[EM] Criteria reply
6049awj02 at sneakemail.com
Sat May 21 23:41:08 PDT 2005
You might also recall that Mike's "beatpathwinner" algorithm that had
appeared at http://ElectionMethods.org was a fifth-order algorithm,
whereas it should have been third-order. I guess I share responsibility
for that little blunder because I had implemented Mike's algorithm in
Python for him. I had urged him to program and test it himself, but he
was incapable, so I did it for him. (In retrospect, it should have been
obvious to me that anyone who is incapable of programming a computer in
this day and age is unlikely to be an algorithm expert!)
As you know, I have since replaced Mike's goofy fifth-order algorithm
with your professional third-order algorithm, which I took from your
peer-reviewed paper. I note that you "copylefted" your algorithm with
the "Gnu Public License" (GPL), so I don't need to worry that you will
try to "withdraw permission" for me to use it. Mike's algorithm, on the
other hand, was given to me under the implied but unstated "Mike's
copyright," which rivals his algorithms and criteria for goofiness. It
goes something like this: "This work should be universally accepted, but
I, Mike, retain the unconditional right to deny anyone the right to use it."
Markus Schulze markus.schulze-at-alumni.tu-berlin.de |EMlist| wrote:
> Dear Mike Ossipoff,
> you wrote (18 May 2005):
>>At that time I thought that BeatpathWinner was your method, not
>>realizing at that time what "Schulze's method" actually means.
>>And, as I said yesterday, and as I said last month, in reply to
>>the same repeated statement, I, at that earlier time, carelessly
>>said that SSD is equivalent to BeatpathWinner, because it's
>>equivalent to BeatpathWinner when there are no pairwise
>>ties. When there are pairwise ties, SSD is not equivalent to
>>BeatpathWinner. CSSD is equivalent to BeatpathWinner, but SSD
>>is not. I've admitted that error last month, and yesterday,
>>but you keep repeating that quote. I knew of BeatpathWinner
>>when I and Eppley devised SSD. I at that time thought that
>>BeatpathWinner was you rmethod, because at that time I didn't
>>realiize that, as you said last month, "Schulze's method"
>>means something different. I didn't know of your CSSD
>>definition, because I hadn't read those postings, and didn't
>>know what count rule they described. At that time I mistakenly
>>believed that 'Schulze's method" meant the count rule that I
>>call "BeatpathWinner". I've only explained that about five
>>times in the last 24 hours, and at least a dozen times last
> Well, although you have been pointed to this error dozens of
> times in the last 5 years and although you have admitted this
> error several times, you keep on using this error as an argument.
> Russ Paielli proposed "Ranked Approval Voting" (RAV). Then he was
> pointed to the fact that presumably this method had already been
> proposed by Kevin Venzke. Russ Paielli immediately stopped claiming
> that he had invented RAV. Russ Paielli didn't say something like:
> "I hadn't read Kevin's proposal when I proposed RAV. Therefore,
> I can rightly claim that I invented RAV."
> On the other side, you keep on using your claim, that you hadn't
> completely understood the Schulze method when you proposed SSD,
> as an argument to claim that you "devised" SSD.
> By the way: Already in 2001, Norman Petry complained that you try to
> take credit for this method. He wrote (6 Feb 2001):
>>Regardless of what names we use when referring to these methods during
>>our committee discussions, I think it is appropriate that if one of
>>these variants is recommended to Debian that it be named SCHULZE'S
>>METHOD. This is because:
>>1. Schulze, version 1: The 'Beat-Or-Tie-path' method was first proposed by
>>Markus Schulze on Sat, 4 Oct 1997 (see EM Archives, "Re: Condorect sub-cycle
>>rule"). Unfortunately, eGroups has not archived this message, but it can
>>be found at Rob's site, in this text file (but mistakenly referred to there
>>as "Tideman's Method"): http://www.eskimo.com/~robla/em/archive/em.97q4
>>2. Schulze, version 2: The 'Schwartz Sequential Dropping' (SSD) method was
>>first proposed by Markus Schulze on Mon, 10 Aug 1998. His description can
>>be found here:
>>3. Schulze, version 3: The 'Cloneproof SSD' method was first proposed by
>>Markus Schulze on Sat, 14 Nov 1998. See:
>>http://groups.yahoo.com/group/election-methods-list/message/2291 As noted
>>above, Markus' version of 'Cloneproof SSD' uses a slightly different (and
>>imo better) tiebreaker than Mike's version, but the two methods are
>>4. Beatpath Winner: This was not specifically proposed by Markus Schulze,
>>but it is equivalent in terms of results to Cloneproof SSD. It is the
>>same as 'Beat-or-tie-path' winner, except that pairties in the matrix are
>>zeroed out before paths are computed, so that tied values cannot be part
>>of the paths used to determine the winner.
>>Since Markus was the originator of the first three of these methods, and
>>usually refers to all of them as "Schulze's Method", it seems appropriate
>>to name them as he has done.
> You wrote (17 May 2005):
>>Where did SSD come from? In individual e-mail, Steve Eppley suggested a
>>method that successively drops the weakest defeat among the smallest set
>>of candidates that is unbeaten from without. SSD is an Eppley-Ossipoff
> I wrote (17 May 2005):
>>Please forward this communication between Steve Eppley and you. I would
>>like to know why (although you considered neither independence of clones
>>nor reversal symmetry important and although Steve Eppley decided to
>>promote Tideman's ranked pairs method) you decided to promote SSD.
> You wrote (18 May 2005):
>>I don't save e-mail back to those days. But my mention of SSD on EM is
>>in the EM archives. That's really all you need.
> Well, the very first time that the term "Schwartz Sequential Dropping"
> (SSD) was being used was on 18 Feb 2000 in a mail by you. In that mail,
> you wrote that "SSD is equivalent to Schulze's method". Actually, the
> fact that "SSD is equivalent to Schulze's method" was your main argument
> for proposing SSD. Therefore, the EM archives don't support your claim
> that "SSD is an Eppley-Ossipoff method".
> You wrote (18 May 2005):
>>You ask why I decided to promote SSD. Because it's clone-independent
>>in public elections, and because it meets SFC, GSFC, WDSC, and SDSC.
> Nope. You didn't consider independence of clones important when you
> proposed SSD. Nor did you mention clones in that mail.
> You wrote (18 May 2005):
>>You seem surprised that I'd promote SSD when Steve prefers MAM.
>>Why do you expect me to copy Steve on that? Actually, Ranked-Pairs
>>has a very brief definition, if we ignore the rules for equal defeats.
>>But those equal defeat rules can't be completely left out. And RP's
>>definition, directly or indirectly, mentions cycles. So I consider
>>SSD to be a better public proposal.
>>In the matter of SSD vs RP, in terms of pure merit, in public
>>elections, RP might very well be _very slightly_ more aesthetically
>>appealing, because RP, unlike BeatpathWinner, CSSD, or SSD, never
>>lets a nullilfied defeat participate in the nullification of other
>>But I consider the merit differences between RP and SSD completely
>>negligible in public elections. That's where Steve and I disagree.
>>What's wrong with disagreeing?
> You want to know what's wrong with that? Well, on the one side
> you claim that you are having quite productive discussions with
> other people off-list. And on the other side, you neither forward
> nor save such discussions. Do you have some kind of politics
> like "discuss in a constructive manner only off-list"?
> Markus Schulze
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