dctagging: Encoding DC metadata using  Structured Tags DCMI Social Tagging Community DC-2007: Application Profiles: Theory...
dctagging: DC metadata using Structured Tags <ul><li>Context and motivation </li></ul><ul><li>Structured tagging </li></ul...
Context & Motivation
 
Context and motivation <ul><li>Tagging indicates some undefined relationship between the subject resource and the tag </li...
Structured Tagging
Structured Tagging <ul><li>Use of tag as “multi-part” entity </li></ul><ul><ul><li>e.g. tag as key-value pair </li></ul></...
Structured Tagging <ul><li>dctagging </li></ul><ul><ul><li>DC metadata as prefixed key-value pairs in tags </li></ul></ul>...
 
 
dctagging & DCAM
dctagging and the DCMI Abstract Model <ul><li>Need to decide on DCAM interpretation </li></ul><ul><li>Triple tag = prefixe...
Flickr machine tags
Flickr machine tagging <ul><li>del.icio.us has no built-in support for triple tagging </li></ul><ul><li>Can’t do e.g. </li...
Expressing the Scholarly Works (Eprints)  DC Application Profile using the DSP wiki syntax <ul><li>Title slide photo of Si...
Expressing the Scholarly Works (Eprints)  DC Application Profile using the DSP wiki syntax DC-2007: Application Profiles: ...
Upcoming SlideShare
Loading in...5
×

dctagging: Encoding DC metadata using Structured Tags

2,323

Published on

Short presentation to DCMI Social Tagging Community session at DC-2007, Singapore, 2007-08-30.

Published in: Sports
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
2,323
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
42
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • dctagging: Encoding DC metadata using Structured Tags

    1. 1. dctagging: Encoding DC metadata using Structured Tags DCMI Social Tagging Community DC-2007: Application Profiles: Theory and Practice, Singapore
    2. 2. dctagging: DC metadata using Structured Tags <ul><li>Context and motivation </li></ul><ul><li>Structured tagging </li></ul><ul><ul><li>geotagging </li></ul></ul><ul><ul><li>dctagging </li></ul></ul><ul><li>dctagging and DCAM </li></ul><ul><li>Flickr machine tags </li></ul>
    3. 3. Context & Motivation
    4. 5. Context and motivation <ul><li>Tagging indicates some undefined relationship between the subject resource and the tag </li></ul><ul><li>Tag may be indicator of </li></ul><ul><ul><li>topic/”about-ness” e.g. “SecondLife”, “openAccess” </li></ul></ul><ul><ul><li>genre/”type” e.g. “tutorial” </li></ul></ul><ul><ul><li>status e.g. “toRead”, “possibleBlogPost” </li></ul></ul><ul><ul><li>provenance/publisher e.g. “DCMI”, “JISC” </li></ul></ul><ul><ul><li>creator e.g. “Berners-LeeTim”, “BakerMark” </li></ul></ul><ul><li>How do I distinguish resources about TBL from resources created by TBL? </li></ul>
    5. 6. Structured Tagging
    6. 7. Structured Tagging <ul><li>Use of tag as “multi-part” entity </li></ul><ul><ul><li>e.g. tag as key-value pair </li></ul></ul><ul><li>“ Triple tagging” </li></ul><ul><ul><li>three parts: prefix, key, value </li></ul></ul><ul><ul><li>interpretation as triple: subject URI, predicate/property URI, literal </li></ul></ul><ul><li>Geotagging </li></ul><ul><ul><li>geo:lat=51.4989 </li></ul></ul><ul><ul><li>geo:lon=-0.1786 </li></ul></ul><ul><ul><li>geotagged </li></ul></ul><ul><ul><li>Widely used in Flickr for photograph locations </li></ul></ul><ul><ul><li>See http:// geobloggers.com / </li></ul></ul>
    7. 8. Structured Tagging <ul><li>dctagging </li></ul><ul><ul><li>DC metadata as prefixed key-value pairs in tags </li></ul></ul><ul><ul><li>dc:creator=Berners-LeeTim </li></ul></ul><ul><ul><li>dc:publisher=UKOLN </li></ul></ul><ul><ul><li>dctagged </li></ul></ul><ul><li>See </li></ul><ul><ul><li>http://efoundations.typepad.com/efoundations/2006/10/dctagged.html </li></ul></ul>
    8. 11. dctagging & DCAM
    9. 12. dctagging and the DCMI Abstract Model <ul><li>Need to decide on DCAM interpretation </li></ul><ul><li>Triple tag = prefixed/key/value </li></ul><ul><li>“ dctagged” as implicit “namespace declaration” </li></ul><ul><li>Note: no way to distinguish between </li></ul><ul><ul><li>literal value surrogate and non-literal value surrogate </li></ul></ul><ul><li>Propose </li></ul><ul><ul><li>Tag -> DCAM Statement </li></ul></ul><ul><ul><li>Prefix/key -> DCAM Property URI </li></ul></ul><ul><ul><li>Value -> DCAM Literal Value Surrogate Value String </li></ul></ul><ul><li>i.e. literal values only </li></ul>
    10. 13. Flickr machine tags
    11. 14. Flickr machine tagging <ul><li>del.icio.us has no built-in support for triple tagging </li></ul><ul><li>Can’t do e.g. </li></ul><ul><ul><li>&quot;find all items for which the value of the dc:creator property is a literal that begins with 'Powell'&quot; or </li></ul></ul><ul><ul><li>&quot;find all items related (by any property) to the literal 'PowellAndy'“ </li></ul></ul><ul><li>Flickr support for “machine tags” </li></ul><ul><ul><li>Uses namespacing convention borrowed from XML Namespaces </li></ul></ul><ul><ul><li>xmlns:dc=http://purl.org/dc/elements/1.1/ </li></ul></ul><ul><ul><li>Flickr API supports queries using structured tags </li></ul></ul><ul><ul><li>http://www.flickr.com/groups/api/discuss/72157594497877875/ </li></ul></ul><ul><li>See also Dave Beckett’s Flickcurl </li></ul><ul><ul><li>http:// librdf.org/flickcurl / </li></ul></ul>
    12. 15. Expressing the Scholarly Works (Eprints) DC Application Profile using the DSP wiki syntax <ul><li>Title slide photo of Singapore Orchid Gardens by Flickr user Andries3 See http://www.flickr.com/photos/andriesoudshoorn/458678695/ Made available under CC Attribution-NonCommercial 2.0 license </li></ul>
    13. 16. Expressing the Scholarly Works (Eprints) DC Application Profile using the DSP wiki syntax DC-2007: Application Profiles: Theory and Practice, Singapore
    1. A particular slide catching your eye?

      Clipping is a handy way to collect important slides you want to go back to later.

    ×