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I would like to add a rating for online version of a board game. In this game there are many game rooms each normally having 3-4 people.

So I expect that player's rating adjustments (RA) should depends on

  1. Rating of opponents in the game room
  2. Number of players in game room and final place of a player
  3. Person gets rating increase if he plays more games and more frequently
  4. If a person leaves a game room (disconnect) before the game ends he should get punished with a high rating decrease

I have found two related questions in here

Developing an ELO like point system for a multiplayer gaming site

Simplest most effective way to rank and measure player skill in a multi-player environment?

Please, let me know what would be the most appropriate existing rating model to refer.

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1  
What is the question? –  Trevor Powell Dec 5 '12 at 10:46
    
@TrevorPowell, it is in bold –  Nikolay Kuznetsov Dec 5 '12 at 10:46
    
You haven't presented an issue which needs to be solved. You've stated what you want to do in the numbered list, so just do that? I guess I just don't understand what you mean by "this issue", because I don't see an issue to be solved, here. –  Trevor Powell Dec 5 '12 at 10:48
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1 Answer 1

The ELO system is used by the FIDE (World Chess Federation) as ranking systems and League of Legends is using a system based on ELO. I have used it for local long-term game tournamets. ELO is a good system. If you want penalize those who play less, you can modify the ranking every certain time to remove points and positions to those who deserve it.

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1  
WIKIPedia says it is only for games of two people. I have 3-4 in one game room –  Nikolay Kuznetsov Dec 5 '12 at 12:29
    
Think about this. You have player A, B and C. A scores 45, B 67 and C 36. Then, B gets two victories, one against A and other against C; A beats C buts loses against B (1-1); and finally, C loses against A and B. –  amusero Dec 5 '12 at 12:39
    
this makes no sense to me –  Nikolay Kuznetsov Dec 5 '12 at 12:48
    
@NikolayKuznetsov You can calculate a 3vs3 match as multiple smaller 1vs1 matches. –  API-Beast Dec 5 '12 at 13:03
    
Exactly that's what I was trying to explain. –  amusero Dec 5 '12 at 13:58
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