Conquer Club

xroads wrote:What is the weight and how is it calculated?

IcePack wrote:

iAmCaffeine wrote:Is this the lowest ID has ever been?

Probably, previously their lowest was 922 rating tho the rankings vary slightly so without running the F400 impossible to tell.

iAmCaffeine wrote:Is this the lowest ID has ever been?

Keefie wrote:All the image links are broken.

show

IcePack wrote:So you are entering each CL set as its own of 8, and not a combined 16? No more minimum 12 game sets?
How will that impact RL, are you going to do 6 game sets?

IcePack wrote:So you are entering each CL set as its own of 8, and not a combined 16? No more minimum 12 game sets and balanced results of home & away games?
How will that impact RL, are you going to do 6 game sets?

rockfist wrote:Thanks Don!

OSA ahead of Fallen and FOED? Wow...not saying OSA is bad but Fallen has beaten us and FOED personally gives me fits.

benga wrote:

rockfist wrote:Thanks Don!

OSA ahead of Fallen and FOED? Wow...not saying OSA is bad but Fallen has beaten us and FOED personally gives me fits.

Since we have double the weight, our rank is more accurate than TOFUs.

Donelladan wrote:The calculation I can give it to you; but I don't think you can do it without a program, so unless you know how to program you can't do it.
I have been talking to bigWham to see if we could implement it directly to the website.
It is ongoing. We'll see.

Here is the way it works.


So every clan start with a value of 1000. This isn't their score, it's their worth as opponent.

A clan score is the sum for each war of its performance, multiplied by a weight factor, multiplied by a decay factor.
Then divided by the sum of the weight X decay factor
So it is
Clan score = Sum ( performance x weight x decay ) / Sum( weight x decay)
weight for a clan war = number of game for this war.
decay = linear value between 0 and 1.
1 for today and 0 for 2 years.

For a war, performance = score of opponent + alpha*((w-l)/abs(w-l)) + beta*(w-l)/(w+l)
w = games won l = game lost
alpha = 100 if less than 2 wars and 200 otherwise
beta = 200 if less than 2 wars and 400 otherwise

So everytime u calculate the performance of a clan, you need to know the score of the opponent clan at this time.
Which mean you need to recalculate it everytime because of the decay factor that change.


So for example let's assume clan A face clan B.
Clan A has a score of 1400
Clan B has a score of 1600
Clan A win 33 to 27
Clan A performance will be = 1600 + 200 + 400 * (33-27)/60 = 1840
Clan B performance will be = 1400 - 200 + 400*(27-33)/60 = 1160

Fewnix wrote:So now you know how one ranking for clans, D400, works, simple huh?



I am not a tech type my understanding is that, as for individual cc members who start at 1000 points and a ? New Recuit ranking unti 5 games are finished, clans start at a ? unknown ranking until some clan wars hae been completed.

Therafter you go up in points and ranking as you win wars, beating a higher ranked clan giving you more points than beating a lower ranked clan, losing to a higher ranked clan cost you less points than losing to a lower ranked clan, e.g. might only win 2 out of 5 clan wars, losing 3, but your points go up

Greater weight is given to reeently completed wars than older wars- so a clan might have had its glory days when it beat top clans regularly and was high ranked but those days are over now. Few wars in the past year, few victories, the points from old wars decay and don;t cost as much as they used to, more weight given to the recent was, the wars lost to lower ranked clans.

OR vice versa

A new reconsituted RGV will not carry the burder of early unsuccessful gamed for long, and as we beat higher ranked clans in recent CL10, the CUP and wars to come, we go up in rank.

something like that

Re: D400 - November ranking
Unread postby Donelladan on Fri Feb 08, 2019 2:38 pm
A post I made in my clan forum
Apost I made in our clan forum

Re: D400 - November ranking
Unread postby Donelladan on Fri Feb 08, 2019 2:38 pm

Huh not at all.
I simply make the sum.
I calculate the performance for each war ( from the 1st clan war recorded on CC), and store it in a table. I also store in the same line of the table the date of the war and the weight.
Then everytime I need to calculate the score of a clan at a given time, I calculate the sum for all war of weight X performance X decay factor ( that I divide by the sum of decay X weight).
The "difficult" part is that to calculate a performance for one war, I need to calculate the score of the opponent at the time of the war, since score of a clan is different every day because of the decay.
Score of a clan isn't an information that I can store.