Hi ruby folks,
I would like annonce the release of a gem called "acts_as_meritocracy".
This gem is a mixin enabling a weighted majority voting system for any model with qualitative decisions/categories. As measure of consensus/inter-rater agreement, you can choose between a weighted variant of the Fleiss’s Kappa (by default) or the entropy of the distribution of votes. The consensus score is in the interval [0,1]. very high consensus=1 , very low consensus=0
NOTE: this voting system has been developed to take (collective) a decision about items, not rank items (e.g. by popularity). i.e. generally once a certain level of consensus is reached on a given item, a decision is taken and the vote is close.
more info: