François Boisson

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Given a large number of data sources, each of them being indexed by attributes from a predefined set A and given a query q over a subset Q of A with size k attributes, we are interested in identifying the set of all possible combinations of sources such that the union of their attributes covers Q. Each combination c may lead to a rewriting of q as a join(More)
This paper presents OpenXView, a model for open, large scale XML data integration systems, characterized by the autonomy of users that publish XML data on a common topic. Autonomy implies frequent and unpredictable changes to data and a high degree of structure heterogeneity. OpenXView provides an original integration schema, based on an hybrid ontology-XML(More)
Search for multimedia content by the large public is expected to experience at least two major evolutions in the near future: addition of content-based criteria to those issued from textual metadata and significant increase in the volume of digitized content available at each provider. In this context, most providers will need a local index in order to(More)
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