@inproceedings{kobayashi-etal-2021-case, title = "A Case Study of In-House Competition for Ranking Constructive Comments in a News Service", author = "Kobayashi, Hayato and Taguchi, Hiroaki and Tabuchi, Yoshimune and Koleejan, Chahine and Kobayashi, Ken and Fujita, Soichiro and Murao, Kazuma and Masuyama, Takeshi and Yatsuka, Taichi and Okumura, Manabu and Sekine, Satoshi", editor = "Ku, Lun-Wei and Li, Cheng-Te", booktitle = "Proceedings of the Ninth International Workshop on Natural Language Processing for Social Media", month = jun, year = "2021", address = "Online", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/fix-sig-urls/2021.socialnlp-1.3/", doi = "10.18653/v1/2021.socialnlp-1.3", pages = "24--35" }