Comments on: The Axelrod Tournaments https://lawrules.wordpress.com/2011/09/05/the-axelrod-tournaments/ A Blog About the Law and Its Rules Tue, 19 Aug 2014 14:08:44 +0000 hourly 1 http://wordpress.com/ By: Le P2P ne meurt jamais: petite histoire d’économie expérimentale. | Economie du numérique https://lawrules.wordpress.com/2011/09/05/the-axelrod-tournaments/#comment-444 Tue, 19 Aug 2014 14:08:44 +0000 http://lawrules.wordpress.com/?p=411#comment-444 […] du principe de tit-for-tat bien connu des spécialistes du jeu du dilemme du prisonnier itéré, voir les tournois d’Axelrod,). Bittorent s’est révélé très efficace pour partager des fichiers de grandes tailles (les […]

]]> By: Robust Cooperation: A Case Study in Friendly AI Research | Machine Intelligence Research Institute https://lawrules.wordpress.com/2011/09/05/the-axelrod-tournaments/#comment-346 Sat, 01 Feb 2014 16:56:00 +0000 http://lawrules.wordpress.com/?p=411#comment-346 […] that point, inspired by Axelrod’s tournaments, we could see how a modal agents public tournament would work, and MIRI registered ModalCombat.com […]

]]> By: Randall Calvert https://lawrules.wordpress.com/2011/09/05/the-axelrod-tournaments/#comment-42 Thu, 08 Sep 2011 19:09:10 +0000 http://lawrules.wordpress.com/?p=411#comment-42 Endless fun, that Axelrod tournament!

Note that, actually, playing ALL D in an environment in which everybody else uses TFT would not result in winning the tournament. For simplicity, let’s ignore the fact that everybody gets paired once with RANDOM. Let’s use Axelrod’s parameters of 200 iterations and payoffs of 5, 3, 1, and 0, and assuming there are n players in the tournament, one who uses ALL D and the remaining n-1 using RANDOM, each TFT player would achieve a total payoff of 3 x 200 x (n-1) + 199 = 600n – 401, while the ALL D player’s total would be (5 + 199) x (n-1) + 200 = 204n – 4, which is lower for all value of n>1. What’s happening here is that two TFTs roll up huge payoffs (600) together, while ALL D “beats” TFT but achieves only a low payoff (204) in doing so.

]]> By: dguenther https://lawrules.wordpress.com/2011/09/05/the-axelrod-tournaments/#comment-41 Wed, 07 Sep 2011 23:50:09 +0000 http://lawrules.wordpress.com/?p=411#comment-41 Hi Christopher,
At first I thought your comment was just spam, but you actually have a really awesome Iterated Prisoner’s Dilemma on your website! I think it should be out there and used by lots of people, so here’s the link:

http://www.christopherxjjensen.com/research/projects/online-cooperative-resource/easy-iterated-prisoners-dilemma/

]]> By: Christopher Jensen https://lawrules.wordpress.com/2011/09/05/the-axelrod-tournaments/#comment-40 Wed, 07 Sep 2011 20:32:47 +0000 http://lawrules.wordpress.com/?p=411#comment-40 Want to play around with Axelrod’s IPD tournaments? Try the Easy-IPD flash tool.

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