Created: 2012-03-24 16:49
Updated: 2014-04-13 10:28



basically, its this: http://en.wikipedia.org/wiki/PageRank but you get to sepecify the data, and how to evaluate compare each data.


var ranker = require("ranker");

//generate alot of numbers
var data = [];
for (var a=0;a<100;a++) {

//function used to compare data
//needs to take any 2 elements from data defined above and
//returns a score of how close they are to each other
//(however you want to define "close")
var comp = function(a,b) {
  var diff = Math.abs(a-b);
  return a-b ? diff : 0;

//this will create:
//r.m   will be your adjancy matrix
//r.run is a function that runs the matrix operations
var r = ranker({
  data : data,
  comp : comp



  • data (required): array of nodes
  • comp (required): function that compares two nodes
  • debug: bool flag to shows how fast things are taking, default:false
  • dampener: float, default: .85
  • epsilon: float for determining when to stop iterating. Iterations will stop when change in ranking is smaller than this value. default:.00001
  • max_iter: integer of number of interations to try before giving up
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