There will be changes in the week of January 20th 2026 regarding the WDQS graph split and sunsetting of the legacy service. There is a https://qlever.scholia.wiki/ mirror running with QLever as backend with the full Wikidata content. This mirror is part of an evaluation of alternatives to Blazegraph.
yesterday evening work with @EvoMRI on the @wdscholia instance on Toolforge. We noted that our main instance only shows half of the results, only @wikidata 'main' part. The 'scholarly' articles part are no longer there. That day has been pending.
We seem very close. I wrote up a status 3 weeks ago: https://chem-bla-ics.linkedchemistry.info/2025/12/31/rescuing-scholia-2-getting-close.html
For this week, plz use https://qlever.scholia.wiki/
We put a banner on the #toolforge instance
yesterday evening work with @EvoMRI on the @wdscholia instance on Toolforge. We noted that our main instance only shows half of the results, only @wikidata 'main' part. The 'scholarly' articles part are no longer there. That day has been pending.
We seem very close. I wrote up a status 3 weeks ago: https://chem-bla-ics.linkedchemistry.info/2025/12/31/rescuing-scholia-2-getting-close.html
For this week, plz use https://qlever.scholia.wiki/
We put a banner on the #toolforge instance
There will be changes in the week of January 20th 2026 regarding the WDQS graph split and sunsetting of the legacy service. There is a https://qlever.scholia.wiki/ mirror running with QLever as backend with the full Wikidata content. This mirror is part of an evaluation of alternatives to Blazegraph.
News about Scholia:
"it looks like we will have a working replacement in time before the WDQS instance with all the Wikidata triples in a single SPARQL endpoint goes down, likely in a week or so"
"scholia.toolforge.org has seen ridiculous abuse by scrapers"
"So, plenty of work is left to be done in the next few days. But we are getting close. So, please give qlever.scholia.wiki a go, and let us know your observations. "
https://chem-bla-ics.linkedchemistry.info/2025/12/31/rescuing-scholia-2-getting-close.html
new blog: "Rescuing Scholia: will we make it in time?" https://doi.org/10.59350/yh369-rr787 https://chem-bla-ics.linkedchemistry.info/2025/12/08/rescuing-scholia.html
"What started out in 2016 on Twitter became a (small) award winning decade long collaborative project. Unfortunately, the future is not clear. We are at odds if it will survice the growth of Wikidata and in particularly the SPARQL graph split."
new blog: "Rescuing Scholia: will we make it in time?" https://doi.org/10.59350/yh369-rr787 https://chem-bla-ics.linkedchemistry.info/2025/12/08/rescuing-scholia.html
"What started out in 2016 on Twitter became a (small) award winning decade long collaborative project. Unfortunately, the future is not clear. We are at odds if it will survice the growth of Wikidata and in particularly the SPARQL graph split."
"QLever is the fastest engine overall, but is slower for distinct answers. Virtuoso is fast but diverges the most by far mostly due to several known causes. MillenniumDB and Blazegraph are the slowest. MillenniumDB is fast on simple queries, but slow on complex queries." https://ceur-ws.org/Vol-4108/paper3.pdf
"QLever is the fastest engine overall, but is slower for distinct answers. Virtuoso is fast but diverges the most by far mostly due to several known causes. MillenniumDB and Blazegraph are the slowest. MillenniumDB is fast on simple queries, but slow on complex queries." https://ceur-ws.org/Vol-4108/paper3.pdf
#ClimateKG - the #IPCC #AR6 reports are a pretty big beast. Authored over 7 years they are the ultimate #statusupdate of planet earth. Quant data: https://doi.org/10.5281/zenodo.17521936 - Reports 7, Pages 10,047, Words 8,047,000, Citations 48,400, Data 66,834, Figures 1,672, Authors 1,106, Glossary 925, Acronyms 3,041, Lang 5+. The entity relationship model is need to map the parts of the reports, relations, then to allow markup of entities, concepts, etc
#ClimateKG will be used for the #IPCC #AR6 corpus of 7 main reports of 10,000 pages. For corpus browsing, republishing, community enrichment. The constructed knowledge graph in Wikibase/MediaWiki allows browsing using the familiar #MediaWiki interface with #Wikidata enhancements like infoboxes, and #scholia like interfaces https://scholia.toolforge.org/ | Republishing is intended for sharing or reviewing search results on climate topics | Enrichment is for data scientists to make use of reports >>>
it takes quite a bit of effort to update all the SPARQL queries (we have more than 300) to accommodate for the RDF graph split of @wikidata
Want to help? Check out https://www.wikidata.org/wiki/Wikidata:Scholia/Events/2025_11
it takes quite a bit of effort to update all the SPARQL queries (we have more than 300) to accommodate for the RDF graph split of @wikidata
Want to help? Check out https://www.wikidata.org/wiki/Wikidata:Scholia/Events/2025_11
