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ill_be_there
ill_be_there
Posts: 1,008
04:49 Thu 29 Mar 12 (BST)  [Link]  
willl somebody please explain the ranking system to me please?
Help Page said:

Here is the formula used to calculate the points (dif = winner's ranking - loser's ranking)

If winner's ranking is the same or better than loser's ranking

1 / 2(dif / 100)

If winner's ranking is less than loser's ranking

(2 - 2(-100 / 100))


if i am correct, then this would mean that if the winner is 50 points above the loser, then he would win half as much as if he was 100 points above the winner because the difference is more??? also for the part where it says the formula for if the loser is higher ranked than the winner, what does it mean by 2-2 (diff / 100)????


edit - got the second part of my question now, but the first formulae never works out to be correct...........
adam_147
adam_147
Posts: 8,033
05:34 Thu 29 Mar 12 (BST)  [Link]  
if winner is 100 points above loser, then (not including multipliers)

winner: +0.5
loser: -0.5

if winner is 100 points below loser, then

winner: +1.5
loser: -1.5

So the higher player should win 75% of the frames. (this is the example on the help page)

if the winner is 50 points above the loser:

winner: +0.7 (rounded to 1dp)
loser: -0.7

if the winner is 50 points below the loser:

winner: +1.3
loser: -1.3

Then the higher player should win 65% of the frames.

So no, they wouldnt be expected to win half as many, they should win 10% less.

And 2-2^(-diff/100) means divide the difference by 100 and multiply by -1, then raise to that power and then subtract from 2. Or just do the calculation for the winner and subtract that answer from 2 as:

1/2^(diff/100) = 2^(-diff/100)

Who knows why the same calculation is written differently in the 2 things .
ill_be_there
ill_be_there
Posts: 1,008
05:45 Thu 29 Mar 12 (BST)  [Link]  
lol that is confusing :P i will read it again tomorrow when i am awake, thanks for your help adam
adam_147
adam_147
Posts: 8,033
05:51 Thu 29 Mar 12 (BST)  [Link]  
The fact that I can't write proper maths on a forum makes it tricky to explain simply!
ill_be_there
ill_be_there
Posts: 1,008
07:00 Thu 29 Mar 12 (BST)  [Link]  
hahahah
Deleted User
(IP Logged)
14:20 Thu 29 Mar 12 (BST)  [Link]  
I dont get it either But that's because i'm a zombie
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Ranking system

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