The Cross-Language Evaluation Forum (CLEF) supports global digital library applications 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.
In 2005, the Interactive Information Discovery and Delivery (i2d2) project particpated in two CLEF tracks: WebCLEF (web information retrieval) and GeoCLEF (geospatial information retrieval). In this talk, I will describe our motivation for involvement, the systems used, preliminary performance evaluation, and a number of challenges for future research.