The document provides an introduction to the RDF data model and the Europeana Data Model (EDM) for describing digital cultural heritage objects such as sounds. It explains that RDF uses URIs to identify resources and describes them with properties and property values. It provides examples of how EDM represents a sound object and its related metadata and aggregation information using RDF syntax and as a graph. It also discusses two approaches for representing the grouping of objects into collections within the EDM model using RDF.

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