Presentation on theme: "The Deep Web & A Quick Review of CCOL James Backer, Ph.D. Cambridge College."— Presentation transcript:
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 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 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
Each Data Base has unique, but similar structure: Explore!
Other Databases in CCOL Electric Library ERIC E*Subscribe PsycARTICLES Wilson Select Plus Article First CINAHL ERIC GPO MEDLINE PapersFirst ProceedingsFirst WorldCat
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 http://www.brightplanet.com/deepcontent/t utorials/DeepWeb/index.asp Permission requested and received for all non-Cambridge College images.