Sensitivity of IR systems Evaluation to Topic Difficulty Koji Eguchi author Kazuko Kuriyama author Noriko Kando author 2002-05 text Proceedings of the Third International Conference on Language Resources and Evaluation (LREC’02) Manuel González Rodríguez editor Carmen Paz Suarez Araujo editor European Language Resources Association (ELRA) Las Palmas, Canary Islands - Spain conference publication eguchi-etal-2002-sensitivity https://aclanthology.org/L02-1203/ 2002-05