Selected papers from the 22nd Workshop “From Objects to Agents'' (WOA 2021)

Synopsis based on the public issue page and editorial: This special issue contains six substantially extended papers selected from WOA 2021. The collection surveys current work at the intersection of agents, multi-agent systems, and machine learning, including explainable symbolic knowledge extraction, emergency-response modelling, simulation, trustworthy robotics, Semantic Web reasoning, and deep reinforcement learning.