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Intelligent Information Agents pp 50–78Cite as

Picsel and Xyleme: Two Illustrative Information Integration Agents

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Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 2586))

Abstract

An information integration agent provides a uniform query interface to a collection of distributed and heterogeneous information sources, giving users or other agents the illusion that they interrogate a centralized and homogeneous information system. In this chapter we focus on integration information agents that follow a mediator approach. A mediator is based on the specification of a single mediated schema describing a domain of interest, and on a set of source descriptions expressing how the content of each source available to the system is related to the domain of interest. These source descriptions, also called mappings because they model the correspondence between the mediated schema and the schemas of the data sources, play a central role in the query answering process. We present two recent information integration agents, namely Picsel and Xyleme, which are illustrative of two radically different choices concerning the expressivity of the mediated schema.1

This chapter is a survey and a summary of two publications [18],[13].

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Author information

Authors and Affiliations

  1. University of Paris Sud - CNRS (L.R.I) & INRIA (Futurs), LRI, Building 490, University of Paris-Sud, F-91405, Orsay Cedex, France

    Marie-Christine Rousset & Chantal Reynaud

Authors
  1. Marie-Christine Rousset
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  2. Chantal Reynaud
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Editor information

Editors and Affiliations

  1. German Research Center for Artifical Intelligence Multiagent Systems Group, Stuhlsatzenhausweg 3, 66123, Saarbrücken, Germany

    Matthias Klusch

  2. Dipartimento di Ingegneria dell’Informazione, Università di Modena e Reggio Emilia, Via Vignolese 905, 41100, Modena, Italy

    Sonia Bergamaschi

  3. Department of Computing Science, University of Aberdeen King’s College, AB24 5UE, Aberdeen, UK

    Pete Edwards

  4. Austrian Research Institute for Artificial Intelligence, Schottengasse 3, 1010, Vienna, Austria

    Paolo Petta

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Rousset, MC., Reynaud, C. (2003). Picsel and Xyleme: Two Illustrative Information Integration Agents. In: Klusch, M., Bergamaschi, S., Edwards, P., Petta, P. (eds) Intelligent Information Agents. Lecture Notes in Computer Science(), vol 2586. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36561-3_3

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  • DOI: https://doi.org/10.1007/3-540-36561-3_3

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-00759-3

  • Online ISBN: 978-3-540-36561-7

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