Monthly Archives: November 2012

2012, Judo

Tokyo Grand Slam 2012 – Day one.

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Today was day one of the Tokyo Grand Slam, one of the final events in the 2012 competition schedule.

Today the light weights took to the tatami and you might expect, the Japanese put on a marvelous display of Judo.

Looking at the data I collected form the IJF scoreboards, Ippon was awarded 36 times, with 23 remaining on the permanent record on http://ippon.org
This simple statistic tells us that on 13 occasions the referees awarded Ippon and later adjusted it down to a lesser score. Only 63% of the time did they stick with Ippon after awarding it. Now when looking at this number we have to be careful in reading too much into it and also not considering some of the factors affecting the data.

For example, the 36 number is derived by a simple search for records in the database. The database is populated by a piece of software that waits for a change in the scoreboard and writes one record each time the scores change. So a simple mistaken key press could be an instance here; not just when the referees or commission change a score.

We are also assuming that the 36 and 23 figures are accurate. Both could be wrong, they have not been verified.

Also you need to consider that this is data taken from one day of competition at a specific event. We are at the end of a competition year, post Olympic Games and in Japan. So for example Rishod Sobirov fought up a weight (as is Iliadis Illiadis later in the week). This affects the way people are fighting and the seeding. Obviously Japan has a large team, though it also features younger new players on the scene along with some of their seasoned players.

But this sort of snapshot data is useful, especially if we collect more and more of it over time and are able to grow large reliable sample groups to work with. Today for example the data grew by 296 records, which can be added to the existing data from the few events I have tested the system at to create a set of over 2000 scoreboard actions.

This data could potentially be used for example, to examine when scores are modified most often. The data contains the scoreboard clock data and the actual local time. So we could potentially identify patterns where errors occur. So perhaps (and this is conjecture) corrections happen most at 11:30am, which is perhaps halfway through the elimination rounds. We could use this data to suggest to event organisers a rest period for officials from 11:20 to 11:40 as the data might (again this is purely imaginary) suggest that people are making errors through tiredness.

We could easily discover the nations that score at the start of matches with big scores and those who do so later in matches. We could follow individual players scores over time and see trends in when they score and when they get scored against. Coaches might find this sort of data valuable in their planning.

In summary, collecting this data has proven to be fairly simple and recording it is a database where the information can be analysed is an important next step, one which I hope others will be interested in and maybe after reading this post might contact me with exciting ideas on how the data might be used. If that person is you, then please drop me an email to lw@judocoach.com

Lance

2012, Judo, notation

Qingdao Judo Grand Prix 2012 data, day two.

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Today was the heavier weights here in Qingdao, so when looking at the data perhaps there is a difference in the pattern to that from day one?

Day 2 (-70, -78, +78, -81, -90, -100, +100), Opening Rounds:

Total Scores: 139

Scores in 1st minute: 21
Scores in 2nd minute: 34
Scores in 3rd minute: 34
Scores in 4th minute: 37
Scores in 5th minutes: 13

Ippon scores in 1st minute: 6
Ippon scores in 2nd minute: 6
Ippon scores in 3rd minute: 9
Ippon scores in 4th minute: 10
Ippon scores in 5th minutes: 5

Day 2 (-70, -78, +78, -81, -90, -100, +100), Gold Medal Fights:

Total Scores: 19

Scores in 1st minute: 1
Scores in 2nd minute: 4
Scores in 3rd minute: 4
Scores in 4th minute: 6
Scores in 5th minutes: 4

Ippon scores in 1st minute: 1
Ippon scores in 2nd minute: 0
Ippon scores in 3rd minute: 1
Ippon scores in 4th minute: 2
Ippon scores in 5th minutes: 2

 

It is also worth noting that the numbers quoted here include all changes to the IJF scoreboards, so includes scores later changed. The minute times mentioned include the golden score as well; so again care must be taken when interpreting the numbers. All this data is included in a database should people be interested in doing some research and analysis.

Of course this is a small sample, but it is interesting none the less to look at the numbers and especially to look at the differences between light and heavy. We need to consider also where we are in the Olympic cycle and how that affects the players attending the event and the level of preparation and focus they might have on the day.

Your comments on this are invited and appreciated.

Preliminary rounds, results:

GP_CHN2012 -100kg Mat:2 2:57 NUNES, Renan (BRA) 100(1)-000(0) DORJ, Anar (MGL)
GP_CHN2012 -100kg Mat:2 2:50 BAUZA, Karolis (LTU) 100(1)-000(0) XU, Xin (CHN)
GP_CHN2012 -81 kg Mat:1 2:04 KHABACHIROV, Murat (RUS) 001(1)-000(1) CHO, Seung Kwon (KOR)
GP_CHN2012 -70 kg Mat:3 0:58 CHEN, Yun-Ting (TPE) 100(0)-000(0) KAUR, Gagandeep (IND)
GP_CHN2012 -100kg Mat:2 2:28 ASANUMA, Takumi (JPN) 000(0)-100(0) XU, Jie (CHN)
GP_CHN2012 -70 kg Mat:3 1:51 MERLI, Nadia (BRA) 000(0)-100(0) OSUMI, Yuka (JPN)
GP_CHN2012 -100kg Mat:2 2:14 MAGOMEDOV, Shamil (RUS) 001(1)-100(2) KIM, Do Hyoung (KOR)
GP_CHN2012 -81 kg Mat:1 0:00 OTGONBAATAR, Uuganbaatar (MGL) 011(0)-000(0) EBI, Yasuhiro (JPN)
GP_CHN2012 -70 kg Mat:3 4:08 VARGAS KOCH, Laura (GER) 110(0)-000(0) CHEN, Rong (CHN)
GP_CHN2012 -81 kg Mat:1 4:24 DAVIS, Thomas (GBR) 100(0)-000(0) GAO, Haiyuan (CHN)
GP_CHN2012 -100kg Mat:2 1:46 CORREA, Luciano (BRA) 100(0)-000(1) ZHAO, Dongming (CHN)
GP_CHN2012 -81 kg Mat:1 3:06 PENALBER, Victor (BRA) 101(0)-000(2) KUMAR, Manoj (IND)
GP_CHN2012 -100kg Mat:2 3:52 KUMAR, Pramod (IND) 000(0)-100(0) KUMASHIRO, Yusuke (JPN)
GP_CHN2012 -70 kg Mat:3 0:00 HAN, Weiyan (CHN) 010(1)-000(3) YOU, Mee Won (KOR)
GP_CHN2012 -81 kg Mat:1 2:23 WU, Wen Shun (TPE) 000(0)-101(0) WANG, Xuewen (CHN)
GP_CHN2012 -100kg Mat:2 3:56 YUAN, Jinling (CHN) 100(0)-000(0) HONG, Yi Chih (TPE)
GP_CHN2012 -81 kg Mat:1 2:42 GAN, Tuvshinjargal (MGL) 101(0)-000(2) TURABOEV, Bekzod (UZB)
GP_CHN2012 -100kg Mat:2 1:14 LIM, Seung Rok (KOR) 000(1)-100(1) HUSSAIN, Shah (PAK)
GP_CHN2012 -78 kg Mat:1 4:01 YANG, Xiuli (CHN) 001(0)-100(0) HIDAKA, Misaki (JPN)
GP_CHN2012 -70 kg Mat:3 0:00 TSEND AYUSH, Naranjargal (MGL) 000(1)-000(0) ZHOU, Chao (CHN)
GP_CHN2012 -90 kg Mat:2 2:25 SINGH, Avtar (IND) 000(1)-100(0) ZHANG, Jun (CHN)
GP_CHN2012 -78 kg Mat:1 1:13 ZHANG, Jie (CHN) 100(0)-000(0) HSU, Hsin-Mei (TPE)
GP_CHN2012 -78 kg Mat:1 4:04 VELENSEK, Anamari (SLO) 100(0)-000(0) CHEN, Ying (CHN)
GP_CHN2012 -78 kg Mat:1 3:15 WANG, Szu-Chu (TPE) 000(0)-100(0) HAN, Li (CHN)
GP_CHN2012 -70 kg Mat:3 0:15 POGACNIK, Anka (SLO) 001(0)-110(1) TAKAHASHI, Rui (JPN)
GP_CHN2012 -90 kg Mat:2 0:00 KIM, Kwang-Ho (KOR) 001(1)-000(2) ZHANG, Zhongbo (CHN)
GP_CHN2012 -81 kg Mat:1 2:18 KHABACHIROV, Murat (RUS) 111(0)-000(0) ZHANG, Wentao (CHN)
GP_CHN2012 -100kg Mat:2 1:43 NUNES, Renan (BRA) 100(1)-000(0) BAUZA, Karolis (LTU)
GP_CHN2012 +100kg Mat:3 0:30 ULZIIBAYAR, Duurenbayar (MGL) 000(0)-100(0) WANG, Quanchao (CHN)
GP_CHN2012 +78 kg Mat:3 5:00 QIN, Qian (CHN) 100(0)-000(0) WOO, Jung-Min (KOR)
GP_CHN2012 -100kg Mat:2 1:53 XU, Jie (CHN) 000(2)-101(0) KIM, Do Hyoung (KOR)
GP_CHN2012 -81 kg Mat:1 1:35 OTGONBAATAR, Uuganbaatar (MGL) 001(0)-000(2) DAVIS, Thomas (GBR)
GP_CHN2012 +78 kg Mat:3 0:00 WANG, Rui (CHN) 002(1)-000(0) ICHIHASHI, Suzuka (JPN)
GP_CHN2012 -81 kg Mat:1 0:00 PENALBER, Victor (BRA) 001(0)-000(2) WANG, Xuewen (CHN)
GP_CHN2012 -100kg Mat:2 0:00 CORREA, Luciano (BRA) 000(2)-001(0) KUMASHIRO, Yusuke (JPN)
GP_CHN2012 +78 kg Mat:3 0:00 ALTHEMAN, Maria Suelen (BRA) 000(2)-002(0) LI, Yang (CHN)
GP_CHN2012 -100kg Mat:2 2:43 YUAN, Jinling (CHN) 101(0)-000(0) HUSSAIN, Shah (PAK)
GP_CHN2012 -81 kg Mat:1 1:57 GAN, Tuvshinjargal (MGL) 001(1)-100(2) LI, Maojian (CHN)
GP_CHN2012 -70 kg Mat:3 1:52 PORTELA, Maria (BRA) 100(0)-000(1) CHEN, Yun-Ting (TPE)
GP_CHN2012 -90 kg Mat:2 3:49 SULEMIN, Grigorii (RUS) 002(4)-100(0) ZHANG, Jun (CHN)
GP_CHN2012 -90 kg Mat:2 0:54 LI, Kunpeng (CHN) 000(0)-101(0) HUH, Chae Goo (KOR)
GP_CHN2012 -78 kg Mat:1 0:00 HIDAKA, Misaki (JPN) 001(0)-000(2) CHOI, Mi-Young (KOR)
GP_CHN2012 -70 kg Mat:3 0:00 OSUMI, Yuka (JPN) 000(1)-100(1) VARGAS KOCH, Laura (GER)
GP_CHN2012 -90 kg Mat:2 0:00 KIM, Kwang-Ho (KOR) 001(1)-000(2) LKHAGVASUREN, Otgonbaatar (MGL)
GP_CHN2012 -78 kg Mat:1 1:29 JUNG, Da Woon (KOR) 010(1)-000(1) ZHANG, Jie (CHN)
GP_CHN2012 -78 kg Mat:1 4:44 VELENSEK, Anamari (SLO) 100(0)-000(0) CHONGTHAM, Jina Devi (IND)
GP_CHN2012 -70 kg Mat:3 0:54 CHEN, Fei (CHN) 001(1)-000(2) HAN, Weiyan (CHN)
GP_CHN2012 -90 kg Mat:2 0:00 CHENG, Xunzhao (CHN) 010(1)-001(0) KITANO, Yuichi (JPN)
GP_CHN2012 -78 kg Mat:1 1:47 POWELL, Natalie (GBR) 010(1)-100(0) HAN, Li (CHN)
GP_CHN2012 -70 kg Mat:3 3:15 ZHOU, Chao (CHN) 100(0)-000(0) TAKAHASHI, Rui (JPN)
GP_CHN2012 +100kg Mat:3 1:42 PASKEVICIUS, Marius (LTU) 100(0)-000(0) WANG, Zhen (CHN)
GP_CHN2012 +100kg Mat:3 4:08 WANG, Quanchao (CHN) 100(0)-000(0) LEE, Po Yen (TPE)
GP_CHN2012 +100kg Mat:3 0:00 SAIDOV, Renat (RUS) 001(1)-000(2) SHEN, Zhuhong (CHN)
GP_CHN2012 +100kg Mat:3 1:05 KIM, Soo-Whan (KOR) 000(2)-001(1) WANG, Qiang (CHN)

Semifinals:

GP_CHN2012 -81 kg Mat:2 0:46 KHABACHIROV, Murat (RUS) 001(0)-000(1) OTGONBAATAR, Uuganbaatar (MGL)
GP_CHN2012 -81 kg Mat:2 2:00 PENALBER, Victor (BRA) 100(0)-000(0) LI, Maojian (CHN)
GP_CHN2012 -70 kg Mat:2 2:29 PORTELA, Maria (BRA) 002(0)-001(0) VARGAS KOCH, Laura (GER)
GP_CHN2012 -70 kg Mat:2 0:00 CHEN, Fei (CHN) 010(1)-000(3) ZHOU, Chao (CHN)
GP_CHN2012 -90 kg Mat:2 0:00 ZHANG, Jun (CHN) 001(0)-000(1) HUH, Chae Goo (KOR)
GP_CHN2012 -90 kg Mat:2 2:36 KIM, Kwang-Ho (KOR) 000(0)-100(1) CHENG, Xunzhao (CHN)
GP_CHN2012 -78 kg Mat:2 0:51 HIDAKA, Misaki (JPN) 000(2)-001(0) JUNG, Da Woon (KOR)
GP_CHN2012 -78 kg Mat:2 4:24 VELENSEK, Anamari (SLO) 100(0)-000(0) HAN, Li (CHN)
GP_CHN2012 -100kg Mat:2 0:00 NUNES, Renan (BRA) 002(0)-001(1) KIM, Do Hyoung (KOR)
GP_CHN2012 -100kg Mat:2 0:00 KUMASHIRO, Yusuke (JPN) 001(1)-000(0) YUAN, Jinling (CHN)
GP_CHN2012 +78 kg Mat:2 2:54 QIN, Qian (CHN) 101(0)-000(0) WANG, Rui (CHN)
GP_CHN2012 +78 kg Mat:2 0:00 LI, Yang (CHN) 000(2)-001(1) YU, Song (CHN)
GP_CHN2012 +100kg Mat:2 2:09 PASKEVICIUS, Marius (LTU) 110(0)-000(1) WANG, Quanchao (CHN)
GP_CHN2012 +100kg Mat:2 0:00 SAIDOV, Renat (RUS) 010(2)-001(3) WANG, Qiang (CHN)

Gold Medal Fights:

GP_CHN2012 -81 kg Mat:2 2:43 KHABACHIROV, Murat (RUS) 000(0)-100(0) PENALBER, Victor (BRA)
GP_CHN2012 -70 kg Mat:2 1:59 PORTELA, Maria (BRA) 000(1)-100(1) CHEN, Fei (CHN)
GP_CHN2012 -90 kg Mat:2 1:27 ZHANG, Jun (CHN) 000(1)-100(1) CHENG, Xunzhao (CHN)
GP_CHN2012 -78 kg Mat:2 0:00 JUNG, Da Woon (KOR) 000(2)-102(0) VELENSEK, Anamari (SLO)
GP_CHN2012 -100kg Mat:2 4:41 NUNES, Renan (BRA) 000(0)-100(0) KUMASHIRO, Yusuke (JPN)
GP_CHN2012 +78 kg Mat:2 0:00 QIN, Qian (CHN) 000(1)-000(1) YU, Song (CHN)
GP_CHN2012 +100kg Mat:2 0:04 PASKEVICIUS, Marius (LTU) 110(2)-001(1) SAIDOV, Renat (RUS)

 

 

 

2012, Judo, notation

Qingdao Grand Prix 2012 data, day one.

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In this article are some simple statistics gathered at the 2-12 Qingdao Judo Grand Prix.

Day 1 (-48, -52, -57, -63, -60, -66, -73), Opening Rounds:

Total Scores: 227

Scores in 1st minute: 43
Scores in 2nd minute: 45
Scores in 3rd minute: 57
Scores in 4th minute: 48
Scores in 5th minutes: 34

Ippon scores in 1st minute: 11
Ippon scores in 2nd minute: 7
Ippon scores in 3rd minute: 11
Ippon scores in 4th minute: 13
Ippon scores in 5th minutes: 6

Day 1 (-48, -52, -57, -63, -60, -66, -73), Gold Medal Fights:

Total Scores: 36

Scores in 1st minute: 3
Scores in 2nd minute: 7
Scores in 3rd minute: 13
Scores in 4th minute: 5
Scores in 5th minutes: 1

Ippon scores in 1st minute: 1
Ippon scores in 2nd minute: 2
Ippon scores in 3rd minute: 4
Ippon scores in 4th minute: 1
Ippon scores in 5th minutes: 0

The data here includes all scores on the IJF scoreboards, including those later changed which is important to consider. Tomorrow are the heavier weights, so it will be interesting to see if the distribution is similar or not.