The Europeana Data Model: Constraints and Opportunities Prof. Dr. Stefan Gradmann Based on work done with M. Doerr, S. Hennicke, A. Isaac, C. Meghini,

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Presentation transcript:

The Europeana Data Model: Constraints and Opportunities Prof. Dr. Stefan Gradmann Based on work done with M. Doerr, S. Hennicke, A. Isaac, C. Meghini, G. Schreiber, H. Van de Sompel And more generally Europeana V1.0 and EuropeanaConnect

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 2 Overview The Big Picture: semantic Contextualisation in Europeana The Europeana Data Model (EDM) – Basics & Constraints – Les Fleurs du Mal and more... – Status Quo Opportunities

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 3 EDM: The Big Picture

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 4 Objects and Semantic Context in Europeana's Big Picture Contextualised Object Representations ( → Knowledge Generation): Europeana connects Organisation of Objects and Knowledge

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 5 The Semantic Data Layer Library Archive Museum Bridging „isles of information“ by connecting objects from different domains via cross-vocabulary links.

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 6 EDM and Linked Open Data Context Options DBpedia VIAF GND Geonames LCSH … Europeana-Objects

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 7 EDM Basics & Requirements

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 8 Pre-Europeana

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 9 ESE “Europeana Semantic Elements” (ESE) Created for 2008 version of Europeana enforces interoperability by converting datasets to a Dublin-Core like “flat” representation “simple and robust” but: original metadata is not visible anymore no specializations to finer-grained models no connections to external (open data) resources Probably shouldn't have been called “semantic” :-)

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 10 EDM: Requirements and Design Principles Requirements evident from data analysis, from talking to experts as well as from meetings with all communities: Distinction of real object (book, picture, file, multimedia object) and its digital representation Distinction between object properties and descriptive metadata several perspectives of object must be possible with potentially contradicting statements Support for complex composite objects Standard format for metadata with specializing options Standard format for vocabularies with specializing options Maximum reuse of existing standards

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 11 EDM and Standards Simple Knowledge Organization System (SKOS) Models the KOSs in the Semantic Data Layer of Europeana. Allows for matching between KOSs. DCMI Metadata Terms (DCTerms) Used for a core of semantically interoperable properties for descriptive metadata about an object. Ensures backwards compatibility to ESE. Open Archives Initiative Object Reuse & Exchange (OAI ORE) Organizes object representations in Europeana as aggregations of WWW resource Provided Object: Represents the described object of interest. Digital Representation: Some digital view of the object. Proxy: The description of the provided object from one given perspective. Aggregation: Groups all information pieces together.

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 12 EDM: Classes

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 13 Les Fleurs du Mal: UNIMARC nam FRBNF http://catalogue.bnf.fr/ark:/12148/cb f 039 $oGEA$a $a d1857 m y0frey50 ba 1010 $afre 102 $aFR 105 $a||||z 00||| 106 $ar 2001 $aˆLes ‰fleurs du mal$bTexte imprimé$fpar Charles Baudelaire 210 $aParis$cPoulet-Malassis et De Broise$d $a248 p.$d19 cm 676 $a841.8$v $a840$2Cadre de classement de la Bibliographie nationale française 700 |$ $aBaudelaire$bCharles$ $aFR$bBNF$c $gAFNOR$2intermrc

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 14 Les Fleurs du Mal: Gallica

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 15 Les Fleurs du Mal in EDM Cultural Heritage Object (CHO) Proxy Digital Representations Aggregation Semantic Context

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 16 Event Centric Modelling Preserving and exploiting original data also means being compatible with descriptions beyond simple object level

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 17 Complex Objects and Properties Part-whole links for complex (hierarchical) objects Order among parts of objects Derivation and versioning relations

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 ESE... <...xmlns:europeana=" urn:repox.bn.org.pl:polona:oai: 94A8AAD18E FBE92589A [Ośmiu powstańców uzbrojonych w kosy] [Dokument ikonograficzny] Powstanie 1863 r. styczniowe - ikonografia [ ] Biblioteka Narodowa

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1... in EDM 19

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 20 Status of the EDM

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 21 Current State of the EDM Confirmed feasibility in four community workshops (archives, libraries, audiovisual archives, museums). Linked Open Data Pilot is based on the EDM. Rolling out in the Europeana Portal backoffice is still to come Documentation is available: EDM Specifications and Primer at Martin Doerr, Stefan Gradmann, Steffen Hennicke, Antoine Isaac, Carlo Meghini, Herbert van de Sompel: The Europeana Data Model. IFLA 2010 (Gothenburg). Session on „Libraries and the Semantic Web“. Development documentation and OWL-Ontology in EuropeanaLabs:

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 22 EDM and Linked Open Data Europeana-Objects

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 23 Opportunities

The EDM: Constraints and Opportunities Prof. Dr. Stefan Gradmann, Humboldt Universität zu Berlin Europeana V1.0 WP3 / EuropeanaConnect WP1 24 EDM: Opportunities Reuse of Europeana Data in the LoD cloud Reuse of LoD cloud within Europeana Make Europeana a prime resource for Digital Humanities community by providing scholarly heuristics building on LoD Reduce data flows: prefer linking over replication! Aim at a truly distributed data architecture → Europeana V2.0 WP7

Europeana v1.0 WP3 EuropeanaConnect WP1 Prof. Dr. Stefan Gradmann Humboldt-Universität zu Berlin Institut für Bibliotheks- und Informationswissenschaft Unter den Linden Berlin Tel.: Questions ?