Definition, Meaning & Synonyms
idf
noun
/ɪnˈvɜrs ˈdɒkʊmənt ˈfrɛkənsi/
Definition
Inverse Document Frequency
Examples
- In the context of vector space models, idf helps to weigh a term’s importance.
- The higher the idf, the more unique the term, making it more significant in that document.
- Researchers often use idf in information retrieval systems to improve search accuracy.
Meaning
A statistical measure used in information retrieval and text mining to evaluate how important a word is to a document in a collection or corpus.
Synonyms
- Term Weighting
- Document Frequency Indicator
