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Standard ratings corrupted?

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Tapani

Just noticed a that the standard ratings have jumped up without playing a single game for many members. Hundreds of points in some cases. It is easy to find players that now have a higher standard rating than their highest for instance...

Something has gone wrong somewhere?

notmtwain

Yes, there are multiple threads about this already.

This one is the longest at this point.

Tapani
notmtwain wrote:

Yes, there are multiple threads about this already.

Yes, but this one was the first :p

shkal

Yes, I am suddenly +150

notmtwain
Tapani wrote:
notmtwain wrote:

Yes, there are multiple threads about this already.

Yes, but this one was the first :p

Rating changed

 is 9 days old already.  

Scottrf

The 9 day old one is a separate issue.

vacumm

why was it done?

notmtwain

http://www.chess.com/forum/view/livechess/huge-rating-jump

RonaldJosephCote

           monitor  

 

Hello all! The standard rating pool has been deflated at the high-end scale for quite some time on Chess.com now (FMs were only 1600-1800 in rating, and the highest possible was around 2100), these rating changes were an attempt to remedy that and get the rating pool back to a more reasonable scale.

Unfortunately there's been a bug where a few players are losing points, if this has happened please either send me a message or send it in to support (https://support.chess.com/customer/portal/emails/new) and your rating will be set to what it would have been after our ratings boost.

Thanks for your understanding and apologies for the confusion.

RonaldJosephCote

a few minutes ago · Quote · #74

monitor  

tepkel wrote:

monitor, would you mind going into the nuts and bolts of what changed in the algorithm? or is that proprietary info?

I geek out on this kind of stuff. 

The algorithm remains the same, and after a few weeks of everybody playing each other the ratings discrepancies created by the difference of adding 300 or 400 will dissipate so it is unimportant that currently some players are underrated or overrated.

If they play against each other they will resume their level and if they sit on their level then they don't form part of the pool anyway and we can forget about them.

The end result should be a shift in ratings on the high-end where we will start seeing regular legitimate 2000 vs 2000 level games, whereas before that was incredibly rare.

RonaldJosephCote

       monitor  

 

Ignoring the bug in which a few players lost points (which we plan to have resolved soon) all players have increased in rating, it shouldn't matter that some players are slightly unevenly matched because once everybody plays each other they will regain the rating that they deserve, except it will be +150-300 higher than before.

Sred that diagram doesn't update immediately, it's not meant for recording such rapid heavy changes, but it will update soon.

trotters64
RonaldJosephCote wrote:

       monitor  

 

Ignoring the bug in which a few players lost points (which we plan to have resolved soon) all players have increased in rating, it shouldn't matter that some players are slightly unevenly matched because once everybody plays each other they will regain the rating that they deserve, except it will be +150-300 higher than before.

Sred that diagram doesn't update immediately, it's not meant for recording such rapid heavy changes, but it will update soon.

RJC , I've just checked my standard rating and it has not been given any sort of boost at all nor have I lost any points...you say above that all players have had their rating increased..why then have I not ?

RonaldJosephCote

            Monitor is a staff person, I'm just trying to spread the word among ALL the threads.

RonaldJosephCote

     http://www.chess.com/forum/view/livechess/standard-ratings-boost?lc=1#last_comment

shaun

Hey, guys!  Just a bit more info.  You're right, the rating increases in standard are not in error.

http://www.chess.com/forum/view/livechess/standard-ratings-boost?page=1

This is occuring for every player, so the level of your opponents will not increase.  We are doing this because we had a deflation issue with standard ratings (and only the standard).  With the increased rating, your score is more accurately reflected when compared with the rest of the site.  I don't know about you, but playing a 1750 NM just doesn't make sense to me :D

There were also some very steep climbs because the rating pool was "squished" so the new rating pool should more accurately reflect your skill increases.

If you have any questions about this, feel free to drop us a line:

https://support.chess.com/customer/portal/emails/new

notmtwain

I think this reflects the adjustments. It will be interesting to check it out in a month. 

   
DrSpudnik

Wow, I had no idea most people sucked so much!

notmtwain
Eeyore12 wrote:

I am aware of the live ratings boost issue, but somehow mine dropped down 200 pts exactly (from 1852 to 1652).

Am I the sole case of such practice or it happened to others too?

Read post #9. It happened to a few.

SilentKnighte5
notmtwain wrote:
I think this reflects the adjustments. It will be interesting to check it out in a month.     

Did you check it out in a month?