Posts: 2414 Location: Tokyo, Japan Liked others: 2350 Was liked: 1332
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KGS: ez4u
From Qipai.org.cn. Below are the top 150 pros with their change from the previous month.
Shi Yue lost a third of his cushion between himself and 2nd place Ke Jie. However, the big move in the top 10 was Tuo Jiaxi's jump from 9th to 3rd on a 25-rating-point gain. Tuo had a perfect month going 5 for 5, including wins over Shi Yue, Jiang Weijie, and Kim Jiseok (in the city league). The biggest declines were posted by Mi Yuting and Gu Li who fell 4 places each to 7th and 8th respectively.
Along with the ratings list each month there is another page released at the same time involving games. Since I do not read Chinese I had not realized the significance. For some reason this month I opened the page and only then recognized that it was a list of all the rated games, including who played whom on what date in what tournament, the result, and the rating points gained or lost. Naturally I went back and scraped the last 8 months' games (Sept. through Apr.) to see what I could learn. Other than the details of Tuo Jiaxi's result, reported above, the most interesting finding was how games with foreign players affect the ratings.
Foreign players are not directly represented in the ratings list. However, games with foreign players are calculated in the results of Chinese pros. There are a number of proxy 'players' included in the ratings system that are used to calculate adjustments. There are separate proxies for Korean, Japanese, and Taiwanese pros. It will be interesting to see if new proxies are created in the May ratings to report on the results versus European pros in the Globis Cup played last weekend.
The following table sorts the proxies by Country and then by Rating. It also includes the theoretical position in the Chinese ratings list that they would occupy if they were included and the date of the last game they were used for.
Attachment:
Foreign player proxies in Chinese rating system.jpg [ 110.58 KiB | Viewed 4063 times ]
The Korean players have the most detailed structure with at least 11 proxies. There are 10 groupings based on the Korean ratings (presumably). These start with the top three players, 韩1-3 (clearly from the dates and tournaments in the list this is Park Junghwan, Kim Jiseok, and Lee Sedol). There follow players 4-7, 8-13, etc. There is also a separate proxy for women pros (true for each country '女棋手'). Note that the proxies are no longer in the order of their names. For example the proxy for the 19th through 25th Korean pros (韩19-25) has a higher rating than those for the 8th-12th or 13th-18th pros. Each proxy has its rating adjusted by each game. There is no indication where they started in the rating list. Note also that at present the proxy for the top 3 Koreans is rated 30 points above Shi Yue. The effect of this is that Chinese pros gain a lot of points for beating the top Koreans but drop fewer points when they lose.
The Japanese and Taiwanese proxies are different. There are fewer of them and less precise in meaning (as far as I can tell, but I don't really understand the meaning of all the terms used). The top-rated proxy for Japan (日大三冠) means winners of the top three titles (Kisei, Meijin, and Honinbo). This seems to include not just the current title holder, Iyama, but past winners as well. Gu Li's victory over Cho U last December in the Chunlan Cup was included in the rating system with this proxy. There may be more than just the proxies listed here but they simply haven't been used in the last 8 months.
_________________ Dave Sigaty "Short-lived are both the praiser and the praised, and rememberer and the remembered..." - Marcus Aurelius; Meditations, VIII 21
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ez4u
I went back and scraped the last 8 months' games (Sept. through Apr.) to see what I could learn. Other than the details of Tuo Jiaxi's result, reported above, the most interesting finding was how games with foreign players affect the ratings.