Summability criterion: Difference between revisions

Line 18:

In many [[Condorcet method]]s, each ballot can be represented as a two-dimensional square array referred to as a pairwise matrix. The sum of these matrices may be reported from each precinct.

[[Category:Voting system criteria]]

== Requirements ==

Line 72:

Line 70:

====== Median methods ======

Alternatively, precincts may sum up the number of times each candidate was ranked at each of the <math>c</math> possible ranks (or grades). This ''positional matrix'' can then be used to compute the result for any weighted positional method after the fact, or for median-based methods like [[:Category:Graded Bucklin methods|~~Category:Graded~~ Bucklin methods]]. This shows a contrast between median methods and point-scoring methods, where the grade level doesn't matter, only the strength/quality/degree of the grade (i.e. in points-scoring methods, two 1/5s are equivalent to one 2/5).

Alternatively, precincts may sum up the number of times each candidate was ranked at each of the <math>c</math> possible ranks (or grades). This ''positional matrix'' can then be used to compute the result for any weighted positional method after the fact, or for median-based methods like [[:Category:Graded Bucklin methods|graded Bucklin methods]]. This shows a contrast between median methods and point-scoring methods, where the grade level doesn't matter, only the strength/quality/degree of the grade (i.e. in points-scoring methods, two 1/5s are equivalent to one 2/5).

===== Cardinal methods =====