Definitions[edit | edit source]

General[edit | edit source]

Precision is

the specificity (or exactness) of a value; typically, the number of decimal points used to express the fractional part of a number.[1]

Information retrieval[edit | edit source]

Precision is

a measure of the effectiveness of information retrieval and is often expressed as the ratio of relevant documents to the total number of documents retrieved in response to a specific search. For example, using a Web search engine, if a search retrieves 100 documents, but only 30 of them are truly relevant to the search, the precision would be 30 percent.[2]

Overview[edit | edit source]

As opposed to accuracy, precision does not indicate how close a measurement is to a true value.

References[edit | edit source]

See also[edit | edit source]

Community content is available under CC-BY-SA unless otherwise noted.