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Efficient Query Processing for SPARQL Federations with Replicated Fragments by Montoya, Gabriela; Skaf-Molli, Hala; Molli, Pascal; Vidal, Maria-Esther is a scholarly article available to read on EtoBox.

What is Efficient Query Processing for SPARQL Federations with Replicated Fragments about?

Low reliability and availability of public SPARQL endpoints prevent real-world applications from exploiting all the potential of these querying infras-tructures. Fragmenting data on servers can improve data availability but degrades performance. Replicating fragments can offer new tradeoff between performance and availability. We propose FEDRA, a framework for querying Linked Data that takes advantage of client-side data replication, and performs a source selection algorithm that aims to reduce the number of selected public SPARQL endpoints, execution time, and intermediate results. FEDRA has been implemented on the state-of-the-art query engines ANAPSID and FedX, and empirically evaluated on a variety of real-world datasets.

Author

Montoya, Gabriela; Skaf-Molli, Hala; Molli, Pascal; Vidal, Maria-Esther

Published

2015

Language

EN