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Search Engine Marketing > Search Engine Marketing Tools > Search Term Glossary > Inverse Document Frequency - you are here
 

Inverse Document Frequency

 
 

Inverse document frequency - term used to help determine the position of a term in a vector space model.

idf = log ( total documents in database / documents containing the term )

 

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Search Engine Marketing > Search Engine Marketing Tools > Search Term Glossary > Inverse Document Frequency - you are here