An Efficient Approach for Real-Time Processing of RDSZ-Based Compressed RDF Streams

  • Ndéye Bousso Déme
  • Amadou Fall Dia
  • Aliou Boly
  • Zakia Kazi-Aoul
  • Raja Chiky
Chapter
Part of the Studies in Computational Intelligence book series (SCI, volume 722)

Abstract

In recent years, the volume of generated RDF graphs streams from different fields of applications is very large and therefore difficult to process in an optimized manner. Indeed, processing such data in conventional triplestores can be costly in terms of execution time and memory consumption. Several works have examined data compression approach both on static and dynamic RDF data. In addition to those based on stored RDF data, two recent compression algorithms RDSZ and ERI were focused on RDF streams. Continuous compressed format requires less memory space but cannot be exploited through SPARQL queries. In this paper, we propose an approach for continuous querying RDSZ-based RDF streams without decompression phase. We add three algorithms from simple to aggregate query execution over RDSZ compressed items. Our experimentation use real datasets to demonstrate the effectiveness and efficiency of our proposition in term of query execution time and memory save.

Keywords

RDF streams RDSZ Compression Continuous querying 

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Ndéye Bousso Déme
    • 1
  • Amadou Fall Dia
    • 2
  • Aliou Boly
    • 1
  • Zakia Kazi-Aoul
    • 2
  • Raja Chiky
    • 2
  1. 1.LID LabUCADDakar-FannSenegal
  2. 2.LISITE LabISEPParisFrance

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