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This will make the ratings more accurate...

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lrj825
pawn2pawn wrote:

i think the rating system should be as close to the uscf's system that way a player really knows his/hers true rating.....


Ratings are a measure of playing strength relative to players in the same rating pool. Your chess.com rating measures your playing strength relative to other chess.com members. If you want to know your true playing strength relative to other USCF players, you need to play in USCF rated events.

Ziryab
Sensuinaga wrote:

I have played on this site for some time now, (live only--mostly standard games) and one thing that bugs me is the rating inflation that happens on this site.  For example, im like a 1500 on this site...but i know that rating would be lower at sanctioned events.

Here are two very, very simple things chess.com can do to immediately stop the rating inflation.

1.  no huge point jumps in the beginning, the most anyone could get is +30 points and that is if they beat someone who is 300 or more rating points higher than they are

2.  one should not gain ANY points for beating someone who is 300 rating points lower than they are.  I played a game today against someone 350 rating points higher than me...i lost the game and 2 rating points...i should have lost zero.

 

someone who is 300 points higher than his opponent should beat them 100 out of 100 times and because of this no points should be gained.  Adversely no points should be lost by the loser.  This is just basic elo calculations that would make every rating on here more accurate.  It would eliminate rating inflation on this site and rid the forums of all those rating questions ie. my_live_rating vs USCF/FIDE

 

Just my thoughts,

-Sensuinaga


Glicko is superior to Elo.

My USCF is higher than my live rating here, but comparisons of this sort are absurd. Each rating is valid within the pool of players in which it was earned, not outside.

Sensuinaga
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ichabod801
Sensuinaga wrote:

no one understands.


 I couldn't agree more.

Ziryab
Sensuinaga wrote:

no one understands.

 

thats ok.


Evidently you fail to comprehend that you are advocating a return to Elo ratings after a site has adopted the much superior Glicko system. I understand your proposal, and disagree that it will solve the alleged problem. Rather, it will create other problems that you have failed to imagine (see "The Glicko System" for an explanation).

Also see "Math People Only" on this site.

 

Your proposal is incorrect on one point as well: Arpad Elo himself designed the system with an assumption that a 400 point difference would predict that the higher rated player would score 92%. 100% with a mere 300 point difference is not a reasonable assumption, nor is it borne in practice. I once played a four game match where the rating difference was a tad over 500. After three games, the match concluded 2 1/2 - 1/2--a mere 83% score for the superior player.

Kupov3

Ratings as a system cant be inaccurate. Start everyone at 4000 and a 4500 player will beat a 4000 player almost every time. 

The ratings can't be compared to any other system, but they aren't inaccurate, or inflated (inflated from what?).

People can individually have inaccurate ratings however. This happens often when a player makes a new account, a 1400 live player may win three games against 1200 players and receive a 1700 rating, obviously this is inaccurate, and within a few more games the rating should adjust itself accordingly.

Sensuinaga
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Kupov3

Least of all you it seems.

Sensuinaga
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Niven42
Sensuinaga wrote:

I understand perfectly.


 Try looking at the percentile in the "today's rank" box on your stats page.  If you're at, say, the 80% percentile, then you can go to the other site or organization and see what the players at that percentage ranking are rated.  Then you can know that, for example, 1500 on Chess.com = 1350 USCF/FIDE or whatever (Those probably aren't the real numbers - I'm just saying that the percentage won't lie to you, 'cause it's always based on 100% of the players).

Niven42
TheGrobe wrote:

I don't think you understand what causes inflation.  For every point gained there is a point lost -- it's a zero sum game where the average rating is always the starting rating, that is until someone leaves.  The number of points that change hands is incidental -- ELO is not immune to inflation.


 FIDE/USCF also uses rating floors, which I'm sure some people would enjoy.  Most people hate to see their rating go down, so a nice rewards-based system like what is used in prize tournaments would help out in that regard.  You'd just have to live with the fact that when you beat everyone at your floor number, you're not eligible for a prize on that floor anymore.

 

http://en.wikipedia.org/wiki/Elo_rating_system

Tyzer
Sensuinaga wrote:

I understand perfectly.


Obvious troll/stubborn git/math fail is obvious.

 

Though I wonder (though I'm sure it's been suggested before), would it be possible to pin rated players' ratings on chess.com to their real-life rating? After all, chess.com already allows one to display the master titles once one's identity is verified. If this could be done for players' ratings as well, then it would provide a "benchmark" against which the rest of chess.com would play. This should (I think) end up making the entire pool of chess.com ratings closer to real-life ratings; because once you have a few reference points between the two pools everything else should fall into place.

 

Downside of this though, is that rated players' games on chess.com will no longer affect their rating...basically they're playing unrated games all the time. That could cause a drop in the effort they put into their games...which in turn would cause inaccuracies again.