## What system of term weighting will be able to distinguish content value the most effectively?

- Term frequency (
**tf**)**–**A measure of the frequency with which a term appears in a document or query. - Inverse document frequency (
**idf**)**–**A collection-dependent measure that varies inversely with the number of documents to which a term is assigned. - Term discrimination – Term frequency multiplied by inverse document frequency, or
**tf x idf**. - Normalization factor – A formula which normalizes the term-weighting so that shorter documents, with potentially fewer document descriptors, are not more difficult to find than longer documents, with potentially more descriptors.

- Term frequency (