We study the efficient computation of power indices for weighted voting games with precoalitions amongst subsets of … algorithms for the three most common power indices with precoalitions, i.e., the Owen index, the Banzhaf-Owen index and the … discuss implementations of our algorithms for the three power indices with precoalitions in C++ and review computing times, as …

Power indices have been used to evaluate the allocation of power in a wide range of voting situations. While they use … the language of game theory known measures of a priori voting power are hardly more than statistical expectations assuming …. For normalised indices strategic rejection may increase power. Our notion of a strategic power index is well defined if …

Traditional power indices ignore preferences and strategic interaction. Equilibrium analysis of particular non … lingering debate about the right approach to power analysis. A unified framework that works both sides of the street is … developed here. It rests on a notion of a posteriori power which formalizes players' marginal impact to outcomes in cooperative …