A paper presented at IACSS09

1. Mathematics and Sports: an Optimal Line Up Prof.dr. Gerard Sierksma University of Groningen ORTEC-TeamSupportSystems August, 2009

3. Comparing Athlete’s Performances the influence of technology

4. Athletic performance + technological progress

5. Tight fit clothing Indoor rinks Klapskate Artificial ice rinks Progress of the World Records

6. From absolute times to time differences - Times decrease -Differences become smaller

8. Davis Kuipers

12. Fit score of an athlete w.r.t. an attribute is a number that expresses the relationship between that attribute and the expected/target.

13. COACH & SCOUT ASSISTANT Collecting and analyzing data concerning development of skills and competences of individual players with respect to the team. PerPot graphs Line up

14. DEMO CSA Pro

16. KNSB Olympic Selection System

19. Model S1 S2 S3 Si 500m (4) 1000m (4) 1500m (4) 5000m (3) 10000m (3) Probability of winning … Skaters Disciplines

21. Integer Linear Programming Model

33. Netherlands – England August 12, 2009

38. Duitsland – Nederland 2-1 1974

39. 1 2 3 4 5 6

41. Intuition is the engine of creativity It puts the ‘nose in the right direction’ for motivating the team players; knowing how far a team player can improve on his/her qualities; finding the right new team player.

44. What is the objective? - short - long - cheap - fast

45. Laserstraal boort elke 15 sec. 3036 gaatjes in computerprintplaatjes. Probleem: Wat is de snelste route? Optimale oplossing onbekend!

46. Elke dag vliegen helicopters naar de 51 boorplatforms op de Noordzee om werknemers te vervangen. Probleem: Minimaliseer het aantal te vliegen zeemijlen. Optimale oplossing niet bekend!

47. … .. how many tours are there? Locations Tours 3 1 4 3 5 12 6 60 7 360 8 2520 9 20160 10 181440 11 1814400 12 19958400 13 239500800 20 60822550204416000 50 30414093201713378043612608166064768844377641568960512000000000000 ….. a lot!

48. Practical problems cannot wait for scientist to find the solution.

49. When is a problem hard and when is it easy ? ‘ Paradox’: Very difficult decision problems are ‘ easy’ to solve!! Complexity Theory

53. Last minute changes If a player is not mentally fit, then the coach changes its score on ‘mental fitness’ to a lower number. Within seconds Coach & Scout Assistant presents the new line-up together with the loss in the team score.

59. Further applications : Volleyball Hockey Rowers-8 Amer. Football Speed skating Decathlon Management teams

60. Coach & Scout Assistant - Screenshots

66. Best Skaters All Times, man Name Country Score Best four years 1 Eric Heiden USA -0.25 1979 1978 1980 1977 2 Ard Schenk NED -0.24 1972 1973 1971 1967 3 Johann Olav Koss NOR -0.19 1994 1991 1993 1990 4 Oscar Mathisen NOR -0.15 1912 1914 1908 1913 5 Gianni Romme NED -0.14 1998 2000 2003 2002 6 Jaap Eden NED -0.11 1896 1895 1893 1894 7 Hjalmar Andersen NOR -0.11 1951 1952 1950 1954 8 Ivar Ballangrud NOR -0.08 1936 1926 1930 1929 9 Rintje Ritsma NED -0.05 1995 1998 1996 1993 10 Clas Thunberg FIN -0.04 1925 1924 1929 1931

67. Best Skaters All Times, woman Name Country Score Best four years 1 Gunda Niemann GER -0.46 1995 1991 1996 1998 2 Karin Enke GDR -0.41 1986 1987 1984 1980 3 Andrea Mitscherlich GDR -0.24 1985 1984 1987 1983 4 Lidia Skoblikova URS -0.16 1963 1964 1960 1962 5 Claudia Pechstein GER -0.12 2000 1998 1994 2001 6 Anni Friesinger GER -0.10 2005 2004 2001 2002 7 Stien Kaiser NED -0.08 1967 1972 1971 1965 8 Inga Artamonova URS -0.08 1965 1958 1962 1957 9 Cindy Klassen CAN -0.06 2006 2005 2003 2001 10 Natalya Petrusyova URS -0.04 1981 1982 1980 1979

72. Olympische Schaatploeg Turijn 2006 KNSB Selectie /////////////////////////////////////////////////////////// Erben Wennemars Carl Verheijen Simon Kuipers Stephan Groothuis Simon Kuipers Sven Kramer Beorn Nijenhuis Bob de Jong Jan Bos 10k 5k 1500m 1000m 500m DSSselectie Beorn Nijenhuis ///////////////////////////////////////////////////////////// Erben Wennemars Carl Verheijen Mark Tuitert Stephan Groothuis Simon Kuipers Sven Kramer Gerard v Velde Bob de Jong Jan Bos 10k 5k 1500m 1000m 500m

74. PerPot graph of athlete i on the 500m supply demand PerPot scores