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- 133 creator antonio-maccioni.
- 133 creator roberto-de-virgilio.
- 133 type InProceedings.
- 133 label "Distributed Keyword Search over RDF via MapReduce".
- 133 sameAs 133.
- 133 abstract "Non expert users need support to access linked data available on the Web. To this aim, keyword-based search is considered an essential feature of database systems. The distributed nature of the Semantic Web demands query processing techniques to evolve towards a scenario where data is scattered on distributed data stores. Existing approaches to keyword search cannot guarantee scalability in a distributed environment, because, at runtime, they are unaware of the location of the relevant data to the query and thus, they cannot optimize join tasks. In this paper, we illustrate a novel distributed approach to keyword search over RDF data that exploits the MapReduce paradigm by switching the problem from graph-parallel to data-parallel processing. Moreover, our framework is able to consider ranking during the building phase to return directly the best (top-k) answers in the first (k) generated results, reducing greatly the overall computational load and complexity. Finally, a comprehensive evaluation demonstrates that our approach exhibits very good efficiency guaranteeing high level of accuracy, especially with respect to state-of-the-art competitors.".
- 133 hasAuthorList authorList.
- 133 isPartOf proceedings.
- 133 keyword "Distributed Keyword Search".
- 133 keyword "MapReduce".
- 133 keyword "RDF".
- 133 keyword "Semantic Web".
- 133 title "Distributed Keyword Search over RDF via MapReduce".