Cognitive Systems and Information Processing : 6th International Conference, ICCSIP 2021, Suzhou, China, November 20-21, 2021, Revised Selected Papers / by ICCSIP (Conference) (6th : 2021 : Suzhou, China), organiser 643008, Sun, Fuchun, 1964-, editor 600994, Hu, Dewen, editor 600995, Wermter, Stefan, editor 643009, Yang, Lei, editor 643010, Liu, Huaping, 1976-, editor 600996, Fang, Bin, editor 642896