软件学报
軟件學報
연건학보
JOURNAL OF SOFTWARE
2009年
7期
1839-1853
,共15页
分布式数据流%skyline%持续查询%通信最优
分佈式數據流%skyline%持續查詢%通信最優
분포식수거류%skyline%지속사순%통신최우
distributed data stream%skyline%continuous query%communication optimal
基于非共享策略,围绕着降低系统反应延迟与通信负荷的目标,提出了一种分两阶段渐进求解的分布式算法BOCS(based on the change of skyline),并对算法的关键实现环节,如协调站点与远程站点间的通信、skyline增量的计算等进行了系统优化,使算法在通信负荷与反应延迟上达到了较好的综合性能.理论分析证明,在所有基于非共享策略的算法中,BOCS算法通信最优.大量的对比实验结果也表明,所提出的算法高效、稳定且具有良好的可扩展性.
基于非共享策略,圍繞著降低繫統反應延遲與通信負荷的目標,提齣瞭一種分兩階段漸進求解的分佈式算法BOCS(based on the change of skyline),併對算法的關鍵實現環節,如協調站點與遠程站點間的通信、skyline增量的計算等進行瞭繫統優化,使算法在通信負荷與反應延遲上達到瞭較好的綜閤性能.理論分析證明,在所有基于非共享策略的算法中,BOCS算法通信最優.大量的對比實驗結果也錶明,所提齣的算法高效、穩定且具有良好的可擴展性.
기우비공향책략,위요착강저계통반응연지여통신부하적목표,제출료일충분량계단점진구해적분포식산법BOCS(based on the change of skyline),병대산법적관건실현배절,여협조참점여원정참점간적통신、skyline증량적계산등진행료계통우화,사산법재통신부하여반응연지상체도료교호적종합성능.이론분석증명,재소유기우비공향책략적산법중,BOCS산법통신최우.대량적대비실험결과야표명,소제출적산법고효、은정차구유량호적가확전성.
To reduce system delay and overall communication load, this paper proposes an efficient algorithm BOCS (based on the change of skyline) which is out of share-nothing strategy. BOCS is to solve this issue through progressive refinement by two steps. This paper provides analytical results and they show that BOCS is optimal in terms of the communication overhead among all algorithms which are out of share-nothing strategy. Theoretical analysis and extensive experiments demonstrate that these methods are efficient, stable and scalable.