Meta-Search Engines & Deep Web - CC

							    The Deep Web
          &
A Quick Review of CCOL
    James Backer, Ph.D.
     Cambridge College
   Searching the Surface Web


• Via search engines and meta-search engines




• Use of image granted by Brightplanet.com
  http://www.brightplanet.com/deepcontent/tutorials
  /DeepWeb/index.asp
              The Deep Web
• Internet resources that most spiders can’t get
  to:
   – Non-HTML material
   – Dynamic HTML
   – Library Catalogs
   – Databases
   – Discussion Groups and News Groups
   – Telnet
   – Others
        Why don’t Search Engines
         Get To the Deep Web?


• “Spiders” only search via hyperlinks, recording
  info about static HTML pages
   Deep Web vs. Surface Web
• Deep Web is approximately 500 times
  larger than the Surface Web
• Deep Web is estimated to be 3 times
  better in quality
• The Deep Web is growing much faster
  than the Surface Web
• 95% of the Deep Web is free, but users
  must first pass through the front pages
• Currently technology is being developed to
  systematically search the Deep Web
          How Can We Search
            the Deep Web?




• Use of image granted by Brightplanet.com
  http://www.brightplanet.com/deepcontent/tutorials
  /DeepWeb/index.asp
    Searching the Deep Web
• Manual Searches:
  – Go to URLs of databases
  – Join Discussion Lists and use archives
  – Etc.
• This can be very time consuming!
• Buy into commercial service
  – Cambridge College Online Library
• In future: Deep Web Search Engines
  – Brightplanet.com & others
Access CCOL via
CC’s Home Page:
       Username & Password
• Found on FC desktop:
  Library Conference

• Changes each term

• Don’t give this
  information out to non-CC
  people!
E-Global Library
First Time Users:
Now for the Data Bases:
Each Data Base has unique, but
   similar structure: Explore!
      Other Databases in CCOL
• Electric Library   • CINAHL
• ERIC               •   ERIC
  E*Subscribe        •   GPO
• PsycARTICLES       •   MEDLINE
                     •   PapersFirst
• Wilson Select
                     •   ProceedingsFirst
  Plus
                     •   WorldCat
• Article First
•
            But, why bother?
• Now we know how to use search engines to get
  WWW pages !!!

• Most academic institutions assume that simple
  Web pages are highly questionable, if not
  worthless.

• Remember, anyone can publish a Web page.
             CCOL Offers:
• Easy access to academic journals

• Some of the journals are refereed

• Many of them are full text
Have a Library Problem?
Ask an Online Librarian!
Have a Technical Problem?
  Contact Tech Support!
       Still Have Problems?
• If either the Online Librarian did not
  respond, or…..
• The tech support people did not respond…

• Please contact Maida Tilchen, the Project
  Manager for Library Services at
  Cambridge College. She is in the First
  Class e-mail Directory.
                Sources:
• Bergman, M. (2002). The Deep Web:
  Surfacing Hidden Value.
  http://www.brightplanet.com/deepcontent/t
  utorials/DeepWeb/index.asp

• Permission requested and received for all
  non-Cambridge College images.