Lessons from BMIR-J2: A test collection for Japanese IR systems

Tsuyoshi Kitani^*, Haruo Kimoto, Toshikazu Fukushima, Tetsuya Sakai, Hiroshi Tsuruoka, Yasushi Ogawa, Ikuo Keshi, Kunio Matsui, Takenobu Tokunaga, Hidekazu Nakawatase, Tetsuya Ishikawa, Jun Toyoura, Yoshihiro Ueda, Teru Agata