The World Wide Web

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The World Wide Web

• History
• Overview of Structure
• Overview of Search Tools

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History of the Web

• 1945 Vannevar Bush (As We May Think, Atlantic
  Monthly) the human mind operates by association

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History of the Web

• 1965 Ted Nelson proposed Literary Machines,
  computers that would allow writing and publishing
  of nonsequential text hypertext and the
  Xanadu Project all the worlds information
  hyperlinked together

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History of the Web

• Let me introduce the word "hypertext" to mean
  a body of written or pictorial material
  interconnected in such a complex way that it
  could not conveniently be presented or
  represented on paper. It may contain summaries,
  or maps of its contents and their interrelations
  it may contain annotations, additions and
  footnotes from scholars who have examined it. Let
  me suggest that such an object and system,
  properly designed and administered, could have
  great potential for education, increasing the
  student's range of choices, his sense of freedom,
  his motivation, and his intellectual grasp.
  Such a system could grow indefinitely, gradually
  including more and more of the world's written
  knowledge. T. Nelson, 1965.

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History of the Web

• 1970 no Web

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History of the Web

• 1970 no Web
• 1980 still no Webalthough Tim Berners-Lee
  wrote a program, ENQUIRE, that hyperlinked
  between local computers

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History of the Web

• 1970 no Web
• 1980 still no Webalthough Tim Berners-Lee
  wrote a program, ENQUIRE, that hyperlinked
  between local computers
• 1984 still no Web, but the mouse becomes
  mainstream in the Apple Macintosh, 15 years after
  Engelbart invents it!

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History of the Web

• 1989-90 Berners-Lee proposes that CERN create a
  global hypertext system

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History of the Web

• 1989-90 Berners-Lee proposes that CERN create a
  global hypertext system
• 1990 TBL writes first browser program, names it
  World Wide Web

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History of the Web

• 1989-90 Berners-Lee proposes that CERN create a
  global hypertext system
• 1990 TBL writes first browser program, names it
  World Wide Web
• 12/90 first access to Internet news articles
• 8/91 software released on the Internet

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History of the Web

• 1993 Mosaic browser for PC Web traffic
  measures 1 of traffic on NSFnet backbone
• Excite (AskJeeves) introduced
• 1994 Microsoft licenses technology from Spyglass
  to create Web browser (Explorer) for Windows 95
• 1994 Yahoo! Directory put online
• 1994/5 Java is created
• 1995 AOL, Compuserve provide Web access
• 1995 Ebay (then called Auctionweb) founded

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History of the Web

• 1996 Real Audio debuted
• 1997 Chat lines developed
• 1998 Google just starting
• 1999 MySpace created as file sharing service
• 2001 Wikipedia launched
• 2003 Apples iTunes music download service begins
• 2005 YouTube.com launches

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Web Sites
Figure WWW Growth                           
                                                  
                    
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Web Structure

• There is no right or wrong way to display the
  structure of the Web.

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Web Structure

• There is no right or wrong way to display the
  structure of the Web.
• But there is one fundamental difference between
  Internet and Web structures

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Web Structure

• There is no right or wrong way to display the
  structure of the Web.
• But there is one fundamental difference between
  Internet and Web structures
• Internet structure is controlled by wiring

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Web Structure

• There is no right or wrong way to display the
  structure of the Web.
• But there is one fundamental difference between
  Internet and Web structures
• Internet structure is controlled by wiring,
• which leads to the possibility of finding this
• http//www.shibumi.org/EotI

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Web Structure

• There is no right or wrong way to display the
  structure of the Web.
• But there is one fundamental difference between
  Internet and Web structures
• Internet structure is controlled by wiring

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Web Structure

• There is no right or wrong way to display the
  structure of the Web.
• But there is one fundamental difference between
  Internet and Web structures
• Internet structure is controlled by wiring
• Web structure is controlled by hyperlinks

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Web Structure

• Hyperlinks
• Hot links connecting content

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Web Structure

• So..
• .how do you get to that content?
• Search Tools and Engines

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Search Tools and Engines

• Archie (1990) searchable database of filenames
  via anonymous ftp
• Gopher (1991) indexed plain text documents
• Veronica Jughead (1991) searched the files
  stored in Gopher index systems.
• Search Engines (1993 and on)

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Search Tools and Engines

• Search Engines are searchable online database(s)
  containing Internet resources (Web pages). They
  have several parts
• search engine software
• spider software
• an index (database)
• relevancy algorithm (rules for ranking for
  display)

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Search Tools and Engines

• Search Directories organize indexed Web pages by
  subject. Subjects are defined by humans instead
  of software.

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Search Tools and Engines

• Are there right or wrong ways to search?
• More to come!