A new approach to aggregation
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The document discusses a Dutch initiative to improve the aggregation of digital heritage information, emphasizing visibility, usability, and sustainability. It proposes a shift from traditional aggregation methods to a focus on registering collections as linked open data, encouraging data owners to publish their datasets accordingly. The initiative includes a step-by-step approach involving local and central systems to create a connected network of digital heritage resources.
A new approach to aggregation
- 1. The Dutch Case A new approach to aggregation Wilbert Helmus (wilbert.helmus@den.nl) Enno Meijers (enno.meijers@kb.nl, @ennomeijers)
- 2. 2015: National Strategy Digital Heritage
- 3. Workpackages: 1. Visibility 2. Usability 3. Sustainability
- 4. and a revolution… Platform Software Producers
- 5. The human factor (organisational aspects…)
- 6. Source: Antoine Isaac – DBpedia Community Meeting, 2016-02 The challenge of aggregating Digital Heritage information
- 7. This sounds/looks familiar! NDE aims at increasing the social value of digital heritage by making it more visible, usable and sustainable.
- 8. Problems current infrastructure… • OAI-PMH based: so COPY and process… • no clear definitions of collections, organizations • no clear identifier schemes, limited use of formalized terms • multiple aggregation routes for different purposes (thematic, regional, domain) • silo based platforms with integrated aggregation and user services • data owners not happy about visibility, quality, provenance, usability • limited possibilities for cross-domain, cross-material views
- 10. NDE’s approach on aggregation • focus on registering instead of aggregation: • collections (= datasets), terminology sources, objects • refer to the source instead of copying the data • selective aggregation/indexing/querying based on user demands • encourage the use of formal definitions (‘who, where, what, when’) • build a Knowledge Graph for Digital Heritage • record the URI instead of copying the string • adoption of Linked Data technologies • publish collection data as Linked Open Data (build open data registries) • support data owners for publishing their data as linked data (cooperate with suppliers)
- 11. Described in DERA 1.0 : Digitaal Erfgoed Referentie Architectuur Register before aggregation
- 12. Step by step approach Step 1: move central systems to LOD - aggregators publish datasets as LOD - reference sources openly available as LOD - aggregators feed the registry - service portals use registry & aggregated data Step 2: synchronize local systems -local systems use formal reference sources -local adoption of formal identifiers -aggregators feed the registry -service portals use registry & aggregated data Step 3: move local systems to LOD - local systems publish datasets as LOD - local systems feed the registry - service portals use registry & aggregated LOD data Step 4: LOD enabled network - local systems feed the registry - local systems support distributed querying - service portals query local LOD data - aggregators become service portals
- 13. Central registry for datasets, terminology sources and links to objects. Based on DCAT, DATAID(?)
- 14. Knowledge graph for (Dutch) Digital Heritage
- 15. Building on previous work!
- 16. Designing the NDE cross- domain infrastructure
- 17. Proof-of-Concept phase (1) NDE participates in projects to develop / test the approach: • Zuiderzee Museum / Amsterdam Museum • Network Dutch War Resources • VTMK fashion thesaurus (Modemuze) • Picture library Dutch East Indies • GTAA @ Groninger Archieven (webarchive) • Linked Data Pilot National Archives • RKDArtists
- 18. Proof-of-Concept phase (2) • Investigate possible alignment with • Europeana • CLARIAH • Packed/Flemish Heritage institutions • Investigate new protocols/solutions/platforms: • Linked Data Fragments (LODLaundromat) • Resource Sync, Webmention, Linked Data Notifications • Experiment with distributed web technologies (IPFS/Blockchain)
- 19. Thanks for your attention! Let’s exchange ideas…