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BMIR-J2Sakai, Tetsuya; Ueda, Yoshihiro; Tokunaga, Takenobu; Tsuruoka, Hiroshi; Nakawatase, Hidekazu; Agata, Teru; Kando, Noriko; Kitani, Tsuyoshi; Ogawa, Yasushi; Ishikawa, Tetsuya; Kimoto, Haruo; Keshi, Ikuo; Toyoura, Jun; Fukushima, Toshikazu; Matsui, Kunio · ACM SIGIR Forum · 1999