A Short Tutorial to Semantic Media Wiki (SMW)
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A Short Tutorial to Semantic Media Wiki (SMW)

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  • Example for method 1.1: follow “Survivor” link in “Main Page”  “Survivor” Example for method 1.2: follow “ RealityTelevisionShow ” link in “Survivor”  “Category:RealityTelevisionShow” follow “Category” link in “Category:RealityTelevisionShow”  “Categories” Example for method 2.1: follow “Main Page” in navigation  “Main Page” Example for method 2.2: follow “what links here” in “Main Page”  no inlinks to “Main Page” follow “what links here” in “Survivor”

A Short Tutorial to Semantic Media Wiki (SMW) A Short Tutorial to Semantic Media Wiki (SMW) Presentation Transcript

  • A Short Tutorial to Semantic Media Wiki (SMW) [[date:: July 21, 2009 ]] At [[part of:: Web Science Summer Research Week ]] By [[has speaker:: Jie Bao ]] and [[has speaker:: Li Ding ]] [[Category:Tutorial]]
    • #1 What is SMW?
    • #2 Editing
    • #3 Browsing
    • #4 Using Semantics
    • #5 Example Apps
    • #6 Additional Resources
    Outline
  • #1: What is SMW?
    • An extension to MediaWiki – the wiki engine that powers Wikipedia
    • Allows semantic annotation
      • Category : a group of things
        • Student , Event, Talk
      • Property : relation between two things
        • “ A Short Tutorial to Semantic Media Wiki (SMW)” has speaker “Jie Bao”
        • SummerProgram2009 costs $950
  • SMW is
    • A wiki: simple, collaborative
    • Semantic Web in the small
    • A light-weight semantic database
    • A platform to build other apps
  • Exercise Wiki
    • http://tw.rpi.edu/portal/SummerProgram2009
    • (please create an account and log in)
    • #2: Editing
  • Create A New Page
    • Click the “red links”
    • How to get the red links?
      • Search “A new page” in search box, or
      • Add “[[A new page]]” on some existent page
  • Non-semantic syntax
    • Click “edit” tab to enter the editing page
    • Simple MediaWiki formatting syntax:
    Headings of different levels ==heading== ===level 1=== Bullet list * first * second Numbered list # one # two Link to another page on the wiki [[pagename]] Link to another page on the wiki, but show different text [[pagename|show_text]]
  • Semantic Annotation Syntax
    • Categories and properties are also wiki pages
      • Category:Talk
      • Property:date
    Description Syntax Example Assign a page to a category [[Category:categoryname]] [[ Category:Talk ]] Add a property (with value) to a page [[propertyname::value]] [[ date::July 21, 2009 ]] Add a property (with value) to a page, but show “show_value” [[propertyname::value|show_value]] [[ date::July 21, 2009|21st July ]]
  • Advanced Topics (not covered here)
    • Inline queries
    • Semantic templates and forms
    • Importing and exporting data
    • Graphic user interface (Halo extension)
    • Many more extensions…
    • More on http://semantic-mediawiki.org/wiki/Help:SMW_extensions
  • Exercise
    • Write something about yourself:
    • http://tw.rpi.edu/portal/SummerProgram2009
  • #3: Browsing
    • Methods for browsing the regular wiki
      • Similar to browsing a website
      • Some links specific to the wiki
        • “ what links here” in the toolbox sidebar
    • Methods for browsing the annotated data
      • Factbox
      • Property links to property pages
      • Category links to category pages
      • Semantic browsing
  • Browsing - Track changes
    • Track changes on the whole Wiki
      • use “ Recent changes ” in the navigation sidebar
    • Track changes on one wiki page
      • use the “ history ” tab
    • Track changes on pages related to one wiki page
      • Use the “ Related changes ” in the toolbox sidebar
    • Track semantic changes of triples (an extension)
      • Example: http://tw.rpi.edu/semhis
    • #4: Using Semantics
  • For End Users Improved Semantic Data Generation
    • Before
      • Use RDF syntax
      • Use Editor
    • After
      • From structured data
      • Use SMW syntax
      • Use Form
    <?xml version=&quot;1.0&quot;?> <rdf:RDF xmlns:rdf=&quot;http://www.w3.org/1999/02/22-rdf-syntax-ns#&quot; xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;> <rdf:Description rdf:about=&quot;http://www.w3.org/&quot;> <dc:title>World Wide Web Consortium</dc:title> </rdf:Description> </rdf:RDF>
  • For End Users Smart Data Propagation
    • Data can be easily propagated via semantic query, e.g. the project and publications are included from others’ input
    • Data can be propagated smartly using wiki-script based inference, e.g. “James A. Hendler” has an alias “Jim Hendler”
  • For Developers SMW is a ready-to-use semantic web workbench
  • For Developers SMW Enables Fast Prototyping
    • Learning Curve (before)
      • Web languages: HTML, CSS
      • Semantic web languages: RDF, RDFS, OWL, SPARQL,
      • Web tools: web server (apache, tomcat), database (mysql), languages (PHP, Javascript)
      • Semantic web tools: editor (protégé, swoop), triple store (sesame), ontology reasoners (pellet, racer), Programming API (jena),
    • Learning Curve (after)
      • Wiki syntax
      • Semantic wiki syntax and semantic form/template syntax
      • Web tools hidden by Wiki
      • Simplified SW tools via light-weight Wiki programming:
        • Online authoring
        • Triple store
        • Semantic query with simple RDFS reasoning
  • For Developers
    • SMW is a Web-based modeling tool
    • #5: Example Apps
  • Publication Repository http://tw.rpi.edu/wiki/Publication DBLP bibtex wiki markup
  • An Ontology Editor
    • Template based OWL meta modeling with form support
    • Controlled natural language rendering (Rabbit, ACE, Yayan)
    • Limited rule inference to enhance the native RDFS inference
    http://tw.rpi.edu/proj/cnl
  • RPI Campus Map
  • #6 Additional Resources
    • SMW site: http://semantic-mediawiki.org
    • A 1.5 hour video tutorial: http://videolectures.net/eswc08_vrandecic_sw/
    • SMW +  User Forum: http://smwforum.ontoprise.com/
    • Tetherless World Work on SMW http://tw.rpi.edu/wiki/Semantic_Portal_Wiki