1. An Open Data adapter with semantic output
Miel Vander Sande Rik Van de Walle
Pieter Colpaert, Davy Van Deursen, Erik Mannens,

2. Free Public
economic participation
value
Transparency

3. Open Data...
Photograph: © www.cafepress.com

4. Open Data...
It’s like me
in the
morning
More caffeine
more value
Photograph: © www.cafepress.com

5. Open Data...
It’s like a
cup of coffee
Best when it
is still hot
Photograph: © www.cafepress.com

6. Taking the first sips
The first time opening data
It usually is...
with little experience
careful
simple and fast
limited
Keep the bar low

7. Taking the first sips
The data
mostly
reaches
second or
third star
Low caffeine level
Plain format
Quite cold
Photograph: © www.cafepress.com
Not dynamic

9. RESTful
POST DELETE PUT GET
Formatter
Package A XML JSON KML ...
Resource 1
Resource 2
Resource 3
Generic PHP object
Package B
Resource 1
Resource 2 CSV JSON XLS ...
Resource 3
Strategy

10. RESTful
Hostname Package Resource Filter

11. Advanced drinker
Output
four star data
While sticking to the
philosophy
Photograph: © www.cafepress.com

12. Serialize
MAP
IDENTIFY
Producing RDF

13. IDENTIFY Identifying things,
not only representations
©Steven Ruffles: http://www.geograph.org.uk/profile/43192

14. IDENTIFY HTTP Range-14
Non Information Resource
GET http://host/package/resource
303 Redirect
http://host/package/resource.about
Information Resource
GET http://host/package/resource.about
200 OK
©Steven Ruffles: http://www.geograph.org.uk/profile/43192

15. Mapping data object
to ontology members
MAP
name;lastname;email
Miel;VanderSande;miel@irail.be
Pieter;Colpaert;pieter@irail.be
http://local/TDT/irail/developers/0
name lastname email
“Miel” “VanderSande” “miel@irail.be”
Ontology mapping
rdf:type
“foaf:Person” http://local/TDT/irail/developers/0
foaf:name foaf:family_name foaf:mbox
“Miel” “VanderSande” “miel@irail.be”

16. An own structure and mapping
to describe data
Ontology, MAP
@prefix owl:<http://www.w3.org/2002/07/owl#>.
@prefix rdf:<http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix foaf:<http://xmlns.com/foaf/0.1/>.
@base <http://datatank.demo.ibbt.be/TDTInfo/Ontology/>.
<developers> a owl:Class .
<developers/stdClass> a owl:Class;
owl:equivalentClass foaf:Person .
<developers/stdClass/name> a rdf:Property;
owl:equivalentProperty foaf:name .
<developers/stdClass/lastname> a rdf:Property;
owl:equivalentProperty foaf:lastname .
<developers/stdClass/email> a rdf:Property;
owl:equivalentProperty foaf:mbox .

17. Collaborative mapping,
making the ontology accesible through API
MAP
POST DELETE PUT GET
http://[host]/TDTInfo/Ontology/[package]/[resource]

18. Recursive analysis
to derive URIs and assemble triples
RDFOutput Ontology Processor
Instance URI Generic Data Object Class path
developers array developers
developers
0 stdClass
developers/0 developers/stdClass
analysis
developers/0/name name “Miel”
developers/stdClass/name
developers/0/lastname lastname “Vander Sande”
developers/stdClass/lastname
developers/0/email email “miel@irail.be” developers/stdClass/email
Resource URI Mapped Class/Property
(developers/0) (foaf:Person)
RDF Triple
(<developers/0> a foaf:Person)
Serialize

19. On-the-fly publishing of OGDWien data as RDF
Demo

20. Miel Vander Sande
@miel_vds
miel.vandersande@ugent.be
Thank you!
Questions?
datatank.demo.ibbt.be
www.thedatatank.com