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Meta-Search
Engines
Meta-search engines (also know as multi-threaded engines) search several major engines at once. Meta-search engines do not crawl the Web or maintain a database of web pages. Instead, they act as a middle agent, passing on the query to the major engines and then returning the results. Because the major search engines often produce very different results, meta-search engines provide a quick way to determine which engines are retrieving the best match for your information need.
Because search engines vary in ability to interpret complex searches, meta-search engines work best with simple searches.
Click the links below for practice exercises.
Dogpile searches 8 search engines and subject directories as well as newsgroups, business news, and newswires. Dogpile supports full Boolean logic and phrase searching.
Vivisimo clusters results from 8 search engines and subject directories into convenient topic categories. Use implied Boolean logic (+/-) and phrase searching.
At MetaCrawler, submit queries to 7 search engines and subject directories. Use implied Boolean logic (+/-) and phrase searching.
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Copyright © 1999 - 2004 by Debbie Flanagan, Fort Lauderdale, FL.
All rights reserved.
All rights reserved.