Probabilistic Coalition Structure Generation.

We introduce a model for probabilistic coalition structure generation (PCSG). This model generalizes the standard CSG model to the case when some of the agents considered at start may be finally defective but a new coalition structure based on the remaining agents cannot be formed. In a PCSG, one seeks to maximize the expected utility of a coalition structure. Two policies making precise how the value of a coalition structure evolves when some agents are missing are also introduced.