quote:Marco Bakker na het cruise-control-incident....
Op maandag 1 september 2003 14:40 schreef pyl het volgende:
En weer verder:
quote:Humor, neem ik aan?
Op maandag 1 september 2003 14:44 schreef bruinekanarie het volgende:[..]
Marco Bakker na het cruise-control-incident....
Hint dan maar: elke schaker gebruikt zijn naam; de meesten zullen denken dat het een acroniem betreft.
quote:Meneer heeft een opening ontwikkeld
Op maandag 1 september 2003 14:47 schreef pyl het volgende:[..]
Humor, neem ik aan?
Hint dan maar: elke schaker gebruikt zijn naam; de meesten zullen denken dat het een acroniem betreft.
en zomer
quote:Neen. Meneer had geen bemoeienis met het koninklijke spel zelve.
Op maandag 1 september 2003 14:50 schreef Parabola het volgende:
Meneer heeft een opening ontwikkeld
Hij is dus ook niet Fischer. Foei!
quote:Meneer was hoogleraar natuurkunde, maar bij wat hij bedacht kwam wel enige wiskunde om de hoek kijken.
Op maandag 1 september 2003 14:59 schreef Parabola het volgende:
Meneer was een wiskundige allicht?
quote:Mmmm...wie is dat?
Op maandag 1 september 2003 15:00 schreef Bimmel het volgende:
Georgi Adelson-Velskiy
Overigens: niet meneer schaak-mat, noch Rudy Remise.
quote:Mede ontwikkelaar van Kaissa.
Op maandag 1 september 2003 15:03 schreef pyl het volgende:[..]
Mmmm...wie is dat?
quote:
The ITEP groups program (under the guidance of the well-known
mathematician Georgi Adelson-Velskiy) won the match, and the scientists involved went on to develop
Kaissa, which became the first world computer chess champion in 1974
quote:Weer wat geleerd. Affijn u kunt wel raden dat mijn meneer niet Georgi Adelson-Velskiy is.
Op maandag 1 september 2003 15:07 schreef Bimmel het volgende:
Mede ontwikkelaar van Kaissa.
quote:Mijn Oma zei altijd "Een dag niets geleerd..."
Op maandag 1 september 2003 15:09 schreef pyl het volgende:[..]
Weer wat geleerd....
quote:En jawel, heer Parabola, het vertrouwen dat ik in u had, heeft u niet beschaamd. Hulde!
Op maandag 1 september 2003 15:12 schreef Parabola het volgende:
Professor Elo?
Arpad Emre Elö was born 100 years ago (on August 25, 1903) in Hungary. His family were farmers who moved to Cleveland, USA, in 1913. After finishing school he studied physics at the University of Chicago and went on to teach the subject until his retirement in 1969, after which he taught it on a part-time basis. The orthography of his name changed from Elö to Elo.
Young Arpad learnt chess at the age of ten, and the game became one of his many lifetime hobbies (including wine-making, horticulture, astronomy and music). He achieved a very respectable playing strength, winning the Wisconsin state championship eight times. His chess record includes over forty tournament wins, with two drawn games against Rueben Fine. He was elected president of the American Chess Federation in 1935 and was one of the founders of the USCF in 1939.
In 1959 the USCF asked Arpad Elo to improve the chess rating system used in the US chess community. This was not very accurate and contained some serious problems. For instance it was possible for players to gain points in spite of losing every game in a tournament, and to lose points after winning them all. There were other rating systems, like the Ingo system that was popular in Europe (on it's 1-200 rating scale strong players had lower numbers).
Elo proposed a new system with a statistically sound basis based on the bell curve. Elo's formula assumed that the performance of a player is normally distributed. He used rating numbers that were similar to those players were using at the time, so that people would not have to get used to completely different numbers. According to this system an average player was rated 1500, a strong club player 2000 and a grandmaster 2500.
Professor Elo's rating system was adopted by the USCF in 1960 and by FIDE in 1970. The system was designed to be simple enough to calculate with pencil and paper, but when the first pocket calculators appeared, Elo started to compile the official FIDE ratings on an Hewlett-Packard calculator.
The World Chess Hall of Fame writes: "Professor Elo's creativity, integrity and statistical skill earned him respect not just nationally but internationally. In his capacity as chairman of the FIDE Qualifications committee, for at least fifteen years, he was responsible for seeing that players who deserved international titles received them, and those whose demonstrated strength did not prove they merited an international title did not receive them."
Elo was always careful to keep the value of his invention in perspective, and in a 1962 Chess Life article, he came up with a memorable analogy to describe the difficulty of accurately measuring playing strength: "Often people who are not familiar with the nature and limitations of statistical methods tend to expect too much of the rating system. Ratings provide merely a comparison of performances, no more and no less. The measurement of the performance of an individual is always made relative to the performance of his competitors and both the performance of the player and of his opponents are subject to much the same random fluctuations. The measurement of the rating of an individual might well be compared with the measurement of the position of a cork bobbing up and down on the surface of agitated water with a yard stick tied to a rope and which is swaying in the wind."
Plaat!
(ik refereer uiteraard aan het plaatje van Bimmel)
On topic: Frans wiskundige?
[Dit bericht is gewijzigd door pyl op 01-09-2003 15:18]
