Topic-icon new pokerth ranking by Rezos

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17 Jun 2018 19:02 - 21 Jun 2018 21:50 #40883 by 98s
98s created the topic: new pokerth ranking by Rezos
Hello,
I have a proposal for calculating pokerth ranking.

At this point the ranking is calculated as follows:

1. Placement Points:
1. = 15 | 2. = 9 | 3. = 6 | 4. = 4 | 5. = 3 | 6. = 2 | 7. = 1

2. Formula:
25*(total points)/(10+games)


I suggest using the first 7 numbers of Fibonacci and modified for PokerTH version of the ROI formula :

1. Placement Points:
1. = 13 | 2. = 8 | 3. = 5 | 4. = 3 | 5. = 2 | 6. = 1 | 7. = 1

2. Formula:

percentage =
100 *
(
(number_of_1st) * 39,39 +
(number_of_2nd) * 24,24 +
(number_of_3rd) * 15,15 +
(number_of_4th) * 9,09 +
(number_of_5th) * 6,06 +
(number_of_6th) * 3,03 +
(number_of_7th) * 3,03
- number_of_games * 10
) / (number_of_games * 10)

edit: (#40914) calculation starts when >= 100 games have been played

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18 Jun 2018 19:02 - 18 Jun 2018 19:03 #40888 by KaderLoth
KaderLoth replied.
They will never change ranking. Because it would mean, that they need to play poker and cannot fold anymore 99% until they have AA or KK and then bingo all in. Also they have a big lobby here and don't want to lose their high rank, which they only achieved by the old weak ranking that rewards folders and punishes real poker players.

I am best!
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20 Jun 2018 14:44 #40900 by sp0ck
sp0ck replied.

KaderLoth wrote: They will never change ranking. Because it would mean, that they need to play poker and cannot fold anymore 99% until they have AA or KK and then bingo all in. Also they have a big lobby here and don't want to lose their high rank, which they only achieved by the old weak ranking that rewards folders and punishes real poker players.


There nearly cannot be a more unqualified opinion to post.

Thank you KaderLoth.
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20 Jun 2018 20:01 - 20 Jun 2018 20:18 #40905 by boehmi
boehmi replied.

98s wrote: ...
I suggest using the first 7 numbers of Fibonacci and modified for PokerTH version of the ROI formula :

1. Placement Points:
1. = 13 | 2. = 8 | 3. = 5 | 4. = 3 | 5. = 2 | 6. = 1 | 7. = 1

2. Formula:

percentage =
100 *
(
(number_of_1st) * 39,39 +
(number_of_2nd) * 24,24 +
(number_of_3rd) * 15,15 +
(number_of_4th) * 9,09 +
(number_of_5th) * 6,06 +
(number_of_6th) * 3,03 +
(number_of_7th) * 3,03
- number_of_games * 10
) / (number_of_games * 10);


I don't get what you want to achieve. Your formula can be written shorter

100 * (3.03 * total points - 10 * games) / (10 * games)

or

100 * (3.03 * total points/(10 * games) - 1)

or

303 * total points / (10 * games) - 100

or

30.3 * total points / games -100

or

30.3 * average points - 100

So your formula is worse than the current one as it doesn't penalizes players who play only a few games. I could play 1 game and win it and nobody will ever catch me as I will have the maximal possible score of 293.9. Also with your formula negative scores are possible.

The current formula works with taking 25 * average points and multiplying it with a factor < 1. This factor will come closer to 1 the more games you play. The disadvantage with the current factor is, that it rises more at the beginning then later on. So we will change this in the next season. Currently the factor is 1 - 10/(10+games). In the next season it will be 1 - 10000/(10000 + games^3). The difference you can see here
https://www.desmos.com/calculator/zgqzrp6xlr

The factor will rise slower at the beginning and you will come closer to 1 earlier. This will make it harder for players who play less than 30 games.
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21 Jun 2018 07:59 #40914 by 98s
98s replied.
@boehmi

I did not understand how you use 5 different formulas with different results to prove that the 6th formula is true because the 7th is not true :D

of course, there will be a minimum number of games. I use 100 games in BBC

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21 Jun 2018 10:48 #40916 by boehmi
boehmi replied.
In case you're not joking, they are all simplified versions of your formula. So, they're all the same.

If you take the average points and multiply it with a fixed number and subtract a fixed number, you just could use the average without changing the order of the players in the ranking.

So your "invention" is, to have a minimum of 100 games for the ranking, which your formula doesn't say.
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