Deep web


Published on

Published in: Technology, Education
No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Deep web

  1. 1. Deep Web • The deep Web (also called Deepnet, the invisible Web, dark Web or the hidden Web) refers to World Wide Web content that is not part of the surface Web, which is indexed by standard search engines. • The deep Web is about 500 times bigger than the surface. • It was estimated that the deep Web contained approximately 7,500 terabytes of data and 550 billion individual documents.
  2. 2. Deep Web Contd. • Surface search results are based on “relevancy by popularity”, ranked by total “hits” by users’ simple search queries. • While search engines can “find” deep data, their coverage is often random and intermixed with less relevant (and too much) content. • To find exactly the content needed, a user must traverse through “all” content within each surface site (Google, MSN, etc.)
  3. 3. Federated Search Federated search is the simultaneous search of multiple online databases or web resources and is an emerging feature of automated, web-based library and information retrieval systems. It is also often referred to as a portal or a federated search engine.
  4. 4. Deep Web Collections • Use this link to search for other invisible web collections • US government databases • webLens- Academic resources (this site use university or academic information as its resources)
  5. 5. Search Engines • Turbo10: On Turbo10, you'll be able to search more than 800 deep web search engines at a time. • Business Research: This deep web search scours the business web. • Pipl: Pipl brings together profiles, public records, and documents to serve up relevant information about people. • GPOAccess: If you're looking for US government information, tap into this tool that searches multiple databases at a time. • Free Lunch: Through this database, you can get economic data for free.
  6. 6. Databases • Tap into these databases to access government information, business data, demographics, and beyond. • GPOAccess: If you're looking for US government information, tap into this tool that searches multiple databases at a time. • MedNets: This database makes medical information easily accessible for healthcare professionals. • The Labyrinth: This database from Georgetown offers resources relating to medieval studies.
  7. 7. Google No. Google Shortcut Finds Pages That Have… 1. how now * cow the words how now cow separated by one or more words 2. #...#(search within a number range) nokia phone $200…$300 3. safesearch: (exclude adult content) safesearch:breast cancer 4. related: (related pages) 5. book(search book text) book The Lord of the Rings 6. phonebook:(find a phone number) phonebook:Google CA 7. bphonebook: (find business phone bphonebook:Intel OR numbers) 8. rphonebook:(find residential phone rphonebook:Joe Smith Seattle WA numbers) 9. stocks:(get a stock quote) stocks:ncesa
  8. 8. Google Phone Number Search • first name (or first initial), last name, city (state is optional) • first name (or first initial), last name, state • first name (or first initial), last name, area code • first name (or first initial), last name, zip code • phone number, including area code Example
  9. 9. Free People Search with Phone Directories • Awarded Pc Magazine's Best of the Internet 2004; allows you to search for businesses, people, phone numbers, email addresses, and lots more. • - Search not only the white and yellow pages, but for professional profiles and alumni emails as well.
  10. 10. Related:
  11. 11. Residential Phonebook:
  12. 12. ~revenue -revenue
  13. 13. ~revenue
  14. 14. References 99 Resources to Research & Mine the Invisible Web life/99-resources-to/ 100 Useful Tips and Tools to Research the Deep Web tools-to-research-the-deep-web/
  15. 15. Interesting Videos on Deep Web For More Information Contact: INFOSERVE PVT LTD. 1ST FLOOR, 26 VAJIRA ROAD, COLOMBO 04 SRI LANKA EMAIL: INFO@ATHANDZ.COM WWW.ATHANDZ.COM