Power truncation: Difference between revisions
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'''Power Truncation''', in a method which considers [[Minmax|pairwise opposition]], means that for every pair of candidates ''a'' and ''b'' truncated (not ranked) on a given ballot, a full vote of opposition is scored for ''each'' over the other, with the goal being to increase the maximum opposition sustained by those candidates even more than a random ordering would. Power Truncation could be an option that the voter may choose to use, or it could be built into a method's rules that this is how truncation is treated. |
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{{Merge|Power Truncation|date=February 2019}} |
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With a pairwise-count method, when a voter chooses the power truncation option, that means that s/he wants, for any candidate s/he doesn't rank, that his/her ballot be counted as voting every one of the other candidates against that one. |
With a pairwise-count method, when a voter chooses the power truncation option, that means that s/he wants, for any candidate s/he doesn't rank, that his/her ballot be counted as voting every one of the other candidates against that one. |
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So every candidate s/he doesn't rank is treated as if it were last-ranked on |
So every candidate s/he doesn't rank is treated as if it were last-ranked on his-her ballot, with all the others ranked over that candidate. |
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his-her ballot, with all the others ranked over that candidate. |
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Mike Ossipoff proposed and named this option. It was thought mainly to be usable with [[MMPO|Minmax (pairwise opposition)]] specifically. |
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[[Category:Voting method features]] |
[[Category:Voting method features]] |
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Latest revision as of 03:26, 12 August 2019
Power Truncation, in a method which considers pairwise opposition, means that for every pair of candidates a and b truncated (not ranked) on a given ballot, a full vote of opposition is scored for each over the other, with the goal being to increase the maximum opposition sustained by those candidates even more than a random ordering would. Power Truncation could be an option that the voter may choose to use, or it could be built into a method's rules that this is how truncation is treated.
With a pairwise-count method, when a voter chooses the power truncation option, that means that s/he wants, for any candidate s/he doesn't rank, that his/her ballot be counted as voting every one of the other candidates against that one.
So every candidate s/he doesn't rank is treated as if it were last-ranked on his-her ballot, with all the others ranked over that candidate.
Mike Ossipoff proposed and named this option. It was thought mainly to be usable with Minmax (pairwise opposition) specifically.