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Parallel Algorithms are Good for Streaming

Demetrescu, Camil; Escoffier, Bruno; Moruz, Gabriel; Ribichini, Andrea (2006), Parallel Algorithms are Good for Streaming. https://basepub.dauphine.fr/handle/123456789/6303

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cahierLamsade234.pdf (263.4Kb)
Type
Document de travail / Working paper
Date
2006
Publisher
Université Paris-Dauphine
Series title
Cahier du LAMSADE
Series number
234
Published in
Paris
Pages
16
Metadata
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Author(s)
Demetrescu, Camil
Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Escoffier, Bruno
Moruz, Gabriel
Ribichini, Andrea
Abstract (EN)
In this paper we show how PRAM algorithms can be turned into efficient streaming algorithms for several classical combinatorial problems in the W-Stream model. In this model, at each pass one input stream is read and one output stream is written; streams are pipelined in such a way that the output stream produced at pass i is given as input stream at pass i +1. Our techniques yield near-optimal algorithms (up to polylog factors) for several classical problems in this model including sorting, connectivity, minimum spanning tree, biconnected components, and maximal independent set.
Subjects / Keywords
W-stream model; combinatorial problems; streaming; PRAM algorithms

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