2008-2009 ACF Ratings Updated

[Eric Strange]

We have gotten 2008 through 2009 where David Butler had left off calculated.

I picked up where ACF ratings left off and calculated everyone. If someone was not already in ACF ratings database then they were added as new players. Every tournament was examined for errors before being submitted and ALL tournaments valid to American Checkers between this time frame were calculated (that had a valid round by round score) including 2008 Beijing world mind games.

We ran into a lot of difficult issues because of how games cross tables were posted so I want to go over how cross-tables HAVE to be done for now on.

I will allow 2 formats:

Round 1 Round2
Me 2T4 2T1 <----- this shows results of each round and not accumulative points
You 1T0 1T3

Second Example:

Round 1 Round2
Me 2T4 2T5 <----- this shows results of each round and accumulative points as the round progress
You 1T0 1T3

IF RESULTS ARE NOT PUT INTO A CROSS TABLE IN ONE OF THESE TWO FORMATS THEN YOUR TOURNAMENT RESULTS WILL NOT BE CALCULATED. (officials please pass this message around)

To view updated to 2009 ratings then please visit http://cross-board.com/ratings (there is a search box at top of page if u want to find someone specific. Players who haven't played since 2007 are not shown in main pages)

We will start on 2009 on Monday. Checkers is being brought into the 21st Century and I hope you will all welcome it with open arms!!!

-Eric Strange

[Alex_Moiseyev]

Eric, my ACF rating before it was stopped calculating was 2,700. Now it's dropped more than 150 points. I hope you didn't use WCDF rating for your calculation ? WCDF rating is inaccurate and we can't rely on this or use it for processing ACF rating.

Sooner or later WCDF will be gone or ACF will be separated from WCDF and we should have ACF rating be accurate and independent by this thime.

Alex

[Alex_Moiseyev]

Eric, my ACF rating before it was stopped calculating was 2,700. Now it's dropped more than 150 points.

You know ... you probably right (ha-ha) In 2008 I din't do very well and even lost two rounds in the beginning of year to Michael Holmes and Richard Beckwith. Lets see how it goes in 2009 and 2010. I hope things will be improved.

There are two rating records I am hunting for: 2,745 - the highest Chinook ACF rating before it quit and 2,812 - Dr. Tinsley highest ACF rating. Compare with them, it is much harder for me to get these numbers because noone is around in these rating zones and I should score 90%-95% points which is almost or absolutely impossible.

[Eric Strange]

Yes Alex,

I used current ACF ratings as of END of 2007. I am using the ELO rating system also... which is NOT what wcdf uses. It will be very hard for you to hold really high ratings because even a draw will hurt your rating considering nobody is in your rating field other than king and kondlo. We have this rating system calculating everything as accurately as possible. The only way to make it more accurate is if we calculate game by game instead of round by round but it will not affect ratings very much.

You can also view http://cross-board.com/tourneys <---- this has each tournament calculated and how it affected each persons rating as well as the cross table.

KEEP IN MIND THIS LINK IS STILL BETA STAGES AND IF THERE ARE OVER 8 PLAYERS IN THE TOURNAMENT IS STARTS TO DISPLAY IMPROPERLY. WE ARE WORKING ON THIS AND WILL HAVE IT FIXED ASAP.

[Alex_Moiseyev]

Eric, did you process Olympic event in Beijing in October 2008 where several ACF players including myself participated ?

Alex

[Eric Strange]

Alex... Go read my very first post in this topic and it says Beijing 2008 was calculated. I checked your score at end of 2007 and you were 2650 and now your 2578... you lost 72 points not 150 you big baby! HAHA

EVERYTHING THAT COULD POSSIBLY BE CALCULATED IS BEING CALCULATED!!! calculating world mind games was a pain because it was not in a cross table but we did it!!!

[Alex_Moiseyev]

I checked your score at end of 2007 and you were 2650 and now your 2578... you lost 72 points

Keep going for 2009-2010. All points will be back, boy ! Once not much competition with human, I'll be fighting with numbers

[Eric Strange]

I am checking for you John.

I see a draw + win vs sierra... who was 400 points under you
draw vs williamson who was about 350 points under you
2 draws vs wenberg who was 150 under you
2 draws vs loconti who was 400 under you
did good vs holiday with a win and draw who was 100 under you
draw and win vs wenberg which is good
looks like you played solid vs bulstra who had 50 points or so higher rating

basically all of those draws vs opponents wayyyy lower than you will seriously drop your rating. i think 400 point different wont even give you points if u win
but I am not 100% on that. Just had bad luck with how low rated all of your opponents were. I know in kurnik when I am around 1600 and I play someone at 1300 if they draw I lose like 15 - 20 points. Now you see why it is so difficult for Alex to maintain ratings.

[Eric Strange]

The problem is that there were no real ratings to base divisions on.

Once ratings are up to date we can make a standard rule on divisional play.

[Alex_Moiseyev]

Now you see why it is so difficult for Alex to maintain ratings.

Yeaaa ... in my case it's usually 500-600 points below, sometimes 800 ! Any drawn round is painful ... any lost round is catstrophic disaster.

In chess they have adjustment rule (not part of formula):

Winner of event without tie don't lose points.

But in checkers we are smarter and are hunting on strong players

[Eric Strange]

Now I think your just making rules up to benefit yourself HAHA.

[Alex_Moiseyev]

to benefit yourself HAHA.

Some day when you improve and will be in my shoes - it will benefit two of us It's not my fault that today such rule would benefit only limited number of players - this is synonim of sentence: "not much strong players on horizon today" !

[rich beckwith]

Eric,

Thanks once again for all your work on this project. Going back to your initial post, I do have all cross-tables through 2010 (and several years previous) already in the "Dave Butler" cumulative T format, which is also an approved format by Igor of WCDF. Patrick, JR, and I have been sharing these files, but I'm not clear now whether you had seen these. I can e-mail 2009 or 2010 if needed.
It's also quite possible I missed some smaller events where the full cross-tables were not submitted (just "final standings" only) in timely fashion, so perhaps these were the problem areas you referred to.

[Eric Strange]

Yes Rich,

I did receive some 2009 and 2010 from you which I still have. it was missing some smaller tournaments and I think were only half of the year for 2009? if you could resend me everything you have for 2009 and 2010 to eric.j.strange@gmail.com in case I am missing something I would appreciate it.

[Eric Strange]

We will be starting 2009 - 2010 today and hopefully be done with it in a week or 2.