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Binary voting systems, usually represented by simple games, constitute a main DSS topic. A crucial feature of
such a system is the easiness with which a proposal can be collectively accepted, which is measured by the
“decisiveness index” of the corresponding game. We study here several functions related to the decisiveness
of any simple game. The analysis, including the asymptotic behavior as the number n of players increases, is
restricted to decisive symmetric games and their compositions, and it is assumed that all players have a
common probability p to vote for the proposal. We show that, for n large enough, a small variation, either
positive or negative, in p when p=1/2 takes the decisiveness to quickly approach, respectively, 1 or 0.
Moreover, we analyze the speed of the decisiveness convergence.
CitationCarreras, F.; Freixas, J.; Puente, M.A. A note on decisive symmetric games. "Decision support systems", 2011, vol. 51, núm. 3, p. 424-433.
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