Hiroshi Uehara, Takayasu Yamaguchi, Quan Bai: Knowledge Management and Acquisition for Intelligent Systems - 17th Pacific Rim Knowledge Acquisition Workshop, PKAW 2020, Yokohama, Japan, January 7-8, 2021, Proceedings. Lecture Notes in Computer Science 12280, Springer 2021, ISBN 978-3-030-69885-0