Inverse document frequency (IDF) | SEO Glossary of Terms

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SEO Glossary of Terms
A Glossary of Terms relating to search engine optimisation (seo)

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Inverse document frequency (IDF)	IDF or Inverse Document Frequency is vector space model term which is used when determining the position of a term within the model. This basically means that it is the measure of how rare a term is when it is compared to the other documents within the same grouping.

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