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#12256: "ELO calculation: Joint placements results. "

implemented: 此建議已獲實施

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#	Status	Votes	Game	Type	Title	Last update

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2019年Apr11日 01:21 • RicardoRix • 此建議尚未被開發者分析過:

boardgamearena.com/#!forum/viewtopic.php?f=9&t=13526

Just one example:
en.boardgamearena.com/#!table?table=50096598

2019年Apr12日 01:04 • Ossido • 此建議尚未被開發者分析過:

It seems to me that the issue is more related to the implementation of "team games" than to "joint placements". The algorithm shouldn't match you against members of your own team, when updating the elo score.

2019年Apr12日 09:39 • RicardoRix • 此建議尚未被開發者分析過:

@Ossido
the same is true for Lewis & Clark where every loser comes joint 2nd.

2019年Apr14日 14:20 • Yack_san • 此建議尚未被開發者分析過:

For Not Alone - how about each survivor(player) would be individually compared with Player Creature and gain/lose ELO accordingly?

2019年Apr15日 00:40 • LiorG • 此建議尚未被開發者分析過:

Relevant also for 2v2 innovation game.

2019年Apr28日 08:02 • DandyDan • 此建議尚未被開發者分析過:

Not Alone game.

Basically, independent of the game outcome, you have a tie with all players in human team, and your score will be adjusted on a value based on ELO difference.

If you have players with higher ELO (and probability of victory is higher) you get a boost to your ELO, if you have players with lower ELO (and probability of victory is lower) you get a drop of your ELO.
This is totally weird.

imgur.com/Nj1pldz

2019年May1日 23:32 • Stefanek • 此建議尚未被開發者分析過:

I lose ELO in Notalone too.

imgur.com/a/415VCdV

2019年May23日 19:36 • diamant • 此建議尚未被開發者分析過:

ELO calculation, if enabled, is the result of competition between 2 players. There are as many ELO calculations as there were competitions between 2 players in a game.

The bug is that some ELO calculations occur in the absence of any competition between players. It occurs mainly in 2 typical cases :

1) games ending normally, but for games with only one winner, all other players being losers. If the losers cannot be ranked, due to lack of score, you cannot pretend there were competitions between losers, and that these players finished in a tie. Only ELO calculations between the winner and each loser are justified, the other ones are inappropriate.

2) games interrupted due to the departure of a player. It is in a way the opposite of the previous situation: the result is one loser, all other players are winners, and winners are not ranked, following the rules of this website. As in the previous case, only ELO calculations between the loser and each winner are justified, the other ones are inappropriate.

2019年May29日 12:15 • surtzu • 此建議尚未被開發者分析過:

This same problems occurs in Werewolves when citizens win. It results in a tie of several players, and usually the highest ranked citizen players lose points while having won.

2019年Jun14日 16:07 • Sourisdudesert • 此建議已獲實施:

Hello everyone,

We finally found the good way to implement this.

It concerns only games where the winners win as a team, and losers lose as a team. These games are easy to spot: they are the one where the "1st / 2nd / 3rd" are replaced by "Winners / Losers" in the table results. Examples: Werewolves, Not alone, Coup city state.

For these games, you cannot win ELO if you are a "loser", and you cannot lose ELO if you are a "winner".

Thanks for suggesting this.

2019年Dec10日 23:27 • RicardoRix • 此建議已獲實施:

This still doesn't seem right:

There is no reason I (RicardoRix) should gain ELO:
and also Savilov shouldn't be losing ELO to anyone other than Jai:

boardgamearena.com/table?table=60814597

2021年May29日 23:55 • BrenBarn • 此建議已獲實施:

The issue is not just about "losing ELO". The issue is that ELO ratings of team members should not be considered at all in updating a player's ELO ratings. If players A and B are on a team against player C, and the team wins, player A won vs C, player B won vs C, and player C lost vs the others. Players A and B are not competing and their relative ELO ratings should not be considered at all.

2021年Jun8日 12:42 • Serilo • 此建議已獲實施:

Indeed, if you have a less experienced player in your team - ESPECIALLY if you play Arena, this can happen, then you get punished twice: It is actually more difficult to win due to the less experienced player being in your team AND you lose more if you lose and win less if you win. Doesn't look right...

2021年Jun9日 01:55 • KongKing123 • 此建議已獲實施:

This (popular) issue has been raised here: boardgamearena.com/bug?id=11297

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#12256: "ELO calculation: Joint placements results. "

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