What is GlickoRD???

My score is 73 apparently!

See the full stats page on a profile for reference

RD partly differentiates Glicko fro Elo.

 

Glicko is a rating sysem. RD= rating deviation. As a person plays more games the RD lowers under the assumption that the more games played, the more accurate the rating. if a person doesn't play much over a period of time, the RD will increase slowly. So you can look at a person's RD to determine how accurate his rating is. But also, you can look at his RD to determine how many points you'll win/lose by playing him. If he has a high RD (somewhat inaccurate) lose to him will affect you less to compensate for the inaccuracy. If you have a high RD you'll have a lot of rating change after each game, if you have a low RD you'll have slighter changes. Your RD doesn't just lower the more you play, but rather lowers in relationship to the RD of your current opponent. So, everything in sort of interconnected and relatively confusing.

oh, I forgot:

http://www.freechess.org/Help/HelpFiles/glicko.html

C

Thanks,

Although what if you have more one opponent? I assume the formulaic explanation from the link accounts for that?

Also, what is a high/or low RD? ie on a scale of 1-100

All I know is that the initial RD is assumed to be 350 (at FICS). That's with 0 games played.

Thanks for the heads up Batgirl :-)

From the freechess.org page linked above:

"Each player can be characterized as having a true (but unknown) rating that may be thought of as the player's average ability."

The only problem with this assumption is that it assumes that each time a player plays a game, that put as much effort and thought into that game as they do for every other game.  I know for myself this is entirely untrue.  Sometimes I play for fun, sometimes I try new things, and mostly I could care less what my rating is.  Sometimes I will beat people a couple hundred points higher than myself, and sometimes the reverse.  So, for myself, the whole rd itself is probably highly innacurate, because I really do not play each game in the same way.

Is this "Glicko RD" value related to standard deviation?

yes

we start with 350 here at chess.com as well.

 

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wow, I didn't know that

 

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batgirl wrote:

oh, I forgot:

http://www.freechess.org/Help/HelpFiles/glicko.html

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Batgirl scores again!!  What a freaking awesome article!!

 

(Did I mention I love stats?)

Another helpful article to read would be http://www.chess.com/article/view/chess-ratings---how-they-work