Re: Debian's custom use of Condorcet and later-no-harm

2014-02-28 Thread Ian Jackson
Thue Janus Kristensen writes (Re: Debian's custom use of Condorcet and later-no-harm): I am not completely sure, but I think both ways accomplish the same thing, if you always only use the = criterium. My way seems more flexible though, since you can use it with = or , or 2/3 majority over

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-28 Thread Neil McGovern
On Fri, Feb 28, 2014 at 04:50:47PM +, Ian Jackson wrote: In my proposal, the casting voter gets to choose between A and B and there less incentive to manipulate the system by voting FD. I'm just wondering, what was the purpose behind treating FD as a special case in the first place? Could

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-28 Thread Thue Janus Kristensen
2014-02-28 17:50 GMT+01:00 Ian Jackson ijack...@chiark.greenend.org.uk: Thue Janus Kristensen writes (Re: Debian's custom use of Condorcet and later-no-harm): I am not completely sure, but I think both ways accomplish the same thing, if you always only use the = criterium. Actually, they

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-27 Thread Ian Jackson
Russ Allbery writes (Re: Debian's custom use of Condorcet and later-no-harm): This change would also fix a different problem that came up during the debate, namely one of the problems with the 2:1 majority required for a TC override. Currently, if we have a general project vote on something on

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-27 Thread Thue Janus Kristensen
I am not completely sure, but I think both ways accomplish the same thing, if you always only use the = criterium. My way seems more flexible though, since you can use it with = or , or 2/3 majority over FD requirement, and still get sane results. I also think my way is simpler, from a

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-23 Thread Thue Janus Kristensen
From that discussion ( https://lists.debian.org/debian-vote/2013/05/msg00012.html ), Michael Ossipoff mentions a similar solution for the beat default criterium problem as my suggestion, except for a different voting system: Do a rank-balloting among all of the options, with D as one of the

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-23 Thread Matthias Urlichs
Hi, Thue Janus Kristensen: I don't know enough about Michael Ossipoff's suggested complete change of voting system to have an opinion about that. It's not a complete change. The basic Condorcet method is unchanged. We merely change (fix?) what we do when there's no single winner. I have to

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-23 Thread Russ Allbery
Thue Janus Kristensen thu...@gmail.com writes: So in the init system vote example with my rule modification, D, U and FD would end up in the Schwartz set, Bdale would choose D, and the final result would then be FD, because D doesn't beat FD. So this rule change means that U cannot win

Debian's custom use of Condorcet and later-no-harm

2014-02-22 Thread Thue Janus Kristensen
There is what I consider an unnecessary problem with later-no-harm [1] in Debian's use of the Condorcet voting method in the Debian Constitution §A.6.3 [2]. The problem was visible in the recent CTTE init system vote, as noted by fx Steve Langasek [3]. Given options * systemd (D) * upstart (U) *

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-22 Thread Kurt Roeckx
On Sat, Feb 22, 2014 at 01:18:21PM +0100, Thue Janus Kristensen wrote: There is what I consider an unnecessary problem with later-no-harm [1] in Debian's use of the Condorcet voting method in the Debian Constitution §A.6.3 [2]. This also reminded me of

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-22 Thread Markus Schulze
Hallo, the Condorcet criterion and the later-no-harm criterion are incompatible. Therefore, the fact that Debian's Condorcet method violates the later-no-harm criterion doesn't come from the order of its checks. Markus Schulze -- To UNSUBSCRIBE, email to debian-vote-requ...@lists.debian.org

Re: Debian's custom use of Condorcet and later-no-harm

2014-02-22 Thread Matthias Urlichs
Hi, Markus Schulze: the Condorcet criterion and the later-no-harm criterion are incompatible. Therefore, the fact that Debian's Condorcet method violates the later-no-harm criterion doesn't come from the order of its checks. That may be so, but our method of removing choices that fail to