. . "Hayakawa, Keiichiro" . "PMC7206274" . . "no-cc" . "PMC" . . . "be1ce05d0df173cfd6ffeaf6cffeb60d1f5aca69" . . . "Ishii, Yoshinao" . "2020-04-17"^^ . "Koide, Satoshi" . . "10.1007/978-3-030-47436-2_51" . "L0-norm Constrained Autoencoders for Unsupervised Outlier Detection" . "Advances in Knowledge Discovery and Data Mining" .