1. SHORT INTRODUCTION
TO THE RDF MODEL
BASED ON THE EDM
SOUNDS PROFILE
Nikolaos Simou

2. Introduction to RDF
 RDF stands for Resource Description
Framework.
 RDF is a standard for describing Web
resources.
 RDF can be used to describe content, in our
case Digitized Cultural Heritage Objects.

3. Introduction to RDF
 RDF identifies things using Web identifiers (URIs),
and describes resources with properties and
property values.
 Explanation of Resource, Property, and Property
value:
 A Resource is anything that can have a URI, such as
"http://mint-
projects.image.ntua.gr/data/sounds/10853"
 A Property is a Resource that has a title, such as
”dc:title” and a creator ”dc:creator"
 A Property value is the value of a Property, such as
“Johann Sebastian Bach" or
"http://dbpedia.org/resource/Johann_Sebastian_Bach
" (note that a property value can be another resource)

4. RDF Syntax
<edm:ProvidedCHO rdf:about="http://mint-
projects.image.ntua.gr/data/sounds/10853"/>
<dc:creator>Johann Sebastian Bach</dc:creator>
<dc:creator
rdf:resource=“http://dbpedia.org/resource/Johann_Seb
astian_Bach”/>
<dc:identifier>10853</dc:identifier>
<dc:title xml:lang=“en”>Bourree in e-
minor</dc:title>
. . .
<edm:type>SOUND</edm:type>
</edm:ProvidedCHO>

5. RDF as a Graph
edm: ProvidedCHO
http://mint-
projects.image.ntua.gr/data/sounds/
10853
dbpedia-
owl:Person
http://dbpedia.org/resource/J
ohann_Sebastian_Bach
dc:creator “Johann Sebastian Bach”
“10853”
“Bourree in e-minor”
“SOUND”
dc:identifier
dc:title
edm:type
1685-03-21
1750-07-28
…
dbpedia:birthDat
e
dbpedia:deathDate

6. EDM Syntax
<edm:ProvidedCHO rdf:about="http://mint-
projects.image.ntua.gr/data/sounds/10853">
<dc:creator>Johann Sebastian Bach</dc:creator>
<dc:creator
rdf:resource=“http://dbpedia.org/resource/Johann_Sebastian_Bach”/>
<dc:identifier>10853</dc:identifier>
<dc:title>Bourree in e-minor</dc:title>
. . .
<edm:type>SOUND</edm:type>
</edm:ProvidedCHO>
<ore:Aggregation rdf:about="http://mint-
projects.image.ntua.gr/data/sounds/Aggregation_10853">
<edm:aggregatedCHO rdf:resource=“http://mint-
projects.image.ntua.gr/data/sounds/10853”>
<edm:dataProvider>NTUA</edm:dataProvider>
<edm:isShownAt rdf:resource=“http://link.to.portal”>
<edm:rights>SOUND</edm:rights>
</edm:ProvidedCHO>

7. EDM as a Graph
edm:
ProvidedCHO
ore:
Aggregation
edm:aggregatedCH
O
“Johann
Sebastian
Bach”
dc:creator
“10853” “SOUND”
dc:identifier edm:type
“NTUA”
“Europeana
Sounds”
edm:provid
er
edm:dataProvid
er

8. edm:Collection
8
edm:
Collection
ore:
Aggregation
ore:
Aggregation
ore:
Aggregation
ore:
Aggregation
edm:
ProvidedCHO
edm:
ProvidedCHO
edm:
ProvidedCHO
edm:aggregatedCH
O
edm:aggregatedCH
O
edm:aggregatedCH
O
edm:aggregatedCH
O
dcterms:isPart
Of dcterms:isPart
Of
dcterms:isPart
Of

9. edm:Collection
9
 Group your imports per Collection
 Two approaches
1. Create one mapping that includes both the
edm:Collection and the edm:ProvidedCHOs
(EDM Sounds schema)
1. Create a mapping for the edm:Collection (EDM
Sounds Collection schema) and another
mapping for the edm:ProvidedCHOs (EDM
Sounds schema)

10. edm:Collection – Approach 1
10
 The relation of a edm:ProvidedCHO and its
aggregation is set by default

11. edm:Collection – Approach 1
11
 Create an instance of the edm:Collection class
and relate it to a new ore: Aggregation

12. edm:Collection – Approach 1
12
 Relate your edm:ProvidedCHOs to the
collection you’ve made

13. edm:Collection – Approach 1
<edm:ProvidedCHO rdf:about="http://mint-projects.image.ntua.gr/data/sounds/108_0851b">
<dcterms:isPartOf rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/MyCollection"/>
<edm:isGatheredInto rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/MyCollection"/>
</edm:ProvidedCHO>
<edm:Collection rdf:about="http://mint-projects.image.ntua.gr/data/sounds/MyCollection">
<dc:creator>Nikos</dc:creator>
</edm:Collection>
<ore:Aggregation rdf:about="http://mint-projects.image.ntua.gr/data/sounds/MyCollectionAggregation">
<edm:aggregatedCHO rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/MyCollection"/>
<edm:provider>Europeana Sounds</edm:provider>
</ore:Aggregation>
<ore:Aggregation rdf:about="http://mint-projects.image.ntua.gr/data/sounds/Aggregation_108_0851b">
<edm:aggregatedCHO rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/108_0851b"/>
<edm:provider>Europeana Sounds</edm:provider>
</ore:Aggregation>

14. edm:Collection – Approach 2
14
 Make a mapping for creating the
edm:Collection (EDM Sounds Collection
schema)
 Import
 Either use a single XML/CSV file with metadata about
the Collection
 Or use an existing import that YOU ARE NOT GOING
TO PUBLISH and use ONLY constant mappings

15. edm:Collection – Approach 2
15
 The relation of a edm:Collection and its
aggregation is set by default

16. edm:Collection – Approach 2
16
 In case you use an existing import that YOU ARE NOT
GOING TO PUBLISH then use ONLY constant
mappings

17. edm:Collection – Approach 2
17
 Then make a mapping (EDM Sounds
schema) for creating the edm:ProvidedCHOs
and relate them to the edm:Collection you’ve
made

18. EDM COLLECTION SOUNDS
<edm:Collection rdf:about="http://mint-projects.image.ntua.gr/data/sounds/MyCollection">
<dc:creator>Nikos</dc:creator>
</edm:Collection>
<ore:Aggregation rdf:about="http://mint-projects.image.ntua.gr/data/sounds/MyCollectionAggregation">
<edm:aggregatedCHO rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/MyCollection"/>
<edm:provider>Europeana Sounds</edm:provider>
</ore:Aggregation>
EDM SOUNDS
<edm:ProvidedCHO rdf:about="http://mint-projects.image.ntua.gr/data/sounds/108_0851b">
<dcterms:isPartOf rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/MyCollection"/>
<edm:isGatheredInto rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/MyCollection"/>
</edm:ProvidedCHO>
<ore:Aggregation rdf:about="http://mint-projects.image.ntua.gr/data/sounds/Aggregation_108_0851b">
<edm:aggregatedCHO rdf:resource="http://mint-projects.image.ntua.gr/data/sounds/108_0851b"/>
<edm:provider>Europeana Sounds</edm:provider>
</ore:Aggregation>
edm:Collection – Approach 2

19. Contact
19
Nikolaos Simou
National Technical University of Athens
Email: nsimou@image.ntua.gr
LinkedIn: http://www.linkedin.com/pub/nikolaos-
simou/68/31a/9aa