By Carol Peters (auth.), Carol Peters, Fredric C. Gey, Julio Gonzalo, Henning Müller, Gareth J. F. Jones, Michael Kluck, Bernardo Magnini, Maarten de Rijke (eds.)
The 6th crusade of the pass Language overview discussion board (CLEF) for eu languages was once held from January to September 2005. CLEF is through now a longtime overseas assessment initiative and seventy four teams from world wide submitted effects for a number of of the several review tracks in 2005, in comparison with fifty four teams in 2004. there have been 8 unique evaluate tracks, designed to check the functionality of a variety of structures for multilingual info entry. complete info concerning the layout of the tracks, the methodologies used for assessment, and the consequences received through the contributors are available within the diverse sections of those lawsuits. As continuously the result of the crusade have been mentioned and mentioned on the annual workshop held in Vienna, Austria, September 21-23, instantly following the 9th eu convention on electronic Libraries. The workshop was once attended through nearly one hundred ten educational and commercial researchers and method builders. as well as shows by means of contributors within the crusade, Noriko Kando from the nationwide Institute of Informatics, Tokyo, gave an invited speak at the actions of the NTCIR evaluate initiative for Asian languages. Breakout periods gave contributors an opportunity to debate principles and ends up in element. the ultimate consultation used to be devoted to proposals for actions for CLEF 2006. The displays given on the workshop are available at the CLEF website at: www. clef-campaign. org. we must always wish to thank the opposite contributors of the CLEF steerage Committee for his or her suggestions within the coordination of this event.
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Extra info for Accessing Multilingual Information Repositories: 6th Workshop of the Cross-Language Evalution Forum, CLEF 2005, Vienna, Austria, 21-23 September, 2005, Revised Selected Papers
Best runs of stemmer-based retrieval experiments Stemmer Egothor Egothor Lucene Snowball Run Type brf 5 10, boost 9 3 3 brf 5 60, boost 9 3 1 brf 5 30, boost 9 3 1 brf 5 30, boost 9 3 1 Recall, max = 915 855 843 863 856 Avg. Prec. 400 Queries that contained terms from both title and description fields from the topic files performed better than those that were based on only one source. The weighting of these terms, however, was a major impact factor. Several experiments with different boost values and blind relevance feedback parameters were carried out for each stemmer.
G. by adding topic words that are not already in the dictionaries used by their systems in order to extend coverage. Some CLEF data collections contain manually assigned, controlled or uncontrolled index terms. The use of such terms has been limited to speciﬁc experiments that have to be declared as “manual” runs. Topics can be converted into queries that a system can execute in many different ways. CLEF strongly encourages groups to determine what constitutes a base run for their experiments and to include these runs (oﬃcially or unofﬁcially) to allow useful interpretations of the results.
16%; Run ENMST, TD Auto, Not Pooled] unine [Avg. Prec. 82%; Run UniNEbihu3, TD Auto, Not Pooled] jhu−apl [Avg. Prec. 58%; Run aplbienhue, TD Auto, Not Pooled] 90% 80% Average Precision 70% 60% 50% 40% 30% 20% 10% 0% 0% 10% 20% 30% 40% 50% 60% Interpolated Recall 70% 80% 90% 100% Fig. 7. Bilingual Hungarian CLEF 2005 − Top 5 participants of Ad−Hoc Bilingual X2PT − Interpolated Recall vs Average Precision 100% unine [Avg. Prec. 04%; Run UniNEbipt1, TD Auto, Pooled] jhu−apl [Avg. Prec. 85%; Run aplbiesptb, TD Auto, Not Pooled] miracle [Avg.