[EM] Schulze STV question

Markus Schulze markus.schulze at alumni.tu-berlin.de
Sun Jan 15 10:55:51 PST 2017


Hallo,

as an alternative, I recommend that the
Schulze proportional ranking method should be used
and that the first S candidates (where S is the number
of seats) should be elected. For example A90, the
runtime to calculate the first S=12 candidates is
below 0.1 s.

This recommendation also has the advantage that it
is house-monotonic.

Only in 3 of the 66 examples in Tideman's database,
Schulze STV and Schulze proportional ranking lead to
different results:

* In example A10, Schulze STV chooses MNP. The first
   S=3 candidates of Schulze proportional ranking
   are AMP or MNP.

• In example A13, Schulze STV chooses KT. The first S=2
   candidates of Schulze proportional ranking are IT.

• In example A34, Schulze STV chooses ABCDEFGHJKMN.
   The first S=12 candidates of Schulze proportional
   ranking are ABCDEFHJKLMN.

Markus Schulze



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