Decentralized Data Management for the Semantic Web
Gestion décentralisée de données du web sémantique
Résumé
The semantic web is an extension of the web where information has a
precise meaning. Thousands of linked datasets are available
on the web. Important problems concerning quality, deep web
access and availability still unsolved.
For data quality, we propose to transform the web of data
into a read/write web of data. A data consumer will able
to correct an error. Allowing consumers to write the semantic web
poses the problem of data consistency. We define synchronization
algorithms for RDF data model.
To access to the deep web, we propose a mediator approach allowing to combine semantic data and deep web data. The problem is to improve the performance of queries in the presence of a large number of data sources.
Finally, to ensure the availability, we propose a replication model
for the web of data. The problem is to optimize federated SPARQL
queries in the presence of replicas selected at queries execution time.
Origine : Fichiers produits par l'(les) auteur(s)
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