Automatic grouping and text data augmentation about behavioral and psychological symptoms of dementia in Ninchisho Chienowa-net. - Naoko Kosugi; Shunnosuke Shimizu; Hiroaki Kazui; Shunsuke Sato; Kenji Yoshiyama; Naoto Kamimura; Waki Nagakura; Yumi Ikeda; Manabu Ikeda (iiWAS, 2021)