Responsibility has long been a subject of study in law and philosophy. More recently, it became a focus of AI literature. The article investigates the computational complexity of two important properties of responsibility in collective decision-making: diffusion and gap. It shows that the sets of diffusion-free and gap-free decision-making mechanisms are Π2-complete and Π3-complete, respectively. At the same time, the intersection of these classes is Π2-complete.
@article{arxiv.2507.02582,
title = {Responsibility Gap and Diffusion in Sequential Decision-Making Mechanisms},
author = {Junli Jiang and Pavel Naumov},
journal= {arXiv preprint arXiv:2507.02582},
year = {2025}
}