Talk:Round-robin voting

Is This Page Original Research?

Hi,

I am not quite sure, this warrants a page here. It is unclear how "Round-robing voting" is defined or how it is different from Tournament solution. Further, a sentence like "Round-robin methods are one of the four major categories of single-winner electoral methods, along with sequential losers (including instant-runoff voting and Baldwin's method), positional methods (including plurality and Borda), and graded methods (including score and STAR voting)." seems to not really be founded in any sources. Jannikp97 (talk) 02:53, 28 February 2024 (UTC)

This page is not original research, no. Tournament solutions are the same thing; I wasn't aware there was another page on the same subject, sorry!

You can find examples of the same class of similar terminology being used here:

https://electowiki.org/wiki/Instant-Round-Robin_Voting

https://www.equal.vote/ranked_robin

https://electowiki.org/wiki/Pairwise_preference

For the four-part classification, the families aren't completely formalized into a single list used by everyone, but similar taxonomies are widely-used. Some textbooks will describe 5 or 6 families, or define the four categories slightly differently. I believe Nicolaus Tideman's Collective Choice book has a similar taxonomy. Closed Limelike Curves (talk) 22:12, 12 March 2024 (UTC)

These three sources sadly do not strike me as reliable, and I did not find such a categorization at a quick glance in the "Collective Decisions and Voting" book by Tideman. Jannikp97 (talk) 14:03, 17 March 2024 (UTC)

Are you looking for references for the name "round-robin" or for the classification system? I'm happy to have these terms be redirects to a page called "Tournament solution." Closed Limelike Curves (talk) 01:16, 18 March 2024 (UTC)

For the classification system, just have never seen it like this before. Jannikp97 (talk) 06:44, 18 March 2024 (UTC)

Which categories are you not familiar with? Here's a reference for each of the categories individually:

1. Sequential loser elimination methods (IRV, Baldwin, IRNR)
2. Tournament solutions I assume you already know,
3. Positional voting is covered here, and
4. Rated voting is covered here.

For all of them being used simultaneously, I guess the best reference I have is the pref-voting documentation I linked, although I might be able to find something else if I went looking through enough textbooks. The exact form of these categories isn't set out in a single standard, to be clear, but all are widely used in the literature. (There are sporadic systems outside the 4 categories I've listed, and many of these categories have some overlap.) Closed Limelike Curves (talk) 17:12, 26 March 2024 (UTC)

I am familiar with all these categories, no worries.

" The exact form of these categories isn't set out in a single standard, to be clear, but all are widely used in the literature."

This is just the problem I am talking about. Phrasing it like you did in the article, makes it seem like there is a "predefined" set of four major categories, while this seems very up to debate and individual preferences. Jannikp97 (talk) 19:38, 26 March 2024 (UTC)

Ahh, in that case I don't see a problem with editing it (if you think it gives that impression). Mostly I added this line because I'm in the process of editing other voting theory articles to try and bring them closer together—I want to rearrange the articles in a way that clears up how these are all minor variations on the same theme. Once you know one defeat-dropping Condorcet method, you basically know them all. (Except Schulze. Nobody understands Schulze.) Closed Limelike Curves (talk) 20:24, 26 March 2024 (UTC)

Oh Schulze is not hard :D Schulze STV on the other hand...

I will see if I find the time, I am not too sure what to replace it with though. Jannikp97 (talk) 20:27, 26 March 2024 (UTC)

It looks like the two pages need to be merged, although your discussion in "Tournament solution" seems to be slightly broader; this page focuses specifically on application to Condorcet methods. Closed Limelike Curves (talk) 22:23, 12 March 2024 (UTC)

Hi @Closed Limelike Curves,

I am not sure merging Tournament solutions into Round Robin is the right direction, Round Robin seems to be the less standard terminology. In its current form it is quite unclear to me what Round Robin voting is even supposed to be (for instance is Borda a Round Robin method, is it a tournament solution, is it neither?). It seems like a strict subclass of C2 Functions right? Jannikp97 (talk) 07:08, 18 May 2024 (UTC)

Yep you’re right, other direction is probably better. –Sincerely, A Lime 14:48, 18 May 2024 (UTC)

OK, I'm a bit confused now, because I saw your comment that Ranked Pairs isn't a tournament solution. Is it not? I was under the impression that tournament solutions are anything that depends only on the tournament matrix. Closed Limelike Curves (talk) 00:16, 19 July 2024 (UTC)

This article is supposed to be about C2 functions. My answer to "is Borda C2" is best expressed here Closed Limelike Curves (talk) 03:02, 19 July 2024 (UTC)