X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=www%2Findex.xml;h=a1b248801d018078b2a3781487ece48278778770;hb=1b1cf9d60369578fecd0cad0c2fed7b91d08f073;hp=8c63fb2e6dc88e0e56907f330fc61dd0fcabd6b8;hpb=06cba344416a52f77d2db5d3040654d0b62998df;p=foosball diff --git a/www/index.xml b/www/index.xml index 8c63fb2..a1b2488 100644 --- a/www/index.xml +++ b/www/index.xml @@ -6,149 +6,210 @@ Foosball! + -

Foosball!

...on a clear day, you can play foosball forever

Add a singles result

User name 1
User name 2
Score	- - - -

- +

+ + + + + + + + + + + + + + + + +

Player 1:
Player 2:
Score:	+ – + +

Add a doubles result

- - - - - - - - - - - - - - - - -

Team 1 (usernames)	- and - -
Team 2 (usernames)	- and - -
Score	- - - -

+ + + + + + + + + + + + + + + + +

Team 1:	+ and + +
Team 2:	+ and + +
Score:	+ – + +

+ +

Assess a singles match

+ + +

+ +

Assess a doubles match

Singles score board

+ + + + + + + + + + + + +

Team 1:	+ and + +
Team 2:	+ and + +

- - - - - - - - - - - - - - - - - - - -

Username	Rating mean	Rating deviation	Conservative estimate	Change since yesterday

Singles score board

Doubles score board

+ + + + + + + + + + + + + + + + + + + +

Username	Rating	RD	Bound	Change

- - - - - - - - - - - - - - - - - - - -

Username	Rating mean	Rating deviation	Conservative estimate	Change since yesterday

Doubles score board

Last ten games

+ + + + + + + + + + + + + + + + + + + +

Username	Rating	RD	Bound	Change

- - - - - - - - - - - - - - - - - - -

Registered	Type	Opponents		Score
				–

Last ten games

About the ratings

+ + + + + + + + + + + + + + + + + + + + + +

Registered	Type	Opponents		Score	Rating diff.
				–

+ +

About the ratings

The rating system in use is called FoosRank, and is specially - designed for this system. It is a Bayesian rating system, inspired by - Glicko 1 but re-worked out from scratch with a statistically sound model - of non-binary results, and adjusted for teams (with some ideas from - Microsoft's TrueSkill system). For those not familiar with Bayesian - ratings, the most important parts are:

+ designed for this site. It is a Bayesian rating system, inspired by + Glicko but re-worked + out from scratch with a statistically sound model of non-binary results, + and adjusted for teams (with some ideas from Microsoft's TrueSkill + system). For those not familiar with Bayesian ratings, the most important + parts are:

Your rating is a statistical estimation of your true skill. It has a mean (the point estimate of your skill) and a deviation (measuring the uncertainity of the estimate), called the RD. It is approximately - Gaussian (actually logistic).
When you win or lose a game, your rating will change accordingly, based on your score and your opponent. You do not get 'points' for winning or losing, the estimate is merely getting more accurate. @@ -165,6 +226,11 @@ you are ranked as an individual, as we do not usually play with fixed teams.

+ +

For the more technically minded, a + very rough writeup + on the mathematics behind FoosRank is available in PDF format. It is, + however, by no means finished.