Elo rating system - WikipediaArpad Elo, the inventor of the Elo rating system The Elo[a] rating system is a method for calculating the relative skill levels of players, originally designed for rating chess players. It is named after its creator Arpad Elo, a Hungarian-American chess master and physics professor. The Elo system was invented as an improved chess rating system over the previously used Harkness rating system.[1] T
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