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Search Engines and Boolean Ops.

Search Engines and Boolean Ops. Quintin Lunsford. Search engines. Google Yahoo Bing Ask. Search Engines expln .

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Search Engines and Boolean Ops.

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  1. Search Engines and Boolean Ops. Quintin Lunsford

  2. Search engines • Google • Yahoo • Bing • Ask

  3. Search Engines expln. • Search engines are programs that search documents for specified keywords and returns a list of the documents where the keywords were found. A search engine is really a general class of programs, however, the term is often used to specifically describe systems like Google, Bing and Yahoo! Search that enable users to search for documents on the World Wide Web.

  4. Boolean Ops • Boolean operators define the relationships between words or groups of words. • AND Narrow search and retrieve records containing all of the words it separates. • OR Broaden search and retrieve records containing any of the words it separates. The | can be used instead of 'or' (e.g., 'mouse | mice | rat' is equivalent to 'mouse or mice or rat'). • NOT Narrow search and retrieve records that do not contain the term following it. • ( ) Group words or phrases when combining Boolean phrases and to show the order in which relationships should be considered: mouse or mice

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