Satoshi Horikawa, Chiyonosuke Nemoto, Keishi Tajima, Masaki Matsubara, Atsuyuki Morishima, “An Adaptive Feature Selection Method for Learning-to-Enumerate Problem”, The 46th European Conference on Information Retrieval (ECIR), pp. 122-136, Glasgow, Scotland, 24th - 28th March, 2024. (Accepted)