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Thread: ELO Rating System for TWD

  1. #1
    SM Town Kim's Avatar
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    ELO Rating System for TWD

    Quote Originally Posted by Overstrand
    I worked on this for a bit with Myth and this is what we have:

    This is mainly Myth's work (obviously) Thanks Myth

    ----------------------
    Squads start off with 1000 rating points.
    When a TWD game has been played, the new rating of the squad will be determined by the following formula:

    New Rating = Old Rating + K(W-P)

    P = Probablitity of winning
    K = Maximum rating change
    W = 1 if the squad has won, W = 0 if the squad has lost


    P = 1 / (1 + 10^(-difference_in_ratings / 400))
    K = 50





    Example:
    wolvencreed (rating 1000) vs Pallies (rating 1400)



    first we'll calculate the probability of winning of wolvencreed over Pallies:
    difference_in_ratings = 1000-1400 = -400

    P = 1 / (1+10^(-(-400) / 400))
    P = 1 / (1+10^1)
    P = 1 / 11
    P = 0.09 = 9% chance of wolvencreed winning over Pallies.
    then ofcourse, the chance of Pallies winning over wolvencreed is 1-0.09 = 0.91 = 91%

    - Scenario: wolvencreed wins!
    so, for wolvencreed: W = 1
    new rating = old rating + K * (W-P)
    new rating = 1000 + 50 * (1-0.09)
    new rating = 1000 + 45.5 = 1046

    for Pallies: W = 0
    new rating = 1400 + 50 * (0-0.91) = 1400 + (-45.5) = 1354.5 = 1355



    -

    K (maximum rating change) is set to 50 in this example. We're considering to lower K when a squad plays more games.
    This is info concerning calculating the rating points for TWD. The quote was taken from an ancient post by Overstrand, and Guano thought it would be a good idea to sticky this, because enough people question about it every so often. So instead of staffers giving you a half-assed answer about it all, you can check it out here, if you didn't already know how the rating system works.

    This is also a great way to maximize the points your squad can earn, whilst comparing the amount of points that can be lost to any given squad.
    ♪♫♪♫♪♫♪♫♪♫♪♫
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    .
    

  2. #2
    N.E.R.D. DOTSY's Avatar
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    you used the word ass ! omg omg

    great idea btw, very nice !

    good work again
    Code:
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    1:Pred_FNM <ER>> i dont mean in clothes, in forums..
    1:lnx> kk
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  3. #3
    Bitch, please. Pat B's Avatar
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    Tu me pisse la raie!

  4. #4
    SM Town Kim's Avatar
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    Wax that post by Overstrand was made in 2002. The system has not changed since.
    ♪♫♪♫♪♫♪♫♪♫♪♫
    Failure teaches success.
    .
    

  5. #5
    A Love Extreme Vykromond's Avatar
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    ...electric light orchestra?

  6. #6
    Registered User
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    lol wax, way to go bro
    Quote Originally Posted by Kolar
    My reaction:

    ;1;Holy Shit
    ;1;Al Qaeda took care of method for us

  7. #7
    Registered User colony's Avatar
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    cool system. Thanks for posting the 'source'.
    audit> and btw, im your fan!

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  8. #8
    Jules-man Anduril.'s Avatar
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    Too difficult .. can't understand it
    If it's about food, pm me in the game.
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  9. #9
    House Targaryen Claushouse's Avatar
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    Thumbs up

    great dig, Kim!
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  10. #10
    ELMO TIME Rigor's Avatar
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    BAM

  11. #11
    a German Baser HildoZ's Avatar
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    TWD Calculator - Website

    hey hey ....

    Last season I wrote a php-script to calculate the matches
    (for those who can't calculated that by hand :P or head )

    With the start of the new TWD-WebSite and TWSD I fixed some stuff
    and added a SD-Calculator.

    For now it's just a nice tool to play with for you,
    but if ya battle for points close to the start of next TWL it might become useful ... :whistling:

    here's the Link, notify me if it doesnt work ....TWD - Calculators

    I fixed the missing Squads, if ya still find bugs mail me ....

    HildoZ
    Last edited by HildoZ; 07-13-2005 at 02:01 PM.

    1:Apocalypse WOW!> i don't know, the immaturity level in this game really grates on me
    1:HildoZ> rephrase this easier plz ...
    1:Apocalypse WOW!> the dumb little kids really annoy me

  12. #12
    LoRd B Barton's Avatar
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    Greetings Hildoz

    i cant find my squadron on the dd list

    3 Value 1419

    it would be nice if u fix that bug!

    thank you.
    SSCU Trench Wars Local BanG Operator
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    1:Rudy> We don't let Barton out much
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  13. #13
    Registered User Asmodeus's Avatar
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    some squads are missing

  14. #14
    What is this game? Edify's Avatar
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    that's a neat calculator. when i saw this thread in new posts i was going to ask if there was a calculator. gj!
    thread killer
    :oldsmile: :confused: :bigups:

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