Eli5: The Elo rating system

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Im not able to head about it. Can someone explain

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2 Answers

Anonymous 0 Comments

Elo is the rating system developed for chess, but it’s also used in other games where one side wins and the other loses. Adaptations have been made for games with a score, where winning 5-2 is better than winning 3-2, but that’s not traditional Elo. It’s also not an acronym, it’s named after a guy named Elo who invented it.

The concept is that the difference in ratings is a predictor of match outcome. So, If I have a much higher rating, I’m expected to win so if I win my rating changes little. On the other hand, if I lose my rating (and the lowly rated player that beat me’s rating) changes by a larger amount.

There is no meaning in the absolute value of the rating, like you see in a golf handicap. Only the relative rating between two players/teams is important.

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