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MDDQL-Stat: data querying and analysis through integration of intentional and extensional semantics \ud

By Epaminondas Kapetanios, David Baer, Bjorn Glaus and Paul Groenewoud

Abstract

We would like to present a prototype system enabling a\ud rather empirical than a formal approach to the problem\ud of posing queries to a semantically rich (quality aspects,\ud semantic distance, etc.) data integration system {G,S,M} (Global schema, Sources, Mediation) through integration\ud not only of intensional but also of extensional semantics.\ud While the first is provided by an alphabet Ag, as given by\ud an ontology based global schema G, and a high level query\ud language (conjunction/disjunction + inequalities + statistical operations), the latter enables synthesizing of data source specific and previously transformed query results according to well-defined set operations for heterogeneous, distributed data sources. Our approach contrasts with other GAV (Global-As-View) related architectures for mediation of integrated read-only views, in that it simplifies query processing while preserving flexibility when adding new data sources, despite the inherited complexity of mappings due to enhanced semantic description of data (semantic distance, quality parameters, etc.) such that statistical results and comparisons become more meaningful.\u

Topics: UOW3
Publisher: IEEE Computer Society
OAI identifier: oai:westminsterresearch.wmin.ac.uk:861
Provided by: WestminsterResearch

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Citations

  1. (2003). An approach for the extensional integration of data sources with heterogeneous representation formats.
  2. (2001). Answering Queries Using Views: A Survey.
  3. (2002). Architecture and Implementation of an XQuery-based Information Integration Platform. Data Engineering Bulletin,
  4. (1999). Context Interchange: New Features and Formalisms for the Intelligent Integration of Information.
  5. (2002). Data integration: a theoretical perspective.
  6. Information Integration Using Logical Views.
  7. (1997). Managing semantic heterogeneity in databases: A theoretical perspective.
  8. (2002). Query Construction through Meaningful Suggestions of Terms. In
  9. (1999). Resource Description Framework (RDF) model and syntax specification. Technical report, World Wide Web Consortium,
  10. (1995). The Information Manifold.

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