Alexander WinklerJun 15, 2024

I'm looking for interesting examples of federated #SPARQL queries (maybe but not necessarily using #Wikidata) in the context of #culturalheritage/ #museum / #library/ #GLAM etc. I've got the impression that federation is used less often than it should be and am wondering why.

Any pointers are very appreciated.

Here's a post that has a #Commons query federated with Wikidata: https://openbiblio.social/@awinkler/112196978364956277

#semanticweb #lod

Alexander Winkler (@[email protected])

Federation in the #Wikimedia #Commons Query Service is impressively powerful: You can use the wealth of information contained in #Wikidata, combine it with structured metadata on Commons and retrieve media from Commons you'd hardly find otherwise. For example: - Find images for all monuments with a Bavarian monument authority ID in a certain administrative district (here Passau): https://w.wiki/9dba - images of churches in Rome: https://w.wiki/9dbf

OpenBiblio.Social
Show threadChristof SchöchJun 16, 2024

@awinkler @MariaHinzmann @fpianz

Regarding the question why it is used "less often than it should be".

We could not agree more. The #SemanticWeb, after all, is not supposed to be a collection of independent #information silos; rather, a #distributed but closely networked set of data sources.

In our experience, semantic and technical #interoperability is harder to achieve than it should be. Even within the #Wikibase ecosystem, as in our case, it was not trivial.

Show threadAlexander Winkler
@christof @MariaHinzmann @fpianz Interesting. Have you written about your experiences anywhere? As of now, there is basically just one huge silo, viz. Wikidata, and strangely it is easier to import everything there rather than actually link open data. I wonder what would be needed to overcome this issue. More rdf data, more sparql endpoints? But that's probably just part of a solution.
Jun 16, 2024 at 8:12amWeb
Show threadChristof SchöchJun 18, 2024

@awinkler @MariaHinzmann @fpianz

We have a forthcoming chapter on #MiMoText that (among other things) comments on some aspects of #federation, #interoperability and #infrastructure for #LOD in the #Wikibase / #Wikidata context.

The preprint is available here: https://zenodo.org/doi/10.5281/zenodo.12080340

Patterns in modeling and querying a knowledge graph for literary history [preprint]

Preprint: Maria Hinzmann, Matthias Bremm, Tinghui Duan, Anne Klee, Johanna Konstanciak, Julia Röttgermann, Moritz Steffes, Christof Schöch, Joëlle Weis (2024 / im Druck). “Patterns in modeling and querying a knowledge graph for literary history”. In: Pattern Theory in Language and Communication, ed. Sabine Arndt-Lappe, Milena Belosevic, Peter Maurer, Claudine Moulin, Achim Rettinger & Sören Stumpf. Trier: TCLC.  – Please use the final, open access version of this chapter once it becomes available. –

Zenodo
Show threadAlexander WinklerJun 18, 2024
@christof @MariaHinzmann @fpianz thanks for making the paper available ahead of print!