Don Dailey: <[EMAIL PROTECTED]>: >It's difficult for me to understand this due to different ranking >systems and pro ratings vs amateur ratings. I see here listed as a 4 >dan player on this page: > > http://www.nihonkiin.or.jp/player/htm/ki000343.htm > > >Is that 4 dan pro? My understanding is something like this: > >kyu player are casual players (or weak tournament players) > >low dan players are something like advanced amateurs or experts and weak >masters in chess. > >Pro's are like super high dan players and there is not very much >difference between ranks compared to regular dan players. I have heard >that a 1d professional will beat a 9d professional with 3 or 4 stones. > >So a 1d pro is something like a 7 or 8d+ amateur? > >Is this all "roughly" correct?
I guess _yes_ but all the numbers are of Japanese rating, which is something different than KGS. Following is a (not authorized but many people agreed) mapping: KGS Japan (more exactly, East Japan) 1d 3d~4d 1k 2d~3d 2k 1d~2d I'm KGS 3k now and, perhaps, 1d at Tokyo. I won a game against a Japanese 9p once with 8 stones handicap at a teaching game last Nov but I won't be able to win against Kaori Inaba 4p at an open game with 8 stones. I'm pretty sure that Crazy Stone is stronger than I and is 1k or stronger because, as you wrote, it won the game. Hideki >So I assume that Aoba Kaori is a 4d professional? That would relate to >something in the ballpark of 9 or 10d amateur if there were such a >thing. And with 8 stones handicap, this implies that CrazyStone did >what a 2d+ would have done, or it is weaker than 2d but got lucky. So >it's "performance rating" for that one game is lower bounded at around 1 >or 2 dan. Since it won the game we could pick 2 dan as a better lower >bound guess although since it won we do not have a reasonable upper >bound guess on it's performance except our own credulity. > >Does what I said make any sense? I am not a go player and I'm not very >comfortable with this guesswork. In chess, if you beat a player I am >used to thinking in terms of setting a performance rating of around 400 >ELO higher for that one game. I know this is not precise, but I also >think of 400 ELO subtracted from the player you beat as a kind of >"estimated" lower bound on your strength. If you beat a 2500 ELO chess >player, it's a relatively safe bet that you are at least 2100 ELO in >strength although technically there is a chance you could lose to >anybody, even a random move generator. > >I know this isn't precise language, but how many ranks would give us >around 90 - 95% confidence of superiority? If I beat a 5 dan player, >could you say that it's "very likely" I am at least 3 dan in strength? > >I'm thinking that if we estimate Aoba at 10d amateur and CrazyStone wins >with 8 stone handicap, it is roughly equivalent to beating a 2d player >without handicap and that we can subtract 2 stones to say that with >pretty high confidence CrazyStone is playing at least 1 kyu (but that's >it's much more likely Crazy Stone is stronger than this - after all it >performed in this one game at least as well as 2d player.) > > >- Don > > > > >On Thu, 2008-09-04 at 16:28 +0200, Rémi Coulom wrote: >> terry mcintyre wrote: >> > Congratulations! >> > >> >> Thanks. >> >> > I'm dying for details! What was the time limit? >> >> The organizers asked that the program should play at a constant time (30 >> second) per move. The sgf file contains time stamps (you can see the >> time with gogui, for instance). I don't know what was her time control, >> but she apparently played at the same pace as the program. >> >> > Did the game end on time or by resignation at move 179? >> > >> >> She resigned. >> >> > The pro was Aoba Kaori, yes? >> > >> >> Yes. >> >> The only other information I have about the match are these pages in >> Japanese: >> https://secure1.gakkai-web.net/gakkai/fit/program/html/event/event.html#6 >> http://www.ipsj.or.jp/10jigyo/fit/fit2008/events.html#1-4-1 >> >> I hope the organizers can send me some photos tomorrow. Then I will set >> up a web page and tell the list. >> >> Rémi >> _______________________________________________ >> computer-go mailing list >> computer-go@computer-go.org >> http://www.computer-go.org/mailman/listinfo/computer-go/ > >_______________________________________________ >computer-go mailing list >computer-go@computer-go.org >http://www.computer-go.org/mailman/listinfo/computer-go/ -- [EMAIL PROTECTED] (Kato) _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
