IDF says fighting is ongoing in south, saying it ‘could be a 9/11 and a Pearl Harbour wrapped into one’ as Supernova festival-goers describe attack[.]

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.

The idea behind inverse document frequency (IDF) is that all words in the corpus are not equally important.

Idf

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Noun

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