11 lines
326 B
JavaScript
11 lines
326 B
JavaScript
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// elo.js
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function calculateElo(currentRating, opponentRating, actualScore, kFactor = 32) {
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const expectedScore = 1 / (1 + Math.pow(10, (opponentRating - currentRating) / 400));
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const newRating = currentRating + kFactor * (actualScore - expectedScore);
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return newRating;
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}
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module.exports = {
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calculateElo,
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};
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