SC2 Workshop 2: CELLAR: The Publications Office's Semantic Repository
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The document outlines the structure and functionality of the EU's Cellar semantic repository, including its use of various data formats and metadata standards. It discusses data retrieval methods such as SPARQL and provides statistics on usage, indicating high daily request volumes and a significant amount of data. The publication also emphasizes the importance of linked open data and describes tools for accessing the repository.
![How are things structured in the CELLAR?
Ontologies /
Common Data Model
InstanceDataControlData
Thesauri / authority
tables
…
WORK
<Directive>
e.g. 32006L0121
Expression
FR: Directive 2006/121/CE du
Parlement européen et du Conseil
du 18 décembre 2006[…]
Expression
EN: Directive 2006/121/EC of the
European Parliament and of the
Council of 18 December 2006
amending Council Directive 67/
548/EEC[…]
Expression
EL: Οδηγία 2006/121/ΕΚ του
Ευρωπαϊκού Κοινοβουλίου και του
Συμβουλίου, της 18ης Δεκεμβρίου
2006 , για την τροποποίηση της
οδηγίας 67/548/ΕΟΚ […]
Manifestation
PDF
Manifestation
xhtml
Manifestation
PDF
Manifestation
xhtml
Manifestation
PDF
Manifestation
xhtml
SUBJECT
002897: rapprochement des
législations
AGENT
PE: European Parliament
CONSIL: Council](https://image.slidesharecdn.com/10-marckustercellarthepublicationsofficessemanticrepository-161010090909/85/SC2-Workshop-2-CELLAR-The-Publications-Office-s-Semantic-Repository-3-320.jpg)
SC2 Workshop 2: CELLAR: The Publications Office's Semantic Repository
- 1. CELLAR: The Publications Office's Semantic Repository Marc Wilhelm Küster Publications Office of the EU European Policy Perspectives on Data-intensive Agriculture & Food Brussels, 30 September 2016
- 2. What goes into the CELLAR? Contractors … Reception Validation Conversion IMMC CELLARMETS ELI: European Legislation Identifier IMMC: Standardized XML transmission envelope METS: Metadata Encoding Standard
- 3. How are things structured in the CELLAR? Ontologies / Common Data Model InstanceDataControlData Thesauri / authority tables … WORK <Directive> e.g. 32006L0121 Expression FR: Directive 2006/121/CE du Parlement européen et du Conseil du 18 décembre 2006[…] Expression EN: Directive 2006/121/EC of the European Parliament and of the Council of 18 December 2006 amending Council Directive 67/ 548/EEC[…] Expression EL: Οδηγία 2006/121/ΕΚ του Ευρωπαϊκού Κοινοβουλίου και του Συμβουλίου, της 18ης Δεκεμβρίου 2006 , για την τροποποίηση της οδηγίας 67/548/ΕΟΚ […] Manifestation PDF Manifestation xhtml Manifestation PDF Manifestation xhtml Manifestation PDF Manifestation xhtml SUBJECT 002897: rapprochement des législations AGENT PE: European Parliament CONSIL: Council
- 4. How can you retrieve data from CELLAR? SPARQLDirect access / RESTful WS Notification / RSS EUR-Lex OP Portal Internet http://publications.europa.eu/webapi/rdf/sparql http://publications.europa.eu/resource/... Dublin Core (core metadata) Linked Open Data (LOD) Web-friendly ("RESTful") Interface Resource Description Framework (RDF) Standard Query Language (SPARQL) FRBR model URIs: http://publications.europa.eu/resource/ {ps-id}/{obj-id}
- 5. Eurovoc
- 6. Eurovoc Result:: 18630 acts (as of 2016-09-29)
- 7. Eurovoc Result: 18630 acts (as of 2016-09-29) Grape
- 8. •8 mio requests per day served on average, peaks >20 mio •>100k SPARQL queries / day •> 1 mio different resources in > 10 million linguistic versions and > 28 mio items •> 230 million persistent identifiers •> 1500 million triples in Oracle RDF store •Ca. 5000 resources treated each day (most in 23 languages) • Sizes: •4 TB Oracle DB (compressed) •Content (in Fedora repository) > 17.5 TB •120 million files in Fedora State: 2016-09 How much is CELLAR used? Requests from internet / country (2016-09) Daily requests / day (2016-09) SPARQL requests / day (2016-09)
- 9. Attributions for reused images: Wine CELLAR: https://flic.kr/p/pkG1QS Photo of OWL: https://flic.kr/p/6AMV1C http://gephi.github.io/features/ Network: https://en.wikipedia.org/wiki/Network_theory#/media/File:Internet_map_1024.jpg https://openclipart.org/detail/169750/fileiconpdf https://openclipart.org/detail/169753/fileiconxml https://openclipart.org/detail/169751/fileiconhtml