[EM] Directional Resistance
Michael Poole
mdpoole at troilus.org
Wed Mar 21 20:08:50 PDT 2007
Forest W Simmons writes:
> Has anybody explored this idea?
>
> Make an electrical circuit with a terminal for each candidate.
>
> For each pair of terminals attach a diode that has a different
> resistance in each direction: the resistance in the direction from
> candidate i to candidate j is proportional to the number of ballots on
> which candidate j is ranked above candidate i.
>
> After all of the diodes are attached measure the circuit resistance
> between terminals i and j.
>
> The candidate X against whom the maximal resistance is minimal is the
> winner.
I do not understand the analogy to electrical circuits.
1) Diodes do not have an impedance that is easily characterized by a
single number. Roughly, they conduct a lot of forward current if the
forward voltage is above a certain value, and have a (negative)
breakdown voltage beyond which they allow current to flow easily in
the reverse direction.
2) If there are independent paths between point X and Y in a circuit
(that is, the endpoints are the only places that any path intersects
with any other path), the impedance from X to Y is the geometric mean
of the impedances of each path. I do not understand why this would be
desirable for defeat paths.
3) Related to #2, impedance is measured between two points. When you
say "candidate X against whom the maximal resistance is minimal", what
is the other point of reference for measuring resistance?
What properties of a resistive network were you trying to capture?
Michael Poole.
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