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ERIC Number: EJ661490
Record Type: Journal
Publication Date: 2003
Pages: N/A
Abstractor: N/A
Reference Count: N/A
ISSN: ISSN-0306-4573
An Information-Theoretic Perspective of Tf-idf Measures.
Aizawa, Akiko
Information Processing & Management, v39 n1 p45-65 Jan 2003
Presents a mathematical definition of the probability-weighted amount of information (PWI), a measure of term specificity in documents that is based on an information-theoretic view of retrieval events. Corresponds with the term frequency-inverse document frequency (tf-idf) measures that are used in information retrieval systems. (Author/LRW)
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A