Overview of WebCLEF 2006

Krisztian Balog, Leif Azzopardi, Jaap Kamps, Maarten De Rijke

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

5 Citations (Scopus)


We report on the CLEF 2006 WebCLEF track devoted to cross lingual web retrieval. We provide details about the retrieval tasks, the used topic set, and the results of the participants. WebCLEF 2006 used a stream of know-item topics consisting of: (i) manual topics (including a selection of WebCLEF 2005 topics, and a set of new topics) and (ii) automatically generated topics (generated using two techniques). The results over all topics show that current CLIR systems are very effective, retrieving on average the target page in the top ranks. Manually constructed topics result in higher performance than and automatically generated ones. And finally, the resulting scores on automatic topics provide a reasonable ranking of the systems, showing that automatically generated topics are an attractive alternative in situations where manual topics are not readily available.
Original languageEnglish
Title of host publicationEvaluation of Multilingual and Multi-modal Information Retrieval
Subtitle of host publication7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers
EditorsCarol Peters, Paul Clough, Frederic C. Gey, Jussi Karlgren, Bernardo Magnini, Douglas W. Oard, Maarten de Rijke, Mazimilian Stempfhuber
Place of PublicationBerlin, Heidelberg
Number of pages17
ISBN (Print)978-3-540-74998-1
Publication statusPublished - 6 Sep 2007
Externally publishedYes

Publication series

NameLecture Notes in Computer Science
PublisherSpringer Verlag


  • WebCLEF
  • cross lingual web retrieval


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