RBO - An implementation of Rank-Biased Overlap in JavaScript

RBO: Object Constructor holding the RBO-state calculation:

@constructor
@param {number} p - degree (0..1) of top-weightedness of the RBO metric

Example: var rbo = new RBO(0.8);

RBO.calculate: Calculates similarity RBO:

@function
@param {Array} s -  sorted ranked list
@param {Array} t - sorted ranked list
@return {number} similarity RBO scores achieved

Example: rbo.calculate(['a', 'b', 'c', 'd', 'e'],['b', 'a', 'g', 'h', 'e', 'k', 'l', 'c']);

RBO.calcWeight: Calculates the weight of first d rankings with parameter p

@function calcWeight
@static
@param {number} p - degree (0..1) of top-weightedness of the RBO metric
@param {number} d - ranking

Example: RBO.calcWeight(0.9, 10); helps inform the choice of the parameter p

License

Free to use and abuse under the MIT license. http://www.opensource.org/licenses/mit-license.php