Class: ActsAsFerret::MoreLikeThis::DefaultAAFSimilarity

Inherits:
Object
  • Object
show all
Defined in:
lib/more_like_this.rb

Instance Method Summary collapse

Instance Method Details

#idf(doc_freq, num_docs) ⇒ Object 



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# File 'lib/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