Circular Tie solution
donald at mich.com
donald at mich.com
Fri Nov 8 06:02:32 PST 1996
Dear List,
Steve wrote:
>Donald suggested a couple [of] improvements to Condorcet.
>
>Ha ha, I get it, even without a :-) hint.
>
>---Steve (Steve Eppley seppley at alumni.caltech.edu)
Donald: I was wondering if I could slip that pass the pairwise guys - you
are wise indeed.
I have a second circular tie solution.
The logic of this solution is as follows:
If the pairing of the candidates is valid - "a good and proper thing to do".
Then it follows that adding all three pairings together should also be
valid - mathematically correct and a good and proper thing to do.
So - going back to DEMOREP1's example:
H and G H and S G and S
DEMOREP1's Pairing Pairing Pairing
Example
35 HG 35H 35H 35G
33 GS 33G 33S 33G
32 SH 32H 32S 32S
H beats G, 67 to 33 -------- ------- -------
G beats S, 68 to 32 67H 33G 35H 65S 68G 32S
S beats H, 65 to 35
Circular Tie--- H>G>S>H
Donald: When we add together the results of these three pairings we get the
following:
67 H 33 G
35 H 65 S
68 G 32 S
----- ----- -----
102 H 101 G 97 S
Again we have a winner - no circular tie. Now of course - in another
example it may be possible to have a tie between the top two - a tie that
can be solved by using Instant-Run-off - HA HA!
Donald
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