Definitions[]
General[]
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[]
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[]
As opposed to accuracy, precision does not indicate how close a measurement is to a true value.
References[]
- ↑ Georeferencing: The Geographic Associations of Information, Glossary, at 232.
- ↑ Youth, Pornography, and the Internet, Glossary, at 414.