The Cross-Language Evaluation Forum (CLEF) promotes R&D in multilingual information access by (i) developing an infrastructure for the testing, tuning and evaluation of information retrieval systems operating on European languages in both monolingual and cross-language contexts, and (ii) creating test-suites of reusable data which can be employed by system developers for benchmarking purposes.

CLEF 2009 Workshop
30 September - 2 October, Corfu, Greece, in conjunction with ECDL2009.
CLEF2009 Working Notes are now online

CLEF 2008 Post Workshop Proceedings
Evaluating Systems for Multilingual and Multimodal Information Access
Lecture Notes in Computer Science Vol. 5706.


To be included on the CLEF mailing list and for further information, contact:
Carol Peters (


CLEF 2010 will take the form of an independent, peer-reviewed Conference

organised in conjunction with a set of Evaluation Labs

Conference on Multilingual and Multimedia Information Access Evaluation

Padua, Italy, 20 - 23 September 2010


For all information, see the CLEF2010 website


CLEF test collections are available on the ELDA Catalog

CLEF 2008-2009 was an activity of the TrebleCLEF Coordination Action under the Seventh Framework Programme of the European Commission. TrebleCLEF organised a set of dissemination activities in the multilingual information access field and published a set of Best Practice recomendations. To find out more see