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Auflistung nach Autor:in "Lehti, Patrick"

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  • Konferenzbeitrag
    Semantic methods and tools for information portals
    (INFORMATIK 2003 – Innovative Informatikanwendungen, Band 1, Beiträge der 33. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2003) Agarwal, Sudhir; Fankhauser, Peter; Gonzalez-Ollala, Jorge; Hartmann, Jens; Hollfelder, Silvia; Jameson, Anthony; Klink, Stefan; Lehti, Patrick; Ley, Michael; Rabbidge, Emma; Schwarzkopf, Eric; Shrestha, Nitesh; Stojanovic, Nenad; Studer, Rudi; Stumme, Gerd; Walter, Bernd; Weber, Alexander
    The paper describes a set of approaches for representing and accessing information within a semantically structured information portal, while offering the possibility to integrate own information. It discusses research performed within the project 'Semantic Methods and Tools for Information Portals (SemI-Port)'. In particular, it focuses on (1) the development of scalable storing, processing and querying methods for semantic data, (2) visualization and browsing of complex data inventories, (3) personalization and agent-based interaction, and (4) the enhancement of web mining approaches for use within a semantics-based portal.
  • Konferenzbeitrag
    XML-based data integration for semantic information portals
    (Informatik 2004, Informatik verbindet, Band 2, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 2004) Lehti, Patrick; Fankhauser, Peter; Stackelberg, Silvia von; Shrestha, Nitesh
    This paper addresses some classical problems to integrate data sources that are heterogeneous in structure with possibly redundant data along a real world example integrating three bibliographic data sources. We show how XML-technology can be applied for the data integration process in a straight-forward manner to populate a data warehouse, how an ontology can be used as common schema, and how a generic, declarative approach can increase flexibility and scalability. Our procedure enables more advanced query functionality for integrated data sources.