The INitiative for the Evaluation of XML retrieval (INEX) has, since 2002, been working towards the goal of establishing an infrastructure, in the form of a large XML test collection and appropriate scoring methods, for the evaluation of content-oriented XML retrieval systems. In 2005, 47 organizations registered to participate in INEX. Throughout the year a number of groups dropped out due to resource requirements, while 11 further groups joined. INEX 2005 concluded with a total of 41 active groups. In addition to the main ad-hoc retrieval track, six further research tracks were included in INEX 2005, each studying different aspects of XML information access: interactive, relevance feedback, heterogeneous, natural language processing, and two new tracks for 2005, multimedia and document mining tracks.
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