Knowledge Sharing in Coalitions
This work addresses a foundational issue in multi-agent systems for researchers in formal methods and AI, though it appears incremental as it builds on existing coalitional logics.
The paper tackles the problem of how knowledge sharing among agents affects their ability to form coalitions in imperfect information concurrent games, proposing a new semantics for alternating-time temporal logic that preserves desirable properties of coalition ability.
The aim of this paper is to investigate the interplay between knowledge shared by a group of agents and its coalition ability. We investigate this relation in the standard context of imperfect information concurrent game. We assume that whenever a set of agents form a coalition to achieve a goal, they share their knowledge before acting. Based on this assumption, we propose a new semantics for alternating-time temporal logic with imperfect information and perfect recall. It turns out that this semantics is sufficient to preserve all the desirable properties of coalition ability in traditional coalitional logics. Meanwhile, we investigate how knowledge sharing within a group of agents contributes to its coalitional ability through the interplay of epistemic and coalition modalities. This work provides a partial answer to the question: which kind of group knowledge is required for a group to achieve their goals in the context of imperfect information.