Entropy contours of a model in which tags are drawn from the overall distribution of votes.

Abstract

<p>When a tag is selected it receives a vote, bringing its total number of votes to . There are tags with at least one vote. We plot the area in which the average change in entropy . The colors represent the magnitude of the decrease in entropy, . Our heuristic threshold , also plotted, tries to capture the number of votes that results in the largest decrease in entropy, making a tag reliable.</p