IDF

English

Noun

IDF (plural IDFs)

  1. (statistics) Initialism of inverse document frequency.
    • 2011, Matthew Russell, Mining the Social Web, page 215:
      A finer point to observe is that the sample implementation provided in Example 7-4 adjusts the IDF score by adding a value of 1.0 to the logarithm calculation, for the purposes of illustration and because we're dealing with a trivial document set.
    • 2014, Manas A. Pathak, Beginning Data Science with R, page 147:
      The idea behind inverse document frequency (IDF) is that all words in the corpus are not equally important.

Proper noun

IDF

  1. (military) Initialism of Iceland Defense Force.
  2. (military) Initialism of Irish Defence Forces.
  3. (military) Initialism of Israel Defense Forces.

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