Maximizing Online Information Retrieval: How Theological Librarians Can Best Access the Gnostic Areas of the Internet
Libby Peterek, M.S.Info.St.Division of Instructional Innovation and AssessmentThe University of Texas at Austin
Surface v. Deep Web
• Surface Web - estimated between 1% and 20% of Internet
• Deep Web - content commercial search engines can’t reach (i.e., Google and Yahoo)– Unindexed
Unindexed Web content
• Databases / dynamically generated content
• File types (Flash, php, etc.)• Institution sites• “Gated” content
– Require password / registration
Theological Librarianship
• Underserved user group• Specialized content
– Hidden– Database driven– Newly added
• Potential to add richness to research
Mining the Deep Web
• Deep Web search engines• Federated searching• RSS
Deep Web Search Engines
• Look like commercial engines• Utilize different algorithms• Vary in quality and result relevance• Many free, growing number fee-based
and subscription-based– You get what you pay for…
Deep Web Search Engines
• http://www.invisible-web.net• http://www.dipsie.com/ (later this year)• http://www.brightplanet.com
– The leader and most expensive– Mainly competitive intelligence
• http://www.profusion.com/
Deep Web Search Engines
Deep Web Search Engines
Deep Web Issues
• Deep Web search engines underdeveloped
• Many of the same issues as commercial engines– Wait for search engines to improve?
• Federated Searching• RSS
Federated Searching
• Programs written to connect catalogs and databases
• No need for same code• Specialized search
– Access to different information– Aggregated based on user preference– One simple interface
Federated Searching
• Theological library databases, listservs, and indexes– Different form of content management– Access to all the tools available
Sherlock
Indeed
Library Use
• New York State Library Pilot Project• http://www.nysl.nysed.gov/library/novel/pilot/
• University of Toronto & British Columbia– Endeavor ENCompass
• http://www.endinfosys.com/
• Library of Congress vendor list• http://www.loc.gov/catdir/lcpaig/portalproducts.
html
Federated Searching Issues
• Need access to databases– Owned or agreed
• Can be expensive– Divide cost among interested parties or
content holders
RSS
• Really Simple Syndication• Rich Site Summary• RDF Site Summary
• Comparable to personalized library “alerts”
RSS
• Application of eXtensible Markup Language (XML), using W3C’s Resource Description Framework (RDF)
• What does this mean?– Metadata meets hyperlinks– Automates tasks
How RSS is used
• Feeds combine metadata and links– “Syndicate (XML)” or
• Typical sites with RSS– News– Blogs
• Explosion of “bloggers” opens arena for valid material from a wide user base and links to relevant resources
UT & RSS
• UT Austin strongly considering campus-wide blogging initiative– Content management– Content sharing– Archive– RSS
Aggregating RSS Feeds
• Browsers– Mozilla Firefox (Mac & PC)– Safari (Mac)
• Aggregators / News Readers (full list)– NetNewsWire Lite (Mac)
• Email• Web
NetNewsWire Lite
How it works
• Library Jobs RSS feed from Chronicle of Higher Education– Blog– Organization site
• Elf– Library borrower RSS
Feedster
• RSS search engine• Generates a unique RSS feed for each
search to copy to an aggregator• Notifications each time your subject is
updated• The better your search terms, the better
your results
Feedster
Feedster
Why RSS at your library?
• Two-way information exchange– Information retrieval and dissemination
• For patrons and librarians– Filter information overload
• You designate the boundaries– Time sensitive
• Be notified first when something is posted in your area of interest
Online Content / Search Issues
• Information creation and migration speeds• Standards - or lack thereof• Competition v. collaboration
Looking forward
• Deep Web diminishing– XML– Commercial search engines
• Sophistication• File types
– Internet publishing increasing• More care about pages being indexed• Links
SourcesBergman, M. 2001. The Deep Web: Surfacing Hidden Value. Journal of Electronic
Publishing. http://www.press.umich.edu/jep/07-01/bergman.htmlBrightPlanet. Deep Web FAQs.
http://www.brightplanet.com/deepcontent/deep_web_faq.aspDevine, J. and Egger-Sider, F. 2004. Beyond Google:The Invisible Web in the
Academic Library. The Journal of Academic Librarianship. 30(4), 265-269.Olsen, S. 2004. Yahoo crawls deep into the Web. http://news.com.com/2100-1024-
5167931.html Smith, C. Invisible Web. http://www.libraryspot.com/features/invisibleweb.htmWired. 2005. Surfing the Deep Web.
http://www.wired.com/news/business/0,1367,67883,00.htmlUniversity at Albany. 2005. The Deep Web.
http://library.albany.edu/internet/deepweb.htmlWebster, P. 2004. Breaking Down Information Silos. Online. 30-34.Wright, A. 2004. In Search of the Deep Web. Salon.
http://www.salon.com/tech/feature/2004/03/09/deep_web/index_np.html
Recommended
