Semantic Web and the Social Web
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A very brief introduction to the semantic web (web 3.0) and how it relates to the social web. Includes a video of the progression from Web 1.0 to Web 2.0 to Web 3.0 by robin fay, ...

A very brief introduction to the semantic web (web 3.0) and how it relates to the social web. Includes a video of the progression from Web 1.0 to Web 2.0 to Web 3.0 by robin fay, georgiawebgurl@gmail.com

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Semantic Web and the Social Web Presentation Transcript

  • 1. Robin Fay, robinfay.net
  • 2. Semantic web and the social web Robin Fay, robinfay.net October 2009 Find me at robinfay.net, facebook, twitter, linkedin, youtube, blogger, slideshare, etc. Aka georgiawebgurl
  • 3. Semantic web and the social web
        • Brief introduction
          • All materials available at http://del.icio.us/georgiawebgurl/semantic_web_presentation
        • Semantic web
          • Introduction
          • A little terminology
          • Examples
        • Social media and the semantic web
        • Challenges of the semantic web
    Robin Fay, robinfay.net 2009/10
  • 4. Semantic web and the social web
      • Social media/social networking/social web
        • Focus is on providing a user centered experience
        • Content created by users
        • Metadata frequently created by users in the form of assigning rights (creative commons such as at flickr), assigning metadata (tags, description) and more.
        • read/write web
      • Semantic web, aka Web 3.0
        • Focus on data and harvesting
        • Machine driven; rules based
        • Relies on structure
        • Portal/personal web
        • Early early stages
    Robin Fay, robinfay.net October 2009
  • 5.  
  • 6. Semantic web and the social web
    • So:
    • Web 1.0 = we used the web as a tool
      • primarily html based; few database driven sites; little interactivity
    • Web 2.0 = we interacted, enhanced, and controlled our experience
      • Many database driven websites, search engines within websites, widgets, highly customizable
    • Web 3.0 = we teach it, it learns
    Robin Fay, robinfay.net 2009/10
  • 7. Semantic web and the social web
    • The web as we know it (and think of it) links together documents (html, pdf, dynamic documents created from databases, etc.)
    • The Semantic web links together data.
    Robin Fay, robinfay.net 2009/10
  • 8. Semantic web and the social web
    • At its core, the semantic web comprises:
      • a set of design principles,
      • collaborative working groups ,
      • and a variety of enabling technologies.
      • Some elements of the semantic web are expressed as prospective future possibilities that are yet to be implemented or realized
      • Other elements of the semantic web are expressed in formal specifications
      • (wikipedia, 2009)
    Robin Fay, robinfay.net 2009/10
  • 9. Semantic web and the social web
    • RDF = Resource Description Framework
    • RDFS = Resource Description Framework Schema
    • OWL = Web Ontology Language
    • URI = Uniform Resource Identifier
    Robin Fay, robinfay.net 2009/10 Many terms associated with the Semantic Web are used or based upon information architecture, database, and information science fields
  • 10. Semantic web and the social web
    • RDF = Resource Description Framework
      • is a general-purpose language for representing information in the Web (a metadata data model )
      • is a W3C specification
      • is a conceptual description
      • is based upon making statements about web resources (triplets)
      • More or less : XML
      • Think sentence structure :
        • subject – predicate(verb)-object
          • My dog eats dogfood.
    • Let’s look at some examples
    Robin Fay, robinfay.net 2009/10
  • 11. Semantic web and the social web Robin Fay, robinfay.net October 2009 RDF concept
  • 12. Semantic web and the social web W3C model Simple RDF concept marked up
  • 13. Semantic web and the social web
    • So, we have the framework, but how do we apply it?
    • RDFS = Resource Description Framework Schema
      • A schema is
        • outline : a schematic or preliminary plan
        • A structure described in a formal language supported by the database management system ; in a relational database [such as MySQL), the schema defines the tables, the fields in each table, and the relationships between fields and tables.
        • a description of the structure and rules a document must satisfy for an XML document type
        • http://tinyurl.com/yj442vr (define: schema -- google)
    Robin Fay, robinfay.net 2009/10
  • 14. Semantic web and the social web
    • Popular choices for schemas include
      • Creative Commons: embeds RDF into mp3s
      • FOAF (Friend of Friend) : address books, contact lists, etc.
      • MusicBrainz: music CD information
      • DC (Dublin Core): multi-format, cross domain
      • RDF Site Summary: anything with a RSS
      • Schemas are sometimes called vocabularies
      • There are many, many schemas….
    A couple of examples Robin Fay, robinfay.net 2009/10
  • 15. Semantic web and the social web Robin Fay, robinfay.net October 2009 FOAF
  • 16. Semantic web and the social web … okay so that doesn’t sound so bad …. But it can get even more defined… Robin Fay, robinfay.net 2009/10 Very Simple Dublin Core in RDF We can combine FOAF + DC
  • 17. Semantic web and the social web
    • OWL = Web Ontology Language
      • invented to link ontologies which are classification systems
      • Attempts to define objects and their relationships
      • Different “flavors”
      • “ interpreted as a set of "individuals" and a set of "property assertions" which relate these individuals to each other” (wikipedia 2009)
      • Not a requirement
    Robin Fay, robinfay.net October 2009
  • 18. Semantic web and the social web Robin Fay, robinfay.net 2009/10
  • 19. Semantic web and the social web It all fits together, though…. Being that this is data driven, we can query, using SPARQL, a standard query language. It all fits together except….
  • 20. Semantic web and the social web
    • Who is going to create all of this new data?
    Robin Fay, robinfay.net 2009/10
    • Libraries, museums, and other resources already have huge record sets of structured data for their resources.
    • Many social networking sites
    • (del.icio.us, flickr, etc.) create metadata.
  • 21. Semantic web and the social web
    • The social web is collaborative and a mix of human and machine derived data
    • For example, tags are assigned by humans, yet data about those tags is assigned by machines
    Robin Fay, robinfay.net October 2009 diagram source: http://web2.wsj2.com/
  • 22. Semantic web and the social web
    • Drupal (opensource content management system) is adding semantic web features ; Wordpress has a SIOC plugin
    • Dpbedia is project combining wikipedia and RDF
    • SIOC (Semantically –linked Online Communities) is the semantic web model for social media websites ; attempts to connect forums, blogs, & more
    • ..but can this happen? Really?
    Robin Fay, robinfay.net October 2009
  • 23. Semantic web and the social web
    • The social web/social media/social networking is about people. Its focus has been less on standards, controlled vocabularies, RULES…. After all, here comes everybody…
    • ..but that is not exactly true. In order for blog posts to display sequentially, in order for discussions to be threaded, there must be an underlying order – a structure -- rules.
    Robin Fay, robinfay.net 2009/10
  • 24. Semantic web and the social web
    • Much of the technology (databases, servers, etc.) already exists – at least for the initial stages of the semantic web.
    • A great deal of the criticism of the semantic web hinges on either artificial intelligence OR on human inability – in other words, the computers can’t learn and we won’t code correctly for the computers, either.
    Robin Fay, robinfay.net 2009/10
  • 25. Semantic web and the social web
    • In order for the semantic web to reach its potential:
    • We need smarter computers.
    Robin Fay, robinfay.net 2009/10
    • We need better web standards.
    • We need a better behind-the-scenes structure (RDF).
    • We need more built in metadata generation tools on social networking sites.
    • We’ll need better search engines
  • 26. Semantic web and the social web
    • Let’s look at a few semantic search engines
      • http://hakia.com/
      • http://www.exalead.com/search/
      • http://www.yr-bcn.es/demos/microsearch/
    Robin Fay, robinfay.net October 2009
  • 27. Semantic web and the social web
    • Questions? Thoughts?
    • Many many links @
    • http://del.icio.us/georgiawebgurl/semantic_web
    • Presentation also at slideshare.net/robinfay/
    Robin Fay, robinfay.net October 2009