[EM] CVD wants Alt.V to be fairer but it isn't: misleading website

Markus Schulze markus.schulze at alumni.tu-berlin.de
Thu Dec 19 02:10:04 PST 2002


Dear Craig,

you wrote (19 Dec 2002):
> Is that all that is possible here ? -- for years you were writing on
> and around some  of "independence of clones" thing, seemingly without
> ever giving a definition. Finally it all ends up now with a withholding
> without any comment on why that might be. Is there anything else you
> do not want to place on the records for historians that read this
> list.

I wrote (28 Aug 1998):
> Definition ("clones"):
>
>   A[1],...,A[m] are a set of m clones if & only if the following
>   two statements are valid:
>
>   (1) For every pair (A[i],A[j]) of two candidates of this set,
>
>       for every voter V, and
>
>       for every candidate C outside this set
>
>       the following two statements are valid:
>
>       (a) V strictly prefers A[i] to C,
>           if & only if V strictly prefers A[j] to C.
>       (b) V strictly prefers C to A[i],
>           if & only if V strictly prefers C to A[j].
>
>   (2) For every candidate A[k] of this set and
>       for every candidate D outside this set
>       there is at least one voter W, who either
>       strictly prefers A[k] to D or strictly prefers D to A[k].

An election method violates "Independence from Clones" when there are
situations where you can increase or decrease the probability that a
given candidate is elected by introducing additional clones to a set
of clones to which this candidate doesn't belong.

******

You wrote (19 Dec 2002):
> I suppose we have made some sort of progress since Mr Schulze has
> now nearly eradicated the public possibility that he understands
> what proportionality is.
>
> Lets have a look at that more closely: this was written:
>
>      "proportionality is only defined for single-winner elections"

Nope, I wrote (19 Dec 2002): "'Proportionality' has been defined
only for multi-winner elections."

Markus Schulze

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