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Introduction to Search Engines
The
Internet has tens of millions of sites at this point; growth is
exponential and bibliographic control does not exist. To find the
proverbial needle in this immense haystack (or tiny fly in the Web), you
may use two basic approaches: a search engine or a subject guide such as
Yahoo,
Snap,
LookSmart, and
Magellan. Subject guides are fine for browsing general topics, but
for specific information use a search engine. Your output can be greatly
improved by spending time learning the nuances of several search tools.
Their on-line help pages have in-depth information.
All search
engines do keyword searches against a database, but various factors
influence the results from each. Size of the database, frequency of
update, search capability and design, and speed may lead to amazingly
different results. Recent addition of new content, redesign and
partnership changes have fulfilled the mission of the new name: portals.
This name implies a starting point and central location for all uses of
the Web. We prepared these documents to help users understand the
differences between some of the most popular search engines.
There are
also metasearch sites or metacrawlers that send searches to several
search engines. Since metasearch engines do not allow for input of many
search variables, their best use is to find hits on obscure items or to
see if something is on the Internet. Some of the best-known ones are
Dogpile,
Mamma,
Metacrawler, and
SavvySearch.
Quick
Reviews (Courtesy Kansas City Public Library Web Site)
Click on a search engine name to go to that site. Click on "Our Review"
for a more detailed review.
AltaVista -
Our Review - Summary: one of the largest and most comprehensive
search engines available, it searches the entire HTML file.
Excite -
Our Review - Summary: concept searching is a strong feature for
narrowing down the search.
Google –
Our Review – Summary: Perhaps the largest search engine on the Web,
capable of searching 1,247,340,000 web pages.
HotBot -
Our Review - Summary: has some unique search features that
make this a
very useful search engine, including sorting results by date or media
type.
Lycos -
Our Review - Summary: one of the oldest search tools on the
Internet, but keeping up-to-date with a variety of result options
available.
For more
information on any of these search engines, see the help files located
on their sites.
See
also
Search Engine Showdown and
Search Engine Watch
and
their comparison of search engine reviews.
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