Document Frequency

The document frequency is a useful statistic computed for individual words or terms in the context of text mining. It denotes the number of documents in a collection of documents in which the respective word or term was found.

For more information, see Manning and Schütze (2002) and Miner, G.; Elder, J., Hill, T., Nisbet, R., Delen, D., Fast, A. (2012); see also the STATISTICA Text Mining and Document Retrieval Introductory Overview.