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nax3t/ranking.js

Created March 1, 2017 00:14
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Reddit Ranking Algorithm in JavaScript
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ranking.js
function _confidence(ups, downs) {
var n = ups + downs;
if(n === 0) {
return 0;
}
var z = 1.281551565545;
var p = parseFloat(ups) / n;
var left = p + 1 / (2 * n) * z * z;
var right = z * Math.sqrt(p * (1 - p) / n + z * z / (4 * n * n));
var under = 1 + 1 / n * z * z;
return (left - right) / under;
}
function confidence(ups, downs) {
if(ups + downs === 0) {
return 0;
} else {
return _confidence(ups, downs);
}
}
@chinitadelrey
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chinitadelrey commented Aug 12, 2018 •
edited
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great work, thank you :)
why do you think the original code Amir posted had this split of functions?
thanks!!

@procarrera
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procarrera commented Jun 6, 2020 •
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Hey! tks for sharing
I am quite new, but couldn't find Date as parameter. doesn't it affect the results?

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