Chelsea Transfer Target
Dec 5, 2011, 4:44 PM
Post #9 of 12
This is something I have investigated in my bid to improve the 'AFA Index' which is a ranking system I compile (only ever seen by me, sadly). Using the last 3 seasons' results in AFA cups I calculate a weighting for each division (similar to UEFA co-efficients). Then, league points are multiplied by the relevant weighting and wins in cup ties are also weighted likewise. So, the weighting for SAL Senior Division 1 is 0.82. All games within that division are weighted thus, while any team winning against an SAL Senior 1 team in a cup will have their win weighted the same.
However, while this works fine for measuring league results (so comparing teams in the SAL with teams in the AFC) it can be skewed in cup ties because a defeat is worth 0 no matter who it is against. Nottsborough lost to Old Ignatians on Saturday. OIFC are in the second tier of the AFC, which has a significantly lower weighting than SAL Senior 1 in which Notts play but they get the same score as if they'd lost to Winchmore Hill, one of the (other) strongest teams in the AFA.
What I came up with was deciding that the pts awarded for a win should be multiplied by the weighting (so a win in SAL Senior 1 would be 2.42 points) and a draw would always be 2 points less and a win 1 less than that. That way, a defeat in SAL Senior 1 would be -0.58 points while Nottsborough's result on Saturday would have got them (assuming AFC Senior 1 is worth 0.69 - I can't actually remember) would be worth -0.93.
I have yet to calculate the Index using this latest system though.
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