Integration of Heterogeneous Information Sources

  • Marion Kaukal
  • Hannes Werthner


The description of tourism products and services can be characterized by heterogeneity. Suppliers use — in most of the cases — very different concepts and vocabularies to describe their products and services. Even within a specific domain such as hospitality, varying terms as well as structures refer to the same concepts. Obviously, this represents a barrier to automated communication on the WWW. In the following, we present a solution to that problem. It is based on a mediated architecture assuring interoperability on a tourism market — without forcing individual suppliers to agree on a common standard data model. It is shown how semantic modeling — using the Resource Description Framework (RDF) — provides new possibilities for unifying distributed heterogeneous data models.


Resource Description Framework Message Type Document Type Definition Message Format Result View 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Werthner, H., Klein, S.: Information Technology and Tourism — A Challenging Relationship. Springer. Vienna. 1999.CrossRefGoogle Scholar
  2. 2.
    Bray, T., Paoli, J., Sperberg-Mc Queen, C.M.: Extensible Markup Language (XML) 1.0, W3C Recommendation., 1998-02-10Google Scholar
  3. 3.
    Malhotra, A., Maloney, M.: XML Schema Requirements. W3C Note,, 1999-02-15.Google Scholar
  4. 4.
    Lassila, O.: Web Metadata: A Matter of Semantics. IEEE Computer. July/August 1998. pp 30–37.Google Scholar
  5. 5.
    Lassila, O., Swick, R. R.: Resource Description Framework (RDF) Model and Syntax Specification. W3C Recommendation,, 1999-02-22Google Scholar
  6. 6.
    The W3C MetadataActivity: Google Scholar
  7. 7.
    Berners-Lee, T., Fielding, R., Irvine, U.C., Masinter, L.: Uniform Resource Identifiers (URI): Generic Syntax. Internet Engineering Task force Network Working Group. RFC 2396.., August 1998.Google Scholar
  8. 8.
    Brickley, D., Guha, R. V.: Resource Description Framework (RDF) Schema Specification. W3C Proposed Recommendation, 1999-03-03Google Scholar
  9. 9.
    Bray, T., Hollander, D., Layman, A.: Namespaces in XML, W3C Recommendation. Google Scholar
  10. 10.
    Wiederhold, G., Genesereth, M.: The Conceptual Basis for Mediation Services. IEEE Expert Intelligent Systems 12/5,38–47,1997.Google Scholar
  11. 11.
    Uschold, M., Gruninger, M.: 1996, Ontologies: Principles, Methods and Applications, Knowledge Engineering Review, 11/2.Google Scholar
  12. 12.
    The Knowledge Interchange format(KIF); Scholar
  13. 13.
    CycL: The CYC Representation Language; Google Scholar
  14. 14.
    The LOOM Project: Google Scholar

Copyright information

© Springer-Verlag Wien 2000

Authors and Affiliations

  • Marion Kaukal
    • 1
  • Hannes Werthner
    • 1
  1. 1.Department of Information SystemsVienna University of Economics and Business AdministrationAustria

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