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The Web is critical not merely to the digital revolution but to our continued prosperity—and even our liberty. Like democracy itself, it needs defending 

  “The Web evolved into a powerful, ubiquitous tool because it was built on egalitarian principles and because thousands of individuals, universities and companies have worked, both independently and together as part of the World Wide Web Consortium, to expand its capabilities based on those principles.

    The Web as we know it, however, is being threatened in different ways. Some of its most successful inhabitants have begun to chip away at its principles. Large social-networking sites are walling off information posted by their users from the rest of the Web. Wireless Internet providers are being tempted to slow traffic to sites with which they have not made deals. Governments—totalitarian and democratic alike—are monitoring people’s online habits, endangering important human rights.

    If we, the Web’s users, allow these and other trends to proceed unchecked, the Web could be broken into fragmented islands. We could lose the freedom to connect with whichever Web sites we want. The ill effects could extend to smartphones and pads, which are also portals to the extensive information that the Web provides.

    Why should you care? Because the Web is yours. It is a public resource on which you, your business, your community and your government depend. The Web is also vital to democracy, a communications channel that makes possible a continuous worldwide conversation. The Web is now more critical to free speech than any other medium. It brings principles established in the U.S. Constitution, the British Magna Carta and other important documents into the network age: freedom from being snooped on, filtered, censored and disconnected.”

Tim Berners-Lee (in Scientific American)

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Web & Semantic Web

The Web (World Wide Web)

  • The World Wide Web  is a web of documents; A global repository of linked documents (with HTML hyper-links acting as the glue).
  • Documents that are well presented for humans to glean information from.
  • One can navigate the web, hopping from one document to another transparently irrespective of which computer the documents are stored on.
  • Web is a realization of “It isn’t the computers, but the documents which are interesting”.
  • The World Wide Web is Document centric.

The Semantic Web

  • The Semantic Web is a web of data; A Web scale database (RDF defining the structure of data)
  • Data that is structured enough  to be processed by machines/software-agents (which in-turn may provide information of better quality for human consumption)
  • Graphs of data which can be processed to infer non explicit knowledge.
  • Semantic Web is a realization of “It isn’t the Documents but the things they are about that are interesting”
  • The Semantic web is Data centric.