Information Retrieval: Glossary
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Note: the content of this post is mainly notes taken from professor Stefano Mizzaro’s lessons on (Web) Information Retrieval at Uniud.
Common terms
These terms are used in different topics of IR and it is useful to define them before diving specifically into a topic:
-
: documentdj
N
: number of documents in the collectionIndex term
: if the term is in the indext
: number of terms in the index-
: keyword, a term in the indexki
K
: set of keywords-
: weight of ki in djwi,j