Français Anglais
Accueil Annuaire Plan du site
Accueil > Evenements > Séminaires
Séminaire d'équipe(s) Artificial Intelligence and Inference Systems
Heuristic based Query Optimisation for SPARQL
Irini Fundulaki

21 October 2011, 14:00 - 21 October 2011, 15:00
Salle/Bat : 445/PCRI-N
Contact :

Activités de recherche :

Résumé :
During the last decade we have witnessed an increase in the amount of semantic data. The so called Web of Data extents the current Web to a global data space connecting data from diverse domains. A central issue in such setting is the efficient support for storing, querying, and manipulating semantic RDF data. In this work we focus on the problem of scalable processing and optimisation of semantic queries expressed in SPARQL using modern relational engines. Existing solutions heavily rely on statistics for the stored RDF graphs, and on cost-based planning algorithms. Extensive data statistics are quite expensive to compute and maintain for large scale and always evolving semantic data. The main challenge is to devise heuristic-based query
optimisation techniques generating near to optimal execution plans without any knowledge of the underlying datasets.

Pour en savoir plus :
Séminaires
Programming computing media (reporté)
Combinatorics
Friday 18 September 2020 - 14:30
Salle : 445 - PCRI-N
Frédéric Gruau .............................................

forum-dev Continuous Integration
Friday 05 June 2020 - 10:00
Salle : 0 - 650
Erik Bray .............................................

Large-scale Spectral Clustering for GPU-based Plat
High-performance computing
Tuesday 24 March 2020 - 10:30
Salle : 465 - PCRI-N
Guanlin He .............................................

Recherche Opérationnelle à Google
Stochastic Combinatorial Optimization
Thursday 12 March 2020 - 14:30
Salle : 445 - PCRI-N
Laurent Perron .............................................

Forum dev-LRI
Wednesday 05 February 2020 - 14:00
Salle : 455 - PCRI-N
Erik Bray .............................................