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Topic: Cloneproof Schwartz Sequential Dropping

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	A Survey of Basic Voting Methods
		Sequential dropping may be the reasonably good base method that is easiest to define and explain.
		Next it drops the weakest defeat, that is, it replaces the weakest defeat with a pairwise tie.
		CSSD proceeds by dropping the weakest defeat, which is T’s 7-5 defeat over R. Now the new Schwartz set consists only of A and R, as both are minimal undominated sets in themselves.
	fc.antioch.edu /~james_green-armytage/vm/survey.htm (6352 words)

	Cloneproof Schwartz Sequential Dropping - InformationBlast
		Cloneproof Schwartz Sequential Dropping (CSSD) is a voting method developed by Markus Schulze that selects a single winner using votes that express preferences.
		CSSD is also known as "Schwartz Sequential Dropping", "Beatpath Method", "Beatpath Winner", "Path Voting", "Path Winner", and "Schulze Method".
		CSSD uses Condorocet pairwise matchups between the candidates and a winner is chosen in each of the matchups.
	www.informationblast.com /Cloneproof_Schwartz_Sequential_Dropping.html (613 words)

	Condorcet method - Wikipedia, the free encyclopedia
		Cloneproof : a method that is immune to the presence of clones (candidates which are essentially identical to each other).
		If no defeats exist among the Schwartz set, then its members are the winners (plural only in the case of a tie, which must be resolved by another method).
		Otherwise, drop the weakest defeat information among the Schwartz set (i.e., where the number of votes favoring the defeat is the smallest).
	www.wikipedia.com /wiki/Condorcets_Method (2143 words)

	Encyclopedia: Cloneproof Schwartz Sequential Dropping
		Cloneproof Schwartz Sequential Dropping ( CSSD) is a voting system developed in 1997 by Markus Schulze that selects a single winner using votes that express preferences.
		The definition of a Schwartz set, as used in CSSD, is as follows: The Schwartz set is a term used in regard to voting systems.
		Furthermore, the fact that CSSD is a part of Debian's voting software ("Debian Vote Engine", Devotee) means that it is the standard voting system in all Debian user groups (DUGs).
	www.nationmaster.com /encyclopedia/Cloneproof-Schwartz-Sequential-Dropping (2014 words)

	Cloneproof Schwartz sequential dropping - Result for Cloneproof Schwartz sequential dropping - Meaning of Cloneproof ...
		CSSD uses Condorcet method Condorcet pairwise matchups between the candidates and a winner is chosen in each of the matchups.
		CSSD then says to drop the weakest defeat, so we drop C > A and are left with * A > B 72% (as C has been removed) Therefore, A is the winner.
		A table in Voting_system#Criteria_in_evaluating_voting_systems says CSSD complies with the Strategy-Free criterion, does not comply with the Participation criterion, and it is unknown whether it complies with the Favorite Betrayal criterion.
	www.mauspfeil.net /Cloneproof_Schwartz_Sequential_Dropping.html (1405 words)

	Summability criterion - Iridis Encyclopedia (Site not responding. Last check: 2007-09-15)
		Majority Choice Approval, Cloneproof Schwartz Sequential Dropping, Approval voting, Cardinal Ratings, Borda count, and Plurality voting all comply.
		In Cloneproof Schwartz Sequential Dropping, each vote is equivalent to a two-dimensional array referred to as a pairwise matrix.
		In an IRV election, the voting data cannot be "compressed" by adding the vote totals together at each level, so verification of the tally results becomes nearly impossible.
	www.iridis.com /Summability_criterion (793 words)

	Condorcet method (Site not responding. Last check: 2007-09-15)
		The "cloneproof Schwartz Sequential Dropping" (CSSD) method resolves votes as follows: # First, determine the Schwartz set (the innermost unbeaten set).
		# Otherwise, drop the weakest defeat information among the Schwartz set (i.e., where the number of votes favoring the defeat is the smallest).
		Organizations which currently use some variant of the Condorcet method are: # The Debian project uses Cloneproof Schwartz Sequential Dropping.
	www.serebella.com /encyclopedia/article-Condorcet_method.html (1936 words)

	Schulze method - Wikipedia, the free encyclopedia
		The Schulze method is also known as "Cloneproof Schwartz Sequential Dropping" (CSSD), "Schwartz Sequential Dropping" (SSD), "Beatpath Method", "Beatpath Winner", "Path Voting", and "Path Winner".
		Note that this is different from some other preference voting systems such as Borda and Instant-runoff voting, which do not satisfy the Condorcet criterion and guarantee that the Condorcet winner will win in these systems.
		The definition of a Schwartz set, as used in the Schulze method, is as follows:
	en.wikipedia.org /wiki/Cloneproof_Schwartz_Sequential_Dropping (1196 words)

	[EM] Criteria reply
		In your 18 Feb 2000 mail, the term "Schwartz Sequential Dropping" (SSD) was used for the very first time.
		'Sequential Dropping' (SD) could unnecessarily solve a bottom cycle, which is why I said that it's less elegant than Schulze." Therefore, the EM archives clearly state (1) that you knew my method when you proposed SSD and (2) that you knew that SSD _is_ my method.
		Therefore, I claim that the sole purpose of your theory, that the underlying heuristic is a part of a method, is your hopeless attempt to claim that you "devised" a new method.
	lists.electorama.com /pipermail/election-methods-electorama.com/2005-May/016004.html (1115 words)

	Re: Nov 19 draft of voting amendment
		We determine possible > winning options by constructing a Schwartz set; we then drop the weakest > defeats from the Schwartz set until there are no more defeats in the > Schwartz set.
		I'm not comfortable with this because there is not just one schwartz set but a sequence of them.
		So it's possible that an option could appear in a later schwartz set through an interpretation where only the most recent schwartz set is considered when deciding which defeats are currently dropped.
	lists.debian.org /debian-vote/2002/11/msg00219.html (384 words)

	Condorcet Rules: Six Variations (Site not responding. Last check: 2007-09-15)
		Sequential Dropping (SD) is the next simplest variation of Condorcet voting.
		Drop the weakest defeat among the candidates of that set.
		CSSD is the same as SSD, except for the stopping rule.
	electionmethods.org /Condorcet-3.html (1124 words)

	Cloneproof Schwartz Sequential Dropping
		CSSD uses Condorcet pairwise matchups between the candidates and a winner is chosen in each of the matchups.
		Accurate Democracy where CSSD is called "Schulze", "Schwartz Sequential Dropping", and "Beatpath"
		Voting methods resource page where CSSD is also called "Schwartz Sequential Dropping" and "Beatpath"
	www.sciencedaily.com /encyclopedia/cloneproof_schwartz_sequential_dropping (767 words)

	monotonicity criterion (Site not responding. Last check: 2007-09-15)
		Furthermore, although all voting systems are vulnerable to tactical voting, systems which fail the monotonicity criterion suffer an unusual form, where voters might try to elect their candidate by voting against that candidate.
		The Borda count and Cloneproof Schwartz Sequential Dropping are monotonic, while Coombs' method and Instant-runoff voting are not.
		Approval voting is monotonic, using a slightly different definition, because it is not a preferential system: you can never help a candidate by not voting for them.
	www.yourencyclopedia.net /Monotonicity_criterion.html (271 words)

	condorcet method (Site not responding. Last check: 2007-09-15)
		Schwartz set : the union of all possible sets of candidates such that for every set:
		First, determine the Schwartz set (the innermost unbeaten set).
		The Debian project uses Cloneproof Schwartz Sequential Dropping.
	www.yourencyclopedia.net /condorcet_method.html (1731 words)

	[cctld-discuss] [election process and methods] (Site not responding. Last check: 2007-09-15)
		CSSD and BeatpathWinner always choose the same winner, which is why I say that they're equivalent.
		It consists of repeatedly dropping the weakest defeat among the Schwartz set candidates, till there are no defeats among the Schwartz set (That's usually because the Schwartz set by that time consists of only one candidate).
		So we repeatedly drop the weakest defeat among those candidates, till there are no defeats among that set.
	cosmos.kaist.ac.kr /wwtld-mails/current/msg04856.html (1936 words)

	Strategy-Free criterion - Electowiki
		Cloneproof Schwartz Sequential Dropping was shown to comply with both the Condorcet and Generalized Condorcet Criteria (CC and GCC) above.
		Although compliance with CC and GCC are important, those criteria apply only in the theoretically ideal case in which all votes are sincere.
		The fact that Cloneproof Schwartz Sequential Dropping also complies with SFC therefore enhances the significance of CC and GCC considerably.
	wiki.electorama.com /wiki/Strategy-Free_criterion (581 words)

	CONDORCET'S METHOD for Single-Winner elections
		Drop the weakest defeat that's in a cycle.
		Drop the weakest defeat among the members of the current Schwartz set.
		If A beats B when the pairwise preferences are tallied, and we drop that defeat, we're overruling the voters who voted A over B. We can't overrule the voters who voted B over A. They were already overruled by the count of pairwise votes, which the A-beats-B voters won.
	www.barnsdle.demon.co.uk /vote/condor2.html (2609 words)

	Condorcet method - Iridis Encyclopedia (Site not responding. Last check: 2007-09-15)
		The " cloneproof Schwartz Sequential Dropping " (CSSD) method resolves votes as follows:
		The Software in the Public Interest project uses Cloneproof Schwartz Sequential Dropping.
		The UserLinux project uses Cloneproof Schwartz Sequential Dropping.
	www.iridis.com /Condorcet_method (1746 words)

	CIVS completion algorithms
		The top-ranked choices are the initial Schwartz set: the smallest set of choices such that no choices outside the set are preferred to any in the set.
		After these choices are removed from the graph, the second tier of choices are the Schwartz set in the new graph, and so on.
		In this case, the choices within that Schwartz set are ranked based on the strength of the strongest preference against that choice.
	www.cs.cornell.edu /w8/~andru/civs/rp.html (1476 words)

	New electoral system: (Site not responding. Last check: 2007-09-15)
		One method of resolving an ambiguity is to consider the ‘Schwartz set’, which is the innermost set of candidates for which none inside the set is beaten by any candidate outside of the set.
		It is then a matter of eliminating the weakest defeat (the smallest majority by which a defeat occurs) and recalculating the Schwartz set until a single winner remains.
		These are designed to decrease the number of candidates standing, increase voter knowledge about each candidate and restrict the field to candidates who actually want to win and try hard to do so, regardless of their perceived chances.
	johnquiggin.com /wp-content/Condorcet.htm (1532 words)

	Cloneproof-schwartz-sequential-dropping software downloads (Site not responding. Last check: 2007-09-15)
		15 ( Fifteen) is a sequential movement puzzle made up of 15 consecutively numbered sliding blocks, all placed in a square tray large enough to hold 16 blocks.
		Music note s are dropping from the treble clef at the top of your screen.
		Using your keyboard's left and right arrow keys, your objective is to steer each note so it lands on its name at the bottom of the screen.
	www.freedownloadsoft.com /cloneproof-schwartz-sequential-dropping.html (538 words)

	[Nomic] Name (Site not responding. Last check: 2007-09-15)
		There's also Bucklin voting, which is similar to what you describe but not really the same thing at all.
		http://en.wikipedia.org/wiki/Voting_methods http://en.wikipedia.org/wiki/Bucklin_voting IHNTA, IJLS "Cloneproof Schwartz Sequential Dropping".
		Maud Image (Michael Slone) [I]t shall not be considered rude to insinuate that the un-motivated Agoran people eat low-quality feta while thousands of starving Walruses dine on the finest, imported Greek feta that Marks can buy.
	mailman1.u.washington.edu /pipermail/nomic/2005-May/000426.html (221 words)

	Condorcet method -- Facts, Info, and Encyclopedia article
		The (Click link for more info and facts about Debian) Debian project uses a modified version of (Click link for more info and facts about Cloneproof Schwartz Sequential Dropping) Cloneproof Schwartz Sequential Dropping for internal referendums and to elect its leader.
		The (Click link for more info and facts about Software in the Public Interest) Software in the Public Interest corporation uses (Click link for more info and facts about Cloneproof Schwartz Sequential Dropping) Cloneproof Schwartz Sequential Dropping to elect members of its board of directors.
		The (Click link for more info and facts about UserLinux) UserLinux project uses (Click link for more info and facts about Cloneproof Schwartz Sequential Dropping) Cloneproof Schwartz Sequential Dropping.
	www.absoluteastronomy.com /encyclopedia/C/Co/Condorcet_method.htm (2374 words)

	cola@nllgg.nl archief: Preference ballot tabulation: Condorcet with Dual Dropping 6.0 (Site not responding. Last check: 2007-09-15)
		Condorcet with Dual Dropping Perl scripts release 6.0 http://condorcet-dd.sourceforge.net/ http://sourceforge.net/projects/condorcet-dd/ http://freshmeat.net/projects/condorcet_dd/?topic_id =234 A vote tabulation and ranking system for deciding single or multi-winner contests (elections) using preference or approval ballots.
		Dual Dropping will compute the Cloneproof Schwartz Sequential Dropping (CSSD) and Tideman's Ranked Pair (RP) results for each contest round and select the combined SSD and RP contest outcome with the lowest overall dropping cost.
		It has options to compute just the CSSD or RP outcome, various optional tie-breakers, and alternative measures of dropping cost (winning votes and/or margin).
	mail.nllgg.nl /cola/2004-06/25.html (214 words)

	Re: Hybrid Theory
		This may be clear (is it?) but I think that some of the previous drafts did not have this property.
		Condorcet voting with Cloneproof Schwartz sequential dropping additionally has the "cloneproof" property (from http://electionmethods.org/CondorcetEx.htm) * The Schwartz Sequential Dropping (SSD) method has a ``plain'' version and the ``cloneproof'' version.
		The cloneproof version gives no group or party any advantage or disadvantage for having additional candidates that are essentially ``clones'' of each other.
	lists.debian.org /debian-vote/2002/12/msg00042.html (607 words)

	CIVS completion algorithms
		The top-ranked choices are the initial Schwartz set: the smallest set of choices such that no choices outside the set are preferred to any in the set.
		Typically, the Schwartz set consists of a single choice at every level; ties can only occur if there are preferences of equal strength.
		In this case, the choices within that Schwartz set are ranked based on the strength of the strongest preference against that choice.
	www5.cs.cornell.edu /~andru/civs/rp.html (889 words)

	freshmeat.net: Project details for Condorcet with Dual Dropping
		Condorcet with Dual Dropping is a ranking system for deciding single or multi-winner contests (elections) using voted preference (or approval) ballot list or pairwise tally matrix.
		It computes the Cloneproof Schwartz Sequential Dropping (CSSD) and Tideman's Ranked Pair (RP) results for each contest round, and selects the combined CSSD and RP outcome with the lowest overall dropping cost.
		There are options to compute just the CSSD, RP, or Minimum Dropping Cost outcome, various optional pair rank and winner tie-breakers, and alternative measures of dropping cost (winning votes and/or margin).
	freshmeat.net /projects/condorcet_dd (215 words)

	Cloneproof Schwartz Sequential Dropping - Wikipedia
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	de.wikipedia.org /wiki/Cloneproof_Schwartz_Sequential_Dropping (145 words)

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