N. DI MAURO, T.M.A. BASILE, S. FERILLI, AND F. ESPOSITO

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## 7. I Mplementation Details

7.1. The characteristic function. Concerning the representation of the characteristic function and the search space, given n agents N = { a1, a2,..., an}, we recall that the number of possible coalitions is 2 n - 1. Hence, the characteristic 20