Class: Wikipedia::VandalismDetection::Features::RevisionsCharacterDistribution

Inherits:

Base

• Object
• Base
• Wikipedia::VandalismDetection::Features::RevisionsCharacterDistribution

Includes:

Algorithms

Defined in:

lib/wikipedia/vandalism_detection/features/revisions_character_distribution.rb

Overview

This feature computes the Kullback-Leibler Divergence of the old and new text’s character distribution. The smaller the divergence, the higher the similarity of the distributions and conversely.

Instance Method Summary

• #calculate(edit) ⇒ Object

Methods inherited from Base

#count

Instance Method Details

#calculate(edit) ⇒ Object

# File 'lib/wikipedia/vandalism_detection/features/revisions_character_distribution.rb', line 13

def calculate(edit)
  super

  kullback_leibler_divergence(edit.old_revision.text, edit.new_revision.text)
end