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Auflistung Nach Schlagwort "Query processing"

Anzeige der Dokumente 21-27 von 27

    • Predictive intelligence in analytics aggregation of partial ordered subsets 

      Kolomvatsos K., Hadjiefthymiades S. (2020)
      Nowadays, the increased amount of users' devices produce huge volumes of data that should be efficiently managed by modern applications. Streams are adopted to deliver data that, usually, are stored into a number of ...

    • Predictive join processing between regions and moving objects 

      Corral, A.; Torres, M.; Vassilakopoulos, M.; Manolopoulos, Y. (2008)
      The family of R-trees is suitable for indexing various kinds of multidimensional objects. TPR*-trees are R-tree based structures that have been proposed for indexing a moving object database, e.g. a data-base of moving ...

    • A query language for multi-version data web archives 

      Meimaris M., Papastefanatos G., Viglas S., Stavrakas Y., Pateritsas C., Anagnostopoulos I. (2016)
      The Data Web refers to the vast and rapidly increasing quantity of scientific, corporate, government and crowd-sourced data published in the form of Linked Open Data, which encourages the uniform representation of heterogeneous ...

    • Spatial batch-queries processing using xBR+-trees in Solid-State Drives 

      Roumelis G., Vassilakopoulos M., Corral A., Fevgas A., Manolopoulos Y. (2018)
      Efficient query processing in spatial databases is of vital importance for numerous modern applications. In most cases, such processing is accomplished by taking advantage of spatial indexes. The xBR+ -tree is an index for ...

    • Voronoi-diagram based partitioning for distance join query processing in spatialhadoop 

      García-García F., Corral A., Iribarne L., Vassilakopoulos M. (2018)
      SpatialHadoop is an extended MapReduce framework supporting global indexing techniques that partition spatial data across several machines and improve query processing performance compared to traditional Hadoop systems. ...

    • What Logical Model Is Suitable for Relational Trajectory Data Warehouses?: Application to Agricultural Autonomous Robots 

      Oikonomou K., Garani G., Bimonte S., Wrembel R. (2022)
      The ability to query vast amount of historical data for statistical analysis and reporting is provided by Data Warehouses. They facilitate Business Intelligence for effective decision-making significantly. In recent years, ...

    • The xbr+-tree: An efficient access method for points 

      Roumelis G., Vassilakopoulos M., Loukopoulos T., Corral A., Manolopoulos Y. (2015)
      Spatial indexes, such as those based on Quadtree, are important in spatial databases for efficient execution of queries involving spatial constraints. In this paper, we present improvements of the xBR-tree (a member of the ...