Rephrase the text shown in the brackets for clarity:

{With this DF metric, the frequency of a word is inversely related to its value, with uniqueness treated as a proxy for importance.

Given the large set of matches expected from the Ontology search, the DF metric was also used as a way to control the number of text labels to be considered. We achieved this by considering different threshold limits for the DF across the corpus: for any specific threshold limit, only words with DF scores below that threshold limit count as text labels for that document. The threshold limit considered ranged from 1\% (limiting to words occurring at most in two documents in the corpus) to 100\% (no limit on the frequency of occurrence), with 1\% arbitrarily selected as the baseline value. }
 Use some words in all caps in your response, but those all-caps words should appear at most 2 times.
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