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  PROJECT APPROVED:Glicko2  (Read 5516 times)
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Offline Jeff

JGO Coder




Got any cats?


« Posted 2005-12-07 00:44:33 »

From Jeff: Okay, guys, I'm kind of the "godfather" of this one so I'm going to hustle it through the process unless you have strong objections, in which case hopefully I can answer them.

Glicko2 is the head-to-head competition ranking system developed and placed into open-source by professor Mark Glickman.   You can read all about it here: http://math.bu.edu/people/mg/glicko/

 It is currently the preferred ranking system of the US Chess Federation and has been adopted by many other sports and even some onlien game sites.  It is unqiue from most approaches to rankings that have come before in that it is a much mroe rigoursly mathematical approach.  It treats the rankings of the players as "statistical unknonws" and through statistical analysis of head to head wins and losses it attempts to reduce the level of "unknowness" of everyone's ratings.

Its gotten a good deal of praise for being a system that seems to "feel" much more correct then many that went before it and it solves a lot of problems in previous systems. (There's all sorts of details on that in Prof. Glickman's papers at the above link.)

The biggest practical problem with it today for use in coding projects is that, although the algorithym itself is open and fully described by Prof. Glickman, there is no open-source reference  implementation in code.

I've gotten permission from him to do an open-source implementation and they guy who is REALLY doing all the work already has an alpha done in J2SE  that passes Prof. Glickman's test cases.  (I can't call it a reference because its not "official" in that way, but we are striving to make it as correct as possible).

I am planning on using this for a project in Sun but we thought it would be a good thing to share with the community in general, ergo this project.

Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Offline Jeff

JGO Coder




Got any cats?


« Reply #1 - Posted 2005-12-07 00:45:07 »

And in a rare vote, I am +1ing this myself to start with 'cause I really believe in it

JK

Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Offline darkprophet

Senior Member




Go Go Gadget Arms


« Reply #2 - Posted 2005-12-07 01:07:45 »

+1

Sound good, and if you keep the API open, should be a good hit with players.

DP

Friends don't let friends make MMORPGs.

Blog | Volatile-Engine
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Offline tom
« Reply #3 - Posted 2005-12-07 02:06:41 »

+1

Offline Vorax

Senior Member


Projects: 1


System shutting down in 5..4..3...


« Reply #4 - Posted 2005-12-07 06:05:39 »

It would be perfect for 1vs1 tournaments in FPS games (or clan rankings of course).

+1

Offline Jeff

JGO Coder




Got any cats?


« Reply #5 - Posted 2005-12-07 19:59:47 »

Justa  side note... official name of the project as created by Derek (the actual coder  on this) Is Java Ranking System  (JRS, yes another TLA.)


Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Offline swpalmer

JGO Coder




Where's the Kaboom?


« Reply #6 - Posted 2005-12-08 02:07:41 »

+1  Very interesting

Offline Jeff

JGO Coder




Got any cats?


« Reply #7 - Posted 2005-12-11 22:58:25 »

Given the warm resposne, I am promoting this project to public space today.  Derek already has code up I'll try to do something for a front page in the next 24 hours.

Ill process the rest of these  on Monday...

Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Offline Jeff

JGO Coder




Got any cats?


« Reply #8 - Posted 2005-12-14 03:30:46 »

Project Approved

Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Offline jakz

Innocent Bystander





« Reply #9 - Posted 2006-06-10 21:58:16 »

good idea .... i get jealous why i don't have your brain.  Grin

Mini Moto World
Mini Moto
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