Report on the INEX 2003 Workshop, Schloss Dagstuhl, 15-17 December 2003 Norbert Fuhr University of Duisburg-Essen, Germany. fuhr@uni-duisburg.de Mounia Lalmas Queen Mary University of London, UK. mounia@dcs.qmul.ac.uk Introduction The widespread use of the eXtensible Markup Language (XML), especially the increasing use of XML in scienti c data repositories, digital libraries and on the web, brought about an explosion in the development of XML retrieval systems to store and access XML content [BGS+ 03]. These retrieval systems exploit the logical structure of the documents, which is explicitly represented by the XML markup, and retrieve document components (i.e. XML elements) instead of the whole documents. Therefore, XML retrieval systems need not only to nd relevant information in the XML documents, but also to determine the appropriate level of granularity to return to the user. In addition, the relevance of a retrieved element is dependent on meeting both content and structural conditions. Evaluating the e ectiveness of XML retrieval systems requires a test collection where the relevance assessments are provided according to a relevance criterion that takes into account the imposed structural aspects. A test collection as such has been built as a result of two rounds of the Initiative for
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