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Infobrokering And Searching The Deep Web
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Infobrokering and Searching the Deep Web - the New Role of Employee of the Department of Medical Scientific Information. …

Infobrokering and Searching the Deep Web - the New Role of Employee of the Department of Medical Scientific Information.
Presentation from EAHIL Workshp Kraków 2007.

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  • 1. Infobrokering and Searching the Deep Web the New Role of Employee of the Department of Medical Scientific Information. Witold Kozakiewicz, Barbara Grala Main Library, Medical University of Łódź,Poland
  • 2. "The Librarian", a 1556 painting by Giuseppe Arcimboldo
  • 3. Information should be meaningful , valuable, adequate, complete, actual and reliable.
  • 4.  
  • 5.  
  • 6. Google is like box of chocolate....
  • 7.  
  • 8. Deep Web
    • The deep Web (or Deepnet , invisible Web or hidden Web ) refers to World Wide Web content that is not part of the surface Web indexed by search engines.
  • 9. Deep Web Pages
    • Dynamic content - dynamic pages which are returned in response to a submitted query or accessed only through a form (especially if open-domain input elements e.g. text fields are used; such fields are hard to navigate without domain knowledge).
    • Unlinked content - pages which are not linked to by other pages, which may prevent Web crawling programs from accessing the content. This content is referred to as pages without backlinks (or inlinks).
    • Private Web - sites that require registration and login (password-protected resources).
    • Contextual Web - pages with content varying for different access contexts (e.g. ranges of client IP addresses or previous navigation sequence).
    • Limited access content - sites that limit access to their pages in a technical way (e.g., using the Robots Exclusion Standard, CAPTCHAs or pragma:no-cache/cache-control:no-cache HTTP headers), prohibiting search engines from browsing them and creating cached copies.
    • Scripted content - pages that are only accessible through links produced by JavaScript as well as content dynamically downloaded from Web servers via Flash or AJAX solutions.
    • Non-HTML/text content - textual content encoded in multimedia (image or video) files or specific file formats not handled by search engines.
    Source: Wikipedia
  • 10. Deep Web databases Source: Bin He, Mitesh Patel, Zhen Zhang, Kevin Chen-Chuan Chang. Accessing the Deep Web http://doi.acm.org/10.1145/1230819.1241670
  • 11. How to improve searching process?
  • 12.   try to use abilities of search engines, use more complex questions with Boolean operators, keywords. Use advanced search option or search engine suggestions
  • 13. try specialized services like Google Scholar, Google Books, MS Live Search Academic, Yahoo Search Subscriptions
  • 14.   i f you are looking for specific file types, try dedicated search engines like Picsearch, or Yahoo Podcast Search;
  • 15. try metasearch engines like friskr.com, dogpile.com, clusty.com, mamma.com turbo10.com ;
  • 16. use specialized web services and database search engines PubMed, Medic8, WebMD, MammaHealth
  • 17. use subject gateways – an online service that provides links to numerous other sites or documents on the Internet. (In tute , Scout Archives, BUBL Infomine )
  • 18. try to search open access journals or repositories like DOAJ, OAIster;
  • 19.   try to use find the specific database using CompletePlanet or Geniusfind ;
  • 20. too many! too complicated!
  • 21. The role of Librarian
    • Help user to find the information
    • Choose proper search tools.
    • Prepare the tool-box
    • Teach how to use it.
  • 22.  
  • 23. Thank You.