Nordic artificial intelligence research and development : 4th Symposium of the Norwegian AI Society NAIS 2022 Oslo Norway May 31 June 1 2022 : revised selected papers This book constitutes the refereed proceedings of the 4th Symposium of the Norwegian AI Society NAIS 2022 held in Oslo Norway during May 31 June 1 2022.The 11 full papers included in this book were carefully reviewed and selected from 17 submissions. They were organized in topical sections as follows: robotics and intelligent systems; ai in cyber and digital sphere; ai in biological applications and medicine; and towards new ai methods.This is an open access book