Shapley–Shubik power index

ID: shapley-shubik-power-index

The Shapley–Shubik power index is a concept from cooperative game theory that measures the power or influence of individual members in a decision-making body, such as a voting system. Developed independently by Lloyd Shapley and Martin Shubik in the early 1950s, the index quantifies the contribution of each player (or voter) to the success of a coalition of players.

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