WCDF Ratings Update?

General Discussion about the game of Checkers.

Re: WCDF Ratings Update?

Postby megamau on Tue Aug 09, 2016 6:54 am

First of all, a big thank you to the mantainer of the ratings; it is a tough job and I know that to criticize is always easier than to do.
I am doing some research on various ratings databases I have some questions:

1) Is the "raw" data available for download ?
2) Is there a table of the initial ratings (i.e. the ones used in the "before" for the tournaments of 2008 ?
3) In the 3move nationals http://icheckers.net/tournaments/showty.php?tyid=11 the "before" rating appear to be missing. Is this correct ?

Some suggestions:
A) It would be nice to insert the links to the players in the tournament cards
B) Similarly, a column with the player number would help reading the pairings
c) The round standings could be a sortable table.

To conclude, a snapshot of the situation of other rating databases. They could be helpful for getting ideas/solutions.

http://tinyurl.com/guhutst
Image
User avatar
megamau
 
Posts: 15
Joined: Sun Aug 07, 2016 8:08 pm

Re: WCDF Ratings Update?

Postby John Acker on Tue Aug 09, 2016 12:32 pm

To add to megamau's list, the North American Scrabble Players Association has an excellent ratings/results site: http://cross-tables.com/.
John Acker
 
Posts: 105
Joined: Thu Feb 04, 2016 6:40 pm

Re: WCDF Ratings Update?

Postby clintolsen on Tue Aug 09, 2016 3:59 pm

I'd be willing to make the improvements to the tournament results pages if current webmasters need help / don't have time.
clintolsen
Site Admin
 
Posts: 38
Joined: Tue Aug 14, 2007 11:58 am
Location: Kitchener, ON, Canada

Re: WCDF Ratings Update?

Postby Alex_Moiseyev on Tue Aug 09, 2016 5:41 pm

Clint, are you willing to link here game database ?

AM
I am playing checkers, not chess.
User avatar
Alex_Moiseyev
 
Posts: 4082
Joined: Sat Nov 12, 2005 5:03 pm

Re: WCDF Ratings Update?

Postby clintolsen on Tue Aug 09, 2016 7:14 pm

What do you mean?
clintolsen
Site Admin
 
Posts: 38
Joined: Tue Aug 14, 2007 11:58 am
Location: Kitchener, ON, Canada

Re: WCDF Ratings Update?

Postby Alex_Moiseyev on Tue Aug 09, 2016 9:39 pm

clintolsen wrote:What do you mean?
Minimum - load games (if available) from this tournament and connect to players.
I am playing checkers, not chess.
User avatar
Alex_Moiseyev
 
Posts: 4082
Joined: Sat Nov 12, 2005 5:03 pm

Re: WCDF Ratings Update?

Postby clintolsen on Tue Aug 09, 2016 10:05 pm

I can't really promise anything unless someone with access asks me to do it.
clintolsen
Site Admin
 
Posts: 38
Joined: Tue Aug 14, 2007 11:58 am
Location: Kitchener, ON, Canada

Re: WCDF Ratings Update?

Postby Alex_Moiseyev on Wed Aug 10, 2016 8:04 am

i'll be back to you soon
I am playing checkers, not chess.
User avatar
Alex_Moiseyev
 
Posts: 4082
Joined: Sat Nov 12, 2005 5:03 pm

Re: WCDF Ratings Update?

Postby champion374 on Thu Aug 18, 2016 1:16 pm

Latest ratings are out http://www.wcdf.net/ratings.htm August 15th 2016

No titles as yet Players country misisng but nice
Kent ,,Ace,, Layne checker player from Barbados
User avatar
champion374
 
Posts: 440
Joined: Fri Oct 01, 2010 10:49 am
Location: Barbados

Re: WCDF Ratings Update?

Postby Alex_Moiseyev on Thu Aug 18, 2016 4:11 pm

champion374 wrote:Latest ratings are out http://www.wcdf.net/ratings.htm August 15th 2016

No titles as yet Players country missing but nice
With all my honesty I can guarantee you that this rating doesn't include ACF National at the end of July. My and Sergio rating are exactly the same as we had them before tournament.

August 15 is just a date of publication :D not "as-of" processing date.

More exciting updates are coming.

AM
I am playing checkers, not chess.
User avatar
Alex_Moiseyev
 
Posts: 4082
Joined: Sat Nov 12, 2005 5:03 pm

Re: WCDF Ratings Update?

Postby champion374 on Fri Aug 19, 2016 5:10 am

Well i hope as soon as end of year 2016.
Kent ,,Ace,, Layne checker player from Barbados
User avatar
champion374
 
Posts: 440
Joined: Fri Oct 01, 2010 10:49 am
Location: Barbados

Re: WCDF Ratings Update?

Postby champion374 on Fri Aug 19, 2016 5:13 am

Im not really puting the ratings in Qustion ,but some people wants to know my fellow play mate Richard Grazette is number 1 in the world
and has not played overseas against harder players.
Kent ,,Ace,, Layne checker player from Barbados
User avatar
champion374
 
Posts: 440
Joined: Fri Oct 01, 2010 10:49 am
Location: Barbados

Re: WCDF Ratings Update?

Postby Alex_Moiseyev on Fri Aug 19, 2016 6:24 am

champion374 wrote:my fellow play mate Richard Grazette is number 1 in the world
All he needs - play just one more official game with someone who has rating, drew it and then stay on top of this list for another 3 years :D
I am playing checkers, not chess.
User avatar
Alex_Moiseyev
 
Posts: 4082
Joined: Sat Nov 12, 2005 5:03 pm

Re: WCDF Ratings Update?

Postby liam stephens on Fri Aug 19, 2016 7:14 am

It's known as the "Frozen Rating Syndrome".

Several years ago I was asked - What could be done to improve the ratings ?

I replied:

The deflation that has occurred in the ratings is, in my view, due to the scoring system adopted of points per game. This is an inherent defect in the system that cannot be overcome. The opposite inflationary effect, however, can also occur in the case of the frozen rating but that is a separate category. (see list below)

Below is a list of items that may need fixing.

1. The compression syndrome.
The scoring by points per game instead of points per round greatly compresses the bandwith of the ratings.
The scoring by points per ballot (or round) in 3 Move Tournaments would result in a vastly improved rating list, and allow the Elo system to operate in the manner for which it was designed. (as in Chess)
Adherence to scoring by points per game in 3 Move Tournaments will, I believe, only prolong the current unsatisfactory situation.
When I pointed this out on a previous occasion, one commentator suggested that compression would be a good thing as it would lessen the difference between the lower and higher rated players !!

2. The apples and oranges syndrome.
The practice, when calculating the ratings, of including such a wide range of strengths of tournaments from the strongest master tournaments right down to friendly or fun day events, all in one huge amorphous mass.

3. Allocation.
One of the main purposes of the ratings is:
To assist in grading players in tournaments when these are classified as Master, Major, Minor etc. In short to make certain that a player cannot enter a class , below or above that which one belongs.

4. The frozen rating syndrome.
Enter one event and if you come away with a good score, do not enter any further events until the 3 year cycle is up.
liam stephens
 
Posts: 912
Joined: Sun Nov 27, 2005 2:56 pm
Location: Ireland

Re: WCDF Ratings Update?

Postby bazkitcase5 on Fri Aug 19, 2016 7:28 pm

The problem though is that any rating system needs a sheer amount of data to truly be accurate. As of now, there aren't nearly enough checker tournaments for most players to get an accurate rating, unless your one of the few who can travel and play 5+ tournaments per year.

If we switch to round scoring for the ratings, then you get literally half the amount of data than we are already getting. Because our game is different than chess, it might be that we would just be better served if maybe draws cost the better player less points and/or wins reward more points? I don't have enough of an understanding of math to know what kind of adjustments could be made, but I would think there has to be an adjustment that could get the results we want without causing the issues we are currently experiencing.
bazkitcase5
 
Posts: 79
Joined: Sun Nov 20, 2005 8:35 pm
Location: Amory, MS

PreviousNext

Return to General Discussion

Who is online

Users browsing this forum: No registered users and 3 guests

class=