1Multidisciplinary Oncology Centre (CePO), Lausanne, Switzerland 2Ludwig Institute for Cancer Research (LICR), Lausanne Branch, Lausanne, Switzerland 3Department of Visceral Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland 4National Centre for Competence in Research (NCCR) Molecular Oncology, Swiss Institute for Experimental Cancer Research (ISREC), Epalinges, Swi...

This paper studies coalition formation and payoff division in apex games under the following assumptions: first, payoff division can only be agreed upon after the coalition has formed (two-stage bargaining); second, negotiations in the coalition can break down, in which case a new coalition may be formed (reversible coalitions). In contrast with the results of other two-stage models, all minima...

In this paper, we examine whether farsighted players form the e¢ cient grand coalition structure in coalition formation games. We propose a stability concept for a coalition structure, called sequentially stability, when only bilateral mergers of two separate coalitions are feasible because of high negotiation costs. We provide an algorithm to check the sequential stability of the grand coaliti...

We introduce and study higher-order coalition logic, a multi modal monadic second-order logic with operators [{x}ψ]φ expressing that the coalition of all agents satisfying ψ(x) can achieve a state in which φ holds. We use neighborhood semantics to model extensive games of perfect information with simultaneous actions and we provide a framework reasoning about agents in the same way as it is rea...

Congenital coalition of pisiform and hamate is rare and had been considered asymptomatic in the first reports. The authors report a case of bilateral pisiform-hamate coalition in a young patient, causing symptoms of median nerve compression in the carpal tunnel and attritional changes on digital flexor tendons. This type of coalition had not previously been related to such symptoms. Additionall...

Agent coalition is an important manner of agents’ coordination and cooperation. Forming a coalition, agents can enhance their ability to solve problems and obtain more utility. In this paper, a novel multi-task coalition parallel formation strategy is presented, and the conclusion that the process of multi-task coalition formation is a Markov Decision Process is testified theoretically. Moreove...

Current theories of coalition formation in decision processes of systems at the level of the group lack generality in that some theories do not predict which coalitions are likely to form while others make predictions in only a narrow range of conditions. A model of coalition formation is proposed which predicts coalition formation in a variety of situations. Comparisons between predicted and o...

Consensus Games (CGs) are a novel approach to modelling coalition formation in multi-agent systems inspired by threshold models and quorum sensing found in sociological and biological systems. In a consensus game, each agent’s degree of commitment to the coalitions in which it may participate is expressed as a quorum function, and an agent is willing to participate in a coalition if and only if...