Rank Name Elo Last Game 1 Park Jungwhan 2680 2015-06-30 2 Ke Jie 2665 2015-07-02 3 Kang Dongyun 2649 2015-06-30 4 Li Qincheng 2626 2015-07-02 5 Lian Xiao 2620 2015-06-30 6 Tuo Jiaxi 2611 2015-07-02 7 Lee Sedol 2590 2015-06-27 8 Kim Jiseok 2590 2015-06-30 9 Chen Yaoye 2570 2015-06-30 10 Hu Yaoyu 2559 2015-06-30 11 Wang Xi 2549 2015-06-30 12 Lee Donghoon 2549 2015-06-28 13 Mi Yuting 2544 2015-06-30 14 Iyama Yuta 2540 2015-06-29
I'd be interested in a list of peak ratings too. E.g. current leader park Jungwhan has a peak of 2700, Lee Changho had 2747 at his peak.
An Jungki at #16 looks like an anomaly, there's only three of his games in the database, which is not enough data, IMO, to say anything much about his rating.
That's interesting and might help to keep in touch with what's going on these days... And I'm glad to see that Cho Hunhyun is still alive and kicking at his age! As for feedbacks... Maybe the graphs could be more like in KGS, with a grid or lines helping to keep track of the years and the ratings, because it's quite hard to tell which rating there is for which year. Apart from that, I think it's all really neat.
Bored with skillful play? Watch my blunders on my YouTube Channel
HermanHiddema wrote:I'd be interested in a list of peak ratings too. E.g. current leader park Jungwhan has a peak of 2700, Lee Changho had 2747 at his peak.
An Jungki at #16 looks like an anomaly, there's only three of his games in the database, which is not enough data, IMO, to say anything much about his rating.
Thanks for pointing this out. In the future, I will indicate a confidence interval for each rating, and order players based on the lower bound of the confidence interval.
It would be interesting for you/macelee to comment on the data used. Does it include only the games listed in go4go's tournament pages or does it also include results from preliminaries and so forth?
But in any case, thanks for this!!! Very interesting.
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
I updated the results with the latest games from go4go.net. Lee Sedol takes #3, and Iyama Yuta #8. From now on, my website will be updated automatically every day.
I don't know how extensive the go4go database is. My impression is that the strong players have almost all their games listed, but it is not the case for the weaker players. Go4go is a game-record database, and I guess some are difficult to get.
What time span does the rating depend on? The last five or ten years or what? I would like to see peak values as well, so that older players could be recognized as the greatness they had at one time. I know these ratings really represent the current competitiveness of players, not career achievement.
Rémi's work is based on the entire GO4Go database. I supplied a web address so that he can get real-time update. As he correctly pointed out, go4go is only a game record database - it does not cover all the game results. But it does nearly cover all major tournaments from main stage onwards. There are limited number of game records from preliminary stages. Ratings for top players should be quite accurate as their collections are nearly complete.
macelee wrote:Rémi's work is based on the entire GO4Go database. I supplied a web address so that he can get real-time update. As he correctly pointed out, go4go is only a game record database - it does not cover all the game results. But it does nearly cover all major tournaments from main stage onwards. There are limited number of game records from preliminary stages. Ratings for top players should be quite accurate as their collections are nearly complete.
It would be interesting for Remi to comment here. It is not intuitively obvious to me that top player ratings would be accurate if their records are complete but those of their opponents are incomplete.
By the way, what are '个人赛' games? This seems like the biggest source of differences when I compared the go4go games to the list of games used for the Chinese ratings list for young players (e.g. Xie Ke).
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
Of course, more game results would make the ratings more accurate. I wonder if it is possible to get them anywhere. I don't use the moves of the game record, so I don't care if I get only the final results.
The time span is the time span of go4go. All the games are used.
I was looking at the games behind the Chinese professional ratings compared to my database. I have collected the games reported for the Chinese ratings from September 2014 through June 2015 (see this post for how that works). This was a total of 3,150 games. Meanwhile I have received about 2,200 games from the weekly go4go service for the same period. The go4go service covers all the major countries not just China so we can see that there are quite a lot of games that have the results reported but not the game records. Within the 3,150 games from China a total of 460 games (14.6%) were games between Chinese pros and Korean pros. This compares to 62 games (2.2%) against Japanese pros and 92 games (2.6%) against Taiwanese pros.
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
ez4u wrote:I was looking at the games behind the Chinese professional ratings compared to my database. I have collected the games reported for the Chinese ratings from September 2014 through June 2015 (see this post for how that works). This was a total of 3,150 games. Meanwhile I have received about 2,200 games from the weekly go4go service for the same period. The go4go service covers all the major countries not just China so we can see that there are quite a lot of games that have the results reported but not the game records. Within the 3,150 games from China a total of 460 games (14.6%) were games between Chinese pros and Korean pros. This compares to 62 games (2.2%) against Japanese pros and 92 games (2.6%) against Taiwanese pros.
Thanks for this info. I tried to follow the link to the Chinese web site, but I could not find where the game results are located. Can you give me a direct link, please?
I could try to collect this data and combine it with go4go. It would be a little work, but it seems doable.
I am now thinking about producing historical rating lists too. I would have a rating list for every month of the past, as well as a time table with the top 3 players of every month in the past 40 years or so.
ez4u wrote:I was looking at the games behind the Chinese professional ratings compared to my database. I have collected the games reported for the Chinese ratings from September 2014 through June 2015 (see this post for how that works). This was a total of 3,150 games. Meanwhile I have received about 2,200 games from the weekly go4go service for the same period.
The gap is not as big as shown by the figures. I have only limited amount of time collecting games for the delivery service. But many more games are added to the database without being included in the weekly packages.
