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    XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • Classic Systems

      • Knowledge acquisition problem
      • Slow adoption
      • Relatively complex conceptually
      • Wide domain coverage
      • Complex implementation (limited application)

    • Motivation : "Simple" Systems

      • e.g. OPML, XML-based structured data
      • Easy implementation
      • Rapid adoption
      • Simple conceptually
      • Narrow domain coverage
      • Simple implementation (limited application)

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • XHTML Outlines

      • Where? Right here!
      • Simple Hierarchical Structures
      • Simple Conceptually
      • Familiar view
      • Convenient viewer (browser)
      • Easy to author in XHTML
      • Easy to style using CSS
      • Easy to make dynamic using Javascript
      • XSLT allows format alchemy

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • W6
    • http://purl.org/ibis/w6

    • "Question Garland" OWL Ontology

      • W6 Facets

        • Who? ==> Agent (~> FOAF)
        • What? ==> Object (~> DC)
        • Why? ==> Cause (~> OWL-S?)
        • When? ==> Time (~> iCal/RDF)
        • Where? ==> Location (~> Geo)
        • How? ==> Process (~> OWL-S?)
      • Simple Conceptually
      • Easy to express in XHTML

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • RDF from XOW
    • Loops OK (URIs in link elements)
    • bnodes OK? - maybe

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • W6 and Friends

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • --think
    • we know the type of the thing at the end of the property
    • facets - Indian whatsisname

    • W6 Facets - disjoint

      • w6:who rdfs:range w6:Agent
      • w6:what rdfs:range w6:Object
      • w6:why rdfs:range w6:Cause
      • w6:when rdfs:range w6:Time
      • w6:where rdfs:range w6:Location
      • w6:how rdfs:range w6:Process

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • RDQL

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • Currently:
    • HTML is available (XHTML)
    • XML is available (XHTML)
    • RDF is available (RDF/XML)
    • Slides
    • Bookmarks

    • It's throwaway!

      • Simple mappings : XHTML <=> RDF
      • relatively easy to define
      • e.g. CSS @class = rdfs:Class
      • add new values to XHTML doc
      • tweak the XSLT
      • check the output!
    • Easy enough to be domain/task-specific

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • Does it work?
    • Is it useful?
    • Need more data!
    • Is the overall approach useful?
    • RDF to XHTML
    • programming API?
    • XSLT? Snail!

    • XOW

  • XOW - XHTML Outlines and the W6 Vocabulary

    • blah blah

    • SemText

    • Simple Conceptually
    • Easy to express in XHTML