Lettera Matematica

, Volume 5, Issue 4, pp 313–321 | Cite as

A new algorithm for the rating of orienteering athletes: the OriELO system (OE)

  • Tullio Aebischer


Starting with some considerations on the scoring system in an orienteering race used in Italy, the author examines the main aspects of the Elo chess ranking system in order to show how it can be adapted to orienteering, creating the OriELO system. The OriELO system is based on the ranking position and the quantification of the arrival time compared to the time estimated on the basis of the relative strength of the opponents. The basis of the Elo ranking system and the proposed OriELO system is the likelihood of a win or defeat in a direct confrontation, given by a logistic distribution. Here the theoretical explanation with formulas is followed by a simulation.


Orienteering Elo ranking system OriELO Verhulst logistic curves 


  1. 1.
    Ciancarini, P.: Misurare le prestazioni agonistiche: il caso degli scacchi. Evento metrico GUFPI-ISMA. Università di Bologna, Bologna (2013)Google Scholar
  2. 2.
    Elo, A.: The Rating of Chessplayers. Arco, New York (1978)Google Scholar
  3. 3.
    Glickman, M.E.: Chess rating system. Am. Chess J. 3, 59–102 (1995)Google Scholar
  4. 4.
    Glickman, M.E., Jones, A.C.: Rating the chess rating system. Chance. 12, 21–28 (1999)CrossRefGoogle Scholar
  5. 5.
    Weisstein, E.W.: Logistic equation. MathWorld—a wolfram web resource. Accessed 31 Oct 2017

Copyright information

© Centro P.RI.ST.EM, Università Commerciale Luigi Bocconi 2017

Authors and Affiliations

  1. 1.RomaItaly

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