precision(pri-sizh´&n) (n.) (1) When used in reference to search engines, the ability of the search engine to return only relevant documents in the search results instead of documents that may not have relevance. Words in a search query that have more than one meaning have a greater chance of returning results that are not relevant as the search engine can only guess what information the user is searching for. Precision often is expressed as a percentage and is measured by dividing the number of relevant documents produced in a search by the total number of resultant documents that the search query presented. For example, if 100 pages are found in a search and 85 of those pages are relevant then the search had 85% precision.
Floating-point numbers are often classified as single precision or double precision. A double-precision number uses twice as many bits as a single-precision value, so it can represent fractional quantities much more exactly.
Because nothing says "I Love You" Like an open source app. Read More »Guarding your Data against Cyber Attacks
In this new era of heightened stakes comes an increased need for a comprehensive security strategy. Let's take a look at how cyber-threats have... Read More »The Great Data Storage Debate: Is Tape Dead?
Tape clearly is on the decline. But remember, legacy systems can hang for a shockingly long time. Read More »
A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »Computer Architecture Study Guide
This Webopedia study guide describes the different parts of a computer system and their relations. Read More »Webopedia Polls
The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »