Evaluation of Cross Language Information Retrieval Systems : Second Workshop of the Cross Language Evaluation Forum CLEF 2001 Darmstadt Germany September 3–4 2001 Revised Papers This book constitutes the thoroughly refereed post proceedings of the Second Workshop of the Cross Language Evaluation Forum CLEF 2001 held in Darmstadt Germany in September 2001.The 35 revised full papers presented together with two introductory survey articles and a comprehensive appendix were carefully improved during the round of reviewing and selections. The papers are organized in topical sections on systems evaluation experiments mainly cross language monolingual experiments interactive issues and evaluation issues and results