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14 February 2013Invisible Web Super SearcherJennifer Klang, Head, Reference Services, U.S. Department of Interior
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INVISIBLE WEB SUPER SEARCHER
Super Searcher Hints For More Effective Results
Jennifer Klang – Head of Reference Services
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What Is It? Content that does not
get indexed or queried by search engines and is not retrievable by current-generation search engines.
Content that resides in searchable databases that produce dynamic results.
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Examples Professional online services Databases within web sites Information that requires a password to
retrieve Discussion forums and bulletin boards Sites or parts of sites that were unavailable
when the search engine crawled them (may also be recently added)
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More Examples… Pages or documents excluded due to search
engine policy decisions Sites that reside on an intranet or behind a
firewall Archives Many interactive tools Pages buried many levels down in a site Non-html format documents
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Deep Web Is Useful When…
Your normal search engines aren’t cutting it
You need an exact answer You need data/statistics High quality or authoritative results are
needed You know the subject well You want more current information You want to browse collections of
materials (images, etc.)
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Should I Use a Search Engine?
All-purpose tools. Best suited for taking paths where few
other people had tread before Information that few people have dealt
with before and is unlikely to be found in a directory
Expect higher retrieval numbers
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Should I Use a Directory/Portal?
Directories are a good starting point for researching things that often been dealt with before.
Directories yield less retrieved items / higher quality information.
Portals are a good source for up-to-date information that changes too rapidly for search engines to keep up
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When Should I Use Google?
Use Google when you know exactly what you are looking for.
When searching a term or word/phrase sequence that will appear on all results pages
When there are not many often-used synonyms or alternative terms
Dealing with information is public (not proprietary or confidential)
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Strategies for IW Searches Use search engines to get to helpful sites
Environmental Policy AND database Endangered Species AND database
Look at Individual sites to see how they are arranged
Look for statistical or topical lists Use the advanced search function to
search for databases Follow Professional Pubs and listservs
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Recommended Invisible Web Sites
Google Scholar Science.gov Internet Archive OAIster (OCLC) Mamma.com Complete Planet Ipl.org
InfoMine DeepDyve (S&T) Scirus (S&T) Hathi Trust
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Federal Government Resources Science.gov - Interagency Initiative – 17
Government Science Orgs. & 13 Federal Agencies
UScodeBeta.house.gov – New cite includes links and Pop. Names
FDSYS Thomas.loc.gov USA.gov NTIS.gov