Document (#35857)

Author
Cosijn, E.
Title
Relevance judgments and measurements
Source
Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
Imprint
London : Taylor & Francis
Year
2009
Pages
S.xx-xx
Abstract
Users intuitively know which documents are relevant when they see them. Formal relevance assessment, however, is a complex issue. In this entry relevance assessment are described both from a human perspective and a systems perspective. Humans judge relevance in terms of the relation between the documents retrieved and the way in which these documents are understood and used. This is a subjective and personal judgment and is called user relevance. Systems compute a function between the query and the document features that the systems builders believe will cause documents to be ranked by the likelihood that a user will find the documents relevant. This is an objective measurement of relevance in terms of relations between the query and the documents retrieved-this is called system relevance (or sometimes similarity).
Footnote
Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.

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