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Computer model of the Banzhaf power index from the Wolfram Demonstrations Project. The Banzhaf power index, named after John Banzhaf (originally invented by Lionel Penrose in 1946 and sometimes called Penrose–Banzhaf index; also known as the Banzhaf–Coleman index after James Samuel Coleman), is a power index defined by the probability of changing an outcome of a vote where voting rights ...
John Francis Banzhaf III (/ ˈ b æ n z. h ɑː f /; [1] born July 2, 1940) is an American public interest lawyer, legal activist, and law professor at the George Washington University Law School. He is the founder of an antismoking advocacy group, Action on Smoking and Health . [ 2 ]
The Banzhaf power index and the Shapley–Shubik power index provide more accurate measures of voting power, by estimating the probability that an individual voter's ballot will be decisive. Such indices often give counterintuitive results.
This is justified by the fact that, due to the square root law of Penrose, the a priori voting power (as defined by the Penrose–Banzhaf index) of a member of a voting body is inversely proportional to the square root of its size. Under certain conditions, this allocation achieves equal voting powers for all people represented, independent of ...
Ensuring the 'voting power' is proportional to the size of constituencies is a problem of entitlement. There are a number of methods which compute a voting power for different sized or weighted constituencies. The main ones are the Shapley–Shubik power index, the Banzhaf power index.
The producer price index released a day earlier on January 14 reported a modest 0.3% increase in wholesale prices in December, rising 3.3% year over year, up from 3% in November.
U.S. President-elect Donald Trump refused on Tuesday to rule out using military or economic action to pursue acquisition of the Panama Canal and Greenland, part of a broader expansionist agenda he ...
Power index may refer to: Banzhaf power index; Shapley–Shubik power index This page was last edited on 1 August 2024, at 22:05 (UTC). Text is available under the ...