Go beyondgoogle

Go Beyond Google
How to Search the Deep Web
Lia Vella, Special Project Librarian
lia.vella@oit.edu

Question
What are some examples of information you have been unable to find using a search engine like Google?

What is the Deep Web?
Also called the hidden or invisible web, the deep web consists of content that cannot be found by standard search engines like Google.

How Much Information is Online?
graph from Netcraft web server survey: http://news.netcraft.com/archives/web_server_survey.html

Some Examples of Things that are Hard to Find with a Search Engine

What’s in the Deep Web?
UW Digital Libraries
Internal websites for companies or organizations
Articles in research databases
Blogs
Links on social bookmarking sites
UW Digital Libraries
Dynamic content (such as search results)
US government
Images, music, video
Full text articles and books

Where is the Deep Web?
Schools, universities, corporations
Intranets
Restricted/password protected sites
Database content
Photo credits here

Where Else is the Deep Web?
Non-webpage materials (such as pdf documents)
Non-text content, such as images
Content that changes often, such as posts on social websites and discussion boards

How Google & other search engines search
Google is like a fishing trawler, dragging a net over the top few hundred feet of the world-wide web.
Photo by Maciej Lewandowski
It is not designed to catch deep-web resources.
from Bergman, M. (2001). White Paper: The deep web: Surfacing hidden value. Journal of Electronic Publishing 7: 1. doi: 10.3998/3336451.0007.104

Use Special Google searches
Many of the alternative Google search pages are designed to look in deep web sources.
A visual representation of Google’s specialty searches can be found at: http://springfieldlibrary.wikispaces.com/Google+Search+Options

Google Advanced Search

How Can You find resources in the deep web? Use your library’s resources!
Free resources pages identified by OIT librarians:
http://www.oit.edu/libraries/web/selected-subject-pages
http://www.oit.edu/libraries/articles/free
Search the library catalogs
OIT Library: http://hedgehog.oit.edu/search
Summit/Worldcat: http://summit.worldcat.org/
OAIster: http://oaister.worldcat.org/
Find image at NOAA website

Try Specialty Search Engines
Specialized search engines
Surfwax: http://www.surfwax.com/
Hakia: http://www.hakia.com/
Complete Planet: http://aip.completeplanet.com
Internet Scout: http://scout.wisc.edu/index.php
Lists of specialty search engines
Lim, H. (2009). 100+ alternative search engines you should know. Message posted to http://www.hongkiat.com/.
Miller, A. (n.d.). 100 useful tips and tools to research the deep web. Article posted to http://www.online-college-blog.com.

Investigate Organizations That Specialize in your Topic
Some examples:
American Geological Institute
Eating Disorder Referral and Information Ctr
American Society of Civil Engineers
Society for Technical Communication
From Goode & Bean (1896), Oceanic Ichthyology. View it here.

Remember to evaluate the material you find!
One easy way to remember what to look for in a web source is the acronym CRAAP
C: Currency– is the information timely?
R: Relevance– does the information suit your needs?
A: Authority– who is responsible for this website?
A: Accuracy– are sources cited?
P: Purpose– why is the information there?
From Goode & Bean, Ocean Ichthyology. View it here

More reading and some recommended sites
He, B., et al. (2007). Accessing the deep web. Communications of the ACM 50:5, 95- 101. doi:10.1145/1230819.1241670
Perez, S. (2008, May 14). Digital Image Resources on the Deep Web. Article posted to http://www.readwriteweb.com.
Wright, A. (2009, February 23). Exploring a ‘Deep Web’ that Google can’t grasp. The New York Times. Retrieved from http://www.nytimes.com/2009/02/23/technology/internet/23search.html.
Online Resources
Online Tutorials: several tutorials on searching the internet for scholarly content, multi-media, and more.
http://www.internettutorials.net/
Internet Public Library: a directory of online resources selected by librarians, categorized by topic area.
http://www.ipl.org
Digital Resources from Libraries, Museums, and Archives: a list compiled by the Institute of Museum and Library Services.
http://imlsdcc.grainger.uiuc.edu/

Questions?
Lia Vella
lia.vella@oit.edu
Find this image at NASA

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