Rod 
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| 25 Sep 2008 9:21 AM |
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Currently PokerDIY records scores against players but does not do anything with it. The League Results are currently ranked according to $$$ Total Profit/Loss (winnings) (here is our league as an example). Many league owners use points only or points for position and cash as prizes, whereas some just use cash for rankings. We want to cater for all of these leagues.
Here are the proposed scoring enhancements:
Firstly, the architecture of the league/season/game/player should be understood. When you enter a game and add players you can then edit each player record and assign a Rank (Position), Points and Winnings. The GAME results are then ranked on Rank only. E.g if you enter these results for Game 1:
Pos 2 Rod 10 points $20
Pos 1 Berty 5 points $10
Then Berty will be shown at the top of Game 1. The League ranking works differently - it does not look at Rank, it tabulates based on the proft/loss (Winnings - BuyIn) of all the games for the current season. This means that in this example the LEAGUE Results would look like
1 Rod 10 $20
2 Berty 5 $10
This is by design (in this example it is up to the League Owner to input the scores correctly). When you play a game/tourney etc. you always know the finish postion (unless you have 1000 people and only rank the top 20 or so) and assign the points and prizes based on the finish position (Rank).
So, in this example we use Profit/Loss to sort the League Table Results. The League Owner will be able to change the scoring method to any one of the following for each Season:
- Profit/Loss (as it is now)
- Ave Profit/Loss ((Winnings - Buy In)/NumGames)
- Points
- Av Points
- GamesPlayed
So the League Owner will set this value at Season level and this will determing the league ranking. Should the UI on the League be sortable (ie. so that the user can see different views of the data, or should this be a League Owner decision?). They can also decide if they want to show Points only, Cash only or Points and Cash throughout the season/league (bear in mind that the league results are actually showing the current Season results).
There are a lot more complicated algorithms for scoring - for example, if you win a tourney with 10 people it is harder than winning a tourney with 100 people, so do you get the same points for coming first? There are forumlas on the web based on Buy In size, Num Players, postion etc. to make the point system more fair. There is a mention of a custom scoring method here using formulaes. This will be implemented at a later stage.
Out of Interest: Minimum Games- There is currently a filter on the League page allowing anyone to filter the results based on the Minimum Number of Games Played. This is useful for when a player plays 1 game and wins but never plays again (in our league this happens when friends come over on holiday and play for 1 night only). This filter allows you to only
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thanks,
Rodney
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Spike 
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| 25 Sep 2008 10:13 AM |
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Let's see now *cracks knuckles* ;)
What I'm looking for...
Since I use Tournament Director, I would like to see the possibility to have the Overall Score used in TD imported in the same way as it's shown in TD.
This, unfortunatly, is not based on the points you can award, but some other scoring that I guess the creator of TD can explain. This system uses up to 4 decimals, and therefore is more accurate than awarding 10 points for 1 place, 5 for second etc... It also awards every player, no matter how many is entered in the tourney, which is somethiing I'm looking for in a scoring system.
I guess there are other ways of creating scoring for the league, but the Overall scoring is to my preferral. As far as I've seen, it prevents two or more players from ending up with the same score.
Our league plays by rank only during the season, and the 10 best players will receive extra chips to their starting stack at the season finals in September. If two players end up with the same score, the point of getting extra chips is kinda lost. (yes, better than no extra chips ofc, but I want it to be rewarded 10 different extra stacks, rather than having f.ex. 1st and 2nd getting the same amount) :D
Spike |
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LeeW 
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Fish

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| 25 Sep 2008 11:31 PM |
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all sounds good especially the seeing only scores of people who have played over 10 games...anything that makes my score look better im a fan of!.
Hitman league would be good? |
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Spike 
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| 29 Sep 2008 11:12 AM |
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I managed to create a scoring formula in TD that grants 1 point to every player for participating + 10 to 1 points for each player in the top 10.
I.E. This will grant 11 ponts for 1st place, 10 for second etc. and 1 point for every place below 10
if(rank <= 10, 11 - rank, 0) + 1
If you just want to give points to top 10, and not the 1 point extra for participation just leave out the last + 1
Spike |
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Rod 
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| 29 Sep 2008 12:17 PM |
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Ok, in the 3rd phase I plan on implementing this type of scoring. Of course, if you are importing your scores from the Tournament Director it will be resolved to a single point figure per player at this stage so this will work in the first version ocne it starts ranking on points.
Question - what happens with more than 10 players? ie is there any difference in coming 11th or 12th and how should they be displayed? I have seen some leagues assign a value of "Not Ranked" but this could get messy. A value of 0 is acceptable too, but I am still considering how to handle the display of ties, ie. if places 11 to 15 all got 0 then how should this be displayed? |
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thanks,
Rodney
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Rod 
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| 29 Sep 2008 12:25 PM |
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Another thing to consider - the ability to only rank the TOP x out of y results (this is different from filtering on at least x games before scoring)
How many of you use this method? (this would apply to either points or cash)
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thanks,
Rodney
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Spike 
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| 29 Sep 2008 12:45 PM |
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[QUOTE]Rodders wrote
Ok, in the 3rd phase I plan on implementing this type of scoring. Of course, if you are importing your scores from the Tournament Director it will be resolved to a single point figure per player at this stage so this will work in the first version ocne it starts ranking on points.
Question - what happens with more than 10 players? ie is there any difference in coming 11th or 12th and how should they be displayed? I have seen some leagues assign a value of "Not Ranked" but this could get messy. A value of 0 is acceptable too, but I am still considering how to handle the display of ties, ie. if places 11 to 15 all got 0 then how should this be displayed?
[/QUOTE]
In the formula i displayed rank 11 and below (no matter how many) will get 1 point... (for participating) so. no difference coming 11th 12th etc.. same score to all. if you remove the +1, no one will get the 1 point for participation.
Spike |
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Spike 
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Pair

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| 01 Oct 2008 8:22 AM |
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Found this formula in TD:
(1 - (r / (n + 1))) * 100
[QUOTE]TD help section
This Formula gives each player a number of points in the range of 0 to 100, based proprtionally on their ranking in the tournament.
[/QUOTE]
I believe this is the same formula that is used to calculate the Overall score in TD
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Rod 
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Lin 
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| 06 Oct 2008 4:03 AM |
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I can see the overall dollar value won/loss being important on a total league basis, but, at least for my league, the points are the important part for any given season.
I like the idea of using the points and the overall points from TD for a season. We issues points to all our players, however; usually have between 15 and 25. We use a 30 point system that changes based on the number of players per game; but 1st always gets 30, 2nd gets 29, etc. (That was hard to program into TD, let me tell you!) Plus we give 1 point for each Hit. If we are importing the points and overall points from TD, then you really only need to provide the ability to rank by points, then by overall points without having to calculate it with the system (for TD users, anyway). You could provide the options to calculate the overall points or allow the user to manually enter/import the overall score.
We also allow are players to buy 5 points when they miss a game. They must play a minimum of half the season's games, but if they missed any of those, they buy-in the EOS rake to get the minimum points per game missed. As the site stands, I think I can do this by altering the games affected. For instance going back to game 1, incrasing the number of players and giving the absentees their 5 points with a rank of 0 or last. But I haven't tried it yet to see if it will work.
Decimals are more accurate the more places you go, but I think 2 places are sufficient.
I'd like to also see the ability to customize the "Latest Results" block on the league main page and in each game; to show the fields that are relevant to my league.
Lin
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Spike 
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| 06 Oct 2008 6:36 AM |
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[QUOTE]Rodders wrote
I like that forumula, I'll make sure the point system can handle decimals (would you ever need more than 2 decimal points?)
[/QUOTE]
I don't know really. I've only used that scoring fot a couple of games, and then it was needed more than 2 too be able to separate a couple of ranks, but I think it might be sufficient when the number of games increase.
Spike |
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Lin 
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| 06 Oct 2008 2:41 PM |
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The formula that Spike posted (found from TD) is the Percentile method for the Tournament Scoring formula. According to TD, it should be coupled with the Percentile Overall Scoring formula of average(scores). This method provides "only a slightly higher advantage for larger tournaments."
They also provide a Logarithm method that results in a "strong advantage" for larger tourneys: The Tournament Scoring formula is ln((n+1)/r) and the corresponding Overall Scoring formula is (1-exp(-average(scores))) * 100.
(n = number of players in tourney; r = player's rank; ln = natural log; exp = e (Euler's constant --- opposite of a ln); scores = list of tourney score values for the tourneys in which a player participated)
My TD installation defaulted to the logarithmic formulas.
But the software also provides space for the user to create up to 5 Overall Scoring formulas. There is a chance that customized scoring could be used by a league.
For my league, we use the total points awarded for all games/per player to determine rank and the Overal Score as the tie breaker, assuming there are any.
Lin |
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Rod 
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| 09 Oct 2008 12:11 PM |
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[QUOTE]Lin wrote
I can see the overall dollar value won/loss being important on a total league basis, but, at least for my league, the points are the important part for any given season.
Decimals are more accurate the more places you go, but I think 2 places are sufficient.
I'd like to also see the ability to customize the "Latest Results" block on the league main page and in each game; to show the fields that are relevant to my league.
[/QUOTE]
Hi Lin,
The good news is that all 3 of your wishes have been granted ;)
1) You can now rank your league on Points, Average Points, Profit, Average Profit or Total Games Played. How you assign the points is up to you at this stage (your forumla sounds great) but you can enter them in or export them from Tournament Director into PokerDIY.
2) I increased the accuracy of the decimals to 6 places instead of 2.
3) When you edit a Season you can choose which columns are displayed.
Please edit your season and let me know what you think of the new changes. This is Phase One of the enhancements complete. |
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thanks,
Rodney
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Rod 
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