1. iceTag ontology
modeling tags
as RDF named graphs
Freddy Limpens, David Laniado
Alexandre Monnin, Fabien Gandon

2. VoCamp Nice 2009

3. what is a tag?
received wisdom says "it denotes a concept"

4. not quite!
examples…
☺

5. a blank (inscribable) space
on a material device
tags:
a blank (inscribable) space
on an informational network

6. a label and a couple of URIs
a reference to a resource (label)
an access to its representation and its tags (URIs)
http://www.flickr.com/2327219507/
tags:

7. current models assign a fixed form to tags but
tags take on manifold forms

8. model different tag dimensions
subject, sign, relation, …
capture different tag usages
comment, sort, diffuse, describe, rate, ...
bridge existing models
SCOT, MOAT, Tag Ontology, Nepomuk, …

9. named graphs [Carroll et al. 2005]
to embody social acts, communicate assertional intent

10. “nature”
(1) (2) (3)
at least
three parts in a tag

11. “nature”
(1) (2) (3)
a tag is
a link between a resource and a sign

12. “nature”
(1) (2) (3)
picture shows
“nature”
place located
“england”
england”
editing makes me
☺
at least
three degrees of liberty

13. “nature”
(1)
identify the subject
IRW: physical entity resource, web resource, conceptual resource…
Halpin & Presutti (2009)

14. “nature”
(2)
sub-properties of hasSign
extension of Golder & Huberman (2006), Sen et al.(2006)

15. “nature”
(3)
different signs
symbol (text, URI), icon,…

16. http://.../tag23
“nature”
tag actions
captured/encapsulated in a named graph
Carroll et al. (2005)

17. sioc:has_creator
http://.../tag23 #buttersg88
dc:date
11/03/2008
“nature” sioc:container
http://www.flickr.com
describe the tag action
as any other resource

18. rdf:type
http://.../tag23 nt:ManualTag
“nature”
even type the tag action
sioc:Item rdfg:Graph
TagAction
ManualTagAction AutoTagAction MachineTagAction IndividualTagAction CollectiveTagAction

19. http://.../tag23 …
scot:hasTag #nature
choose anyCommonTag, Newman's Tag Ontology…
SCOT, MOAT, IRW, NAO,
existing model

20. RDF source declaration
1. <irw:WebResource rdf:about ='http://www.yesand.com/'
2. cos:graph='http://mysocialsi.te/tag#7182904'>
3. <nicetag:isAbout>improvisation</nicetag:isAbout>
4. </irw:WebResource>
5. <nicetag:ManualTagAction
rdf:about ='http://mysocialsi.te/tag #7182904'>
6. <dc:creator>Fabien Gandon</dc:creator>
7. <dc:date>2009-10-07T19:20:30.45+01:00</dc:date>
8. </nicetag:ManualTag>

21. SPARQL all the manual tags
1. SELECT ?t ?a ?g WHERE {
2. GRAPH ? tag { ?t ?a ?g }
3. ?tag rdf:type nicetag:ManualTagAction }

22. e. g.

23. e. g.

24. links !!!

25. summary
tag actions as typed & named graphs + ontology
rdf:type
http://... nt:TagAction
…
resource RELATION
sign …
…
…

26. http://ns.inria.fr/nicetag/2009/09/25/voc#
n i c e dereferenciable
t a g namespace