{{multiple issues| {{Cleanup|date=May 2010}} {{More footnotes|date=February 2010}} }} {{Machine learning bar}} ”‘Unsupervised machine learning”’ is the [[machine learning]] task of inferring a function to describe hidden structure from “unlabeled” data (a classification or categorization is not included in the observations). Since the examples given to the learner are unlabeled, there is no evaluation of the accuracy of the structure that is output by the relevant algorithm—which is one way of distinguishing unsupervised learning from [[supervised learning]] and [[reinforcement learning]]. ... Read more