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.

   • 2019, Hobson Lane, Cole Howard, Hannes Max Hapke, Natural Language Processing In Action […] , Shelter Island: Manning, →ISBN:

     Inverse document frequency, or IDF, is your window through Zipf in topic analysis.

Derived terms

• TF-IDF

Proper noun

IDF

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

   Synonym: Tsahal

   • 2011 September, Álvaro Uribe, Joseph Ciechanover, and Süleyman Özdem Sanberk, “The Use of Force on the Mavi Marmara”, in Sir Geoffrey Palmer, Report of the Secretary-General's Panel of Inquiry on the 31 May 2010 Flotilla Incident‎^[1], page 57:

     Firearms were taken from IDF personnel and passengers disabled at least one by removing the ammunition from it.

   • 2023 October 9, Ruth Michaelson, Ben Doherty, “Israel ‘going on the offensive’ after retaking territories overrun by Hamas”, in The Guardian‎^[2], →ISSN, archived from the original on 20 January 2025:

     The IDF spokesperson provided no comment on whether it had halted the practice, or the reported use of white phosphorus in Gaza, a densely populated area and home to more than 2 million people.

   • 2025 June 30, Bob Vylan, quotee, Bob Vylan chants "death to the IDF"‎^[3], Islam Channel:

     Alright, but have you heard this one though? Death, death to the IDF!

Translations

Israel Defense Forces

• Arabic: الْجَيْش الْإِسْرَائِيلِيّ m (al-jayš al-ʔisrāʔīliyy), الْجَيْش الدِّفَاع الْإِسْرَائِيلِيّ m (al-jayš ad-difāʕ al-ʔisrāʔīliyy)
• Chinese:

  Mandarin: 以色列國防軍 / 以色列国防军 (Yǐsélié guófángjūn), 以軍 / 以军 (zh) (Yǐjūn)

• French: Tsahal (fr) m, ADI
• German: Zahal m
• Hebrew: צה״ל m (tsáhal), צְבָא הֲגָנָה לְיִשְׂרָאֵל m (ts'vá haganá l'yisra'él)
• Russian: ЦАХА́Л (ru) m (CAXÁL), ЦА́ХАЛ (ru) m (CÁXAL)
• Spanish: FDI f pl
• Vietnamese: Lực lượng Phòng vệ I-xra-en

Anagrams

• DFI, DIF, FDI, Fid., dif, fid

French

Proper noun

IDF f

1. (geography) initialism of Île-de-France