#115682: "Elo calculation with losers_not_ranked is wrong"
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Detailed description
-
• Please copy/paste the error message you see on your screen, if applicable.
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". -
• Please explain what you wanted to do, what you did and what happened
-
• Which browser are you using?
Google Chrome v122
-
• Please copy/paste the text displayed in English instead of your language. If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". -
• Is this text available in the translation system? If yes, has it been translated for more than 24 hours?
-
• Which browser are you using?
Google Chrome v122
-
• Please explain your suggestion precisely and concisely so that it's as easy as possible to understand what you mean.
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". • Which browser are you using?
Google Chrome v122
-
• What was displayed on the screen when you were blocked (Blank screen? Part of the game interface? Error message?)
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". • Which browser are you using?
Google Chrome v122
-
• Which part of the rules was not followed by the BGA adaptation?
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". -
• Is the rules violation visible on game replay? If yes, at which move number?
-
• Which browser are you using?
Google Chrome v122
-
• What was the game action you wanted to do?
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". -
• What did you try to do to trigger this game action?
-
-
• What happened when you tried to do this (error message, game status bar message, ...)?
• Which browser are you using?
Google Chrome v122
-
• At which step of the game did the problem occur? What was the current game instruction?
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". -
• What happened when you tried to do this game action (error message, game status bar message, ...)?
-
• Which browser are you using?
Google Chrome v122
-
• Please describe the display issue. If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". • Which browser are you using?
Google Chrome v122
-
• Please copy/paste the text displayed in English instead of your language. If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". -
• Is this text available in the translation system? If yes, has it been translated for more than 24 hours?
-
• Which browser are you using?
Google Chrome v122
-
• Please explain your suggestion precisely and concisely so that it's as easy as possible to understand what you mean.
This setting does not have the intended effect with regards to Elo calculation.
en.doc.boardgamearena.com/Main_game_logic:_yourgamename.game.php#Only_%22winners%22_and_%22losers%22
en.doc.boardgamearena.com/Game_meta-information:_gameinfos.inc.php#Losers_not_ranked_between_themselves
Coup is used as the example in the docs, so let's use that. Here is a random, recent Coup table: boardgamearena.com/table?table=478182531
I realized that the detailed Elo caluclations are unavailable from Game result pages eventually so here are images saved: imgur.com/a/5WPXjTR
When summing up all Elo exchanges that would otherwise have happened, Victor Araujo should end up with a net positive, since they were the lowest Elo at the table and they tied with several other players with higher Elo. However, the losers_not_ranked setting sets his Elo change to +0, with the (very misleading) message "You cannot win ELO from teammates on a loss" (the other losers are not his teammates).
OK, so far you might think this is the exact intent of the losers_not_ranked setting, as the docs say, "When calculating ELO points, if there is at least one "Loser", no "victorious" player can lose ELO points, and no "losing" player can win ELO point."
But, now look at the Elo breakdown for Cheddar C. **Cheddar C loses 2.41 Elo for tying with Victor Araujo.** And yet, Victor Araujo was not able to gain any Elo on the other side of that exchange.
This is what does not make any sense. The way it is implemented, the losers lose "too much" Elo in total, they lose points that are not transferred to anyone else. Every time you play a game of Coup and is not the winner, you lose Elo to the other losers with lower Elo than you, but some of that Elo "disappears" and is not awarded to them. Games with this setting enabled will be intrinsically lower on Elo among the player pool than regular ranked games, which surely is not the intention?
Proposed fix:
If losers_not_ranked = true, each Winner should exchange Elo only with each Loser. No other player pairs should exchange Elo - Winners should not exchange Elo with other winners and losers should not exchange Elo with other losers. These should not be summed up and then capped, they should not be part of the sum to begin with.
This would preserve the intention of the setting - winners cannot net lose Elo and losers gannot net gain Elo. But it would do so in a more intuitive and expected way, that does not make extra Elo "disappear". • Which browser are you using?
Google Chrome v122
Report history
Your bug has probably been fixed already, or was linked to a temporary failure of BGA service.
In any case, when filling a bug report, make sure to have an explicit title linked to the incident (ex: with error message), so other players can recognize it and vote for it.
Add to this report
- Another table ID / move ID
- Did F5 solve the problem?
- Did the problem appear several times? Every time? Randomly?
- If you have a screenshot of this bug (good practice), you can use Imgur.com to upload it and copy/paste the link here.
