continuous data streams. Most of the past papers propose sequential algorithms for continuous skyline queries, whereas there exist very few works targeting implementations on parallel machines. This paper contributes to fill this gap by proposing a parallel implementation for multicore architectures. We propose (i) a parallelization of theeageralgorithm based on the notion ofSkyline Influence Time, (ii) optimizations of the reduce phase and load‐balancing strategies to achieve near‐optimal speedup, and (iii) a set of experiments with both synthetic benchmarks and a real dataset in order to show our implementation effectiveness. Copyright © 2016 John Wiley & Sons, Ltd.
data stream processing, skyline queries, sliding windows, multicore programming
data stream processing, skyline queries, sliding windows, multicore programming
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 11 | |
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| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
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