The UvA/HvA Library started publishing its collection metadata as Linked Open Data (LOD) in 2021, using a data transformation pipeline and Triply SAAS instance. A pilot project investigated whether this infrastructure could host other LOD datasets. Three research datasets from CREATE initiative were published as LOD, which turned out to have significant added value for combining various data sources in SPARQL queries. The project recommends continuing this as a permanent service for UvA/HvA datasets. The presentation could also provide more context on the library's infrastructure, the three datasets, and a live demo of SPARQL queries if time allows.

1. Driek Heesakkers, 23-05-23
Lightning talk
LOD hosting pilot:
”Bridging the gap”
Surf Research Month 2023

2. Time table
• LOD and FAIR
• Existing infrastructure
• Pilot
• Lessons learned & next steps

3. LOD & FAIR
*Linked Open Data
*Findable, Accessible,
Interoperable, Reusable

4. Researching
Jansonius’
publishing
history

5. Combining LOD endpoints with Sparql
full data story & publication: https://lod.uba.uva.nl/CREATE/-/stories/STCN--ECARTICO-Janssonius-cs
STCN only
Jansonius as publisher
STCN combined with ECARTICO
Jansonius house and family as publisher

7. Library LOD infrastructure
uba.uva.nl/opendata

8. Pilot: hosting LOD
Investigate:
- Demand
- Technical challenges
- Costs
Publish 3 datasets as LOD:
- ECARTICO
- Cinema Context
- ONSTAGE

9. 1. Demand (1)
UvA and HvA researchers:
– little awareness of LOD
+ growing interest in LOD
? post-project financing

10. 1. Demand (2)
DANS repository: 286 UvA-datasets
in humanities
9% suitable for LOD, 18% possibly
Note: large archeological bias

11. 2. Technical challenges

12. 3. Costs and resources (1)
Infra costs marginal

13. 3. Costs and resources (2)
Staff: 12 hours to publish RDF

14. 3. Costs and resources (3)
…but transformation to RDF
requires 160 hours!

15. Lessons learned
LOD as “glue” has added value over
static data
LOD hosting is easy, but (assisting)
conversion to LOD requires time
TriplyDB performs at scale
Triply License model (linking #triples
and #users) ok for hosting, but
prohibitive for data stories

16. Our next steps:
1. Create position LOD Coordinator
- intake of new LOD data sets
- LOD contact person within the
library, with faculties and researchers

17. Our next steps:
1. Create position LOD Coordinator
- intake of new possible LOD data sets
- LOD contact person within the
library, with faculties and researchers
2. Library will facilitate hosting as a
“passive service”
- available on demand but not (yet)
actively promoted
- First: bridge in-house knowledge gap

18. Heidi Brebels
h.brebels@uva.nl
Henriette Reerink
H.A.Reerink@uva.nl
Leon van Wissen
l.vanwissen@uva.nl
Special thanks to:

19. Questions!
lod.uba.uva.nl/browse/datasets
lod.uba.uva.nl/browse/stories
uba.uva.nl/opendata

20. Colophon
Driek Heesakkers – h.j.heesakkers@uva.nl
Flash 35 by Driek – CC0 - flic.kr/p/2nky7Py
Spoorboekje 1979/80 tabel 11 by Wattman - CC BY-NC - flic.kr/p/jKFrzR
Alphabet noodles by Ian Barbour – CC-BY-SA - flic.kr/p/e5aqyv
Franekera Jansonius - OTM: HB-KZL O.K. 83 - hdl.handle.net/11245/3.1204
Mind the gap whitechapel by Suad Kamardeen on Unsplash
Goal by Driek – CC0 - flic.kr/p/Uygxte
Bridge under construction by Mason Kimbarovsky on Unsplash
Bridge under construction by Gatis Murnieks on Unsplash
Wintermist by Hans van Reenen – CC BY-NC-SA - flic.kr/p/5XnhRW
Forest wood bridge by Anthony Roberts on Unsplash
Fyra model by Roel Hemkes – CC BY –flic.kr/p/tiTAkU
Werk in uitvoering by sebastiaan ter burg – CC BY-SA - flic.kr/p/rqv5d6
Come in, we’re open by Gary Simmons - flic.kr/p/61nn68
This presentation Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)