wilson-node

Wilson score interval

Simple implementation of Wilson score interval in Node.js. For browser version refer to https://github.com/msn0/wilson-score-interval.

Wilson score interval is a perfect tool for scoring comments. The only data you need is a number of upvotes and a total number of votes. It has really good properties even for small number of votes.

Installation

npm install wilson-node

Usage

var wilson = require('wilson-node');

wilson(upVotes, total);

wilson(430, 474); // → Object{left: 0.8776750858242243, right: 0.9301239839930541}
wilson(392, 436); // → Object{left: 0.8672311846637769, right: 0.9239627360567735}
wilson(10, 14);   // → Object{left: 0.4535045882751561, right: 0.882788120898909}