Class: ActsAsFerret::MoreLikeThis::DefaultAAFSimilarity

Inherits:

Object

• Object
• ActsAsFerret::MoreLikeThis::DefaultAAFSimilarity

show all

Defined in:

lib/acts_as_ferret/more_like_this.rb

Instance Method Summary (collapse)

• - (Object) idf(doc_freq, num_docs)

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# File 'lib/acts_as_ferret/more_like_this.rb', line 201

def idf(doc_freq, num_docs)
  return 0.0 if num_docs == 0
  return Math.log(num_docs.to_f/(doc_freq+1)) + 1.0
end