
For this blog entry I thought I would share some useful information with my classmates. One of my professors taught my class about the DEEP Web and the many benefits that it holds. So you might be asking yourself:
What is the DEEP Web?
The DEEP Web contains web resources that lie below the surface web.
* Surface web = web that is indexed by search engines and subject directories
* Most of DEEP Web is in searchable databases
DEEP web Stats:
* Deep Web contains 7,500 terabytes of information (19 terabytes of information in the surface web)
* Deep Web contains nearly 550 billion individual documents (1 billion in the surface web)
* A study at the NEC Research Institute (2001)published that Internet searchers are therefore searching only 0.03% of the pages available to them today.
When to use the DEEP Web:
* Directories and Portals when you:
- have a broad topic
- want selected, evaluated, and annotated collections
- prefer quality over quantity
* Invisible or Deep Web (search sites and databases) when you:
- are looking for information that is likely in a database
- are looking for information that dynamically changes in content
* Search engines (general and specialized) when you:
- have a narrow topic
- want to take advantage of the newer retrieval technologies
Here are some "Hidden" databases that you as educators or future educators might find useful when teaching:
* Educator's Reference Desk
* Nature Serve Explorer
* FindArticles
* Complete Planet