View of the train station. It is mostly empty and the sky is blue with some clouds.

This is Koblenz Hbf, the main train station in #Koblenz, #Germany. I am waiting for the train to Stuttgart. This is the third time @Ayenkantun and I visited Koblenz. This time we traveled to attend Philipp Seifer's PhD defense. I co-author several papers with […]

[Original post on mstdn.degu.cl]

metaphactory

this week I learned that there is a SPARQL endpoint with the @OpenAlex content: https://semopenalex.org/resource/semopenalex:About

#sparql

Biodiversity Consensus Dashboard

Love how https://consensus.rubalkhali.science/ links ecological data to the molecular world of #UniProt with some smarts and the power of federated #SPARQL

SPARQL query of a local endpoint that uses http://schema.org vocabulary

SPARQL query of OSM Planet endpoint https://qlever.dev/api/osm-planet PREFIX geo: <http://www.opengis.net/ont/geosparql#> PREFIX osmkey: <https://www.openstreetmap.org/wiki/Key:> PREFIX ogc: <http://www.opengis.net/rdf#> PREFIX osmrel: <https://www.openstreetmap.org/relation/> SELECT ?osm_id ?hasgeometry WHERE { osmrel:1960198 ogc:sfContains ?osm_id . ?osm_id geo:hasGeometry/geo:asWKT ?hasgeometry . ?osm_id osmkey:building ?building . }

Messing about with #ClaudeCode, #RDF and #SPARQL, building an app that enables multiple queries in same window, geographic and network display, and exploring the "schema" implied by the entitity types and their connections. I want something like the apps we have to query SQL databases.

Rescuing Scholia #3: We did it! It was not a set up, when I openly wondered if we would be able to rescue Scholia in time. I honestly did not know. Three weeks and some serious hacking by an international team later I was more optimistic. Actually, just before christmas, we started writing a SWAT4HCLS 2026 demonstration abstract. This was accepted and you can read the _Scholia 2026: Compliance with SPARQL 1.1_ preprint here and here. This paper describes the work that had to be done, and I am deeply grateful to everyone who contributed with smaller or bigger contributions (Daniel, Peter, Konrad, Johannes, Lars, Wolfgang, Hannah). I am merely first author for the demo, and just another contributor to the long series of patches, in a branch started by Prof. Hannah Bast. The work actually started long before that, with the _Robustifying Scholia_ grant (see doi:10.3897/rio.5.e35820), where we explored alternatives. The Wikidata graph (RDF) split has been long coming, and I can recommend this recent The Signpost article by Lane for a good overview. So, this would not have been possible with the many people who contributed over the years. But this last sprint really made a difference. The developments of the QLever software in the past year are very important, and the SPARQL endpoint we run now is live updated, just like we knew from the Wikidata Query Service (WDQS). Recent improvement allowed us to replace all the Wikidata and Blazegraph specific aspects of the SPARQL queries, and good discussions let to pragmatic approaches to keep localization features Scholia had for displaying query results from Wikidata. The work is not completed, however. All queries are SPARQL 1.1 now, but some can still be further optimized, and some still need some fixing. For example, I still spot some QIDs here and there, instead of the localized labels that should be shown instead. Also, we are actively looking in getting everything running again on WMF servers (see this overview issue), so that _scholia.toolforge.org_ works again. For now, however, please use qlever.scholia.wiki.

new blog: "Rescuing Scholia #3: We did it!" chem-bla-ics.linkedchemistry.info/2026/02/28/rescuing-scho... https://doi.org/10.59350/kd793-2fe02

"For now, however, please use qlever.scholia.wiki." https://qlever.scholia.wiki/

#wikidata #scholia #qlever #sparql

🔥 Generative AI can now answer complex scientific questions! Our latest paper evaluates the ability of #LLMs to answer questions over #KnowledgeGraphs through Natural Language to #SPARQL translation. Excellent results across multiple benchmarks.
📄 dl.acm.org/doi/10.1145/...

Unlock the power of the Semantic Web! 🕸️✨

New video: Mastering #SPARQL labels & troubleshooting DBpedia schema changes. 📊

Watch: youtu.be/-l1kWg-7lWY

🚀 Want exclusive perks? Join my Channel Membership to support the mission! 💎

#SemanticWeb #GraphDB #Neo4j #DataScience

RE: https://openbiblio.social/@awinkler/115982827467465444

from the link GitHub issue: "Here is a demo of QLever handling one trillion triples on a single commodity PC: https://qlever.dev/one-trillion . That is more than fifty times larger than the current Wikidata" #sparql #rdf #opensource

What is in #wikidata? The answer to this question on the Wikidata:Statistics page (https://www.wikidata.org/wiki/Wikidata:Statistics hasn't been updated for a while. This #sparql query run in #qlever provides a snapshot of the current situation (it's not […]

[Original post on openbiblio.social]

Will AI Get Rid of this Turbulent Priest? From medieval misunderstandings to modern AI: why precision matters and how the Semantic Web can help.

From a turbulent priest in the Middle Ages to GenAI today, ambiguity has real consequences. I wrote a short article on how Semantic Web technologies can help:
www.newresalhaider.com/post/turbule...
#GenAI #LLM #Turtle #SPARQL #LinkedData #SemanticWeb

WikiPathways SNORQL UI Snorql: A SPARQL Explorer - Extended Edition

@jerven these owl:sameAs triples should now be live in the @wikipathways SPARQL endpoint (https://sparql.wikipathways.org/ and the PlantMetWiki endpoint (https://plantmetwiki.bioinformatics.nl/

#bioinformatics #sparql

Release 0.8.0 · glaciers-in-archives/snowman Snowman 0.8.0 ⛄ TipHelp us shape Snowman's roadmap, by participating in the Snowman community survey! This Snowman release brings support for making SPARQL CONSTRUCT queries and a large collection...

Snowman, a static site generator for #SPARQL backends has had another release!

github.com/glaciers-in-archives/sno...

HyperMind is a #SymbolicAI reasoning stack & #agents with #KnowledgeGraph & build-in #RDF GraphDB. Transforms questions into verified, traceable answers.

#SPARQL 1.1, #Datalog rules, #OWL2 inference, GraphFrame analytics, & motif detection—unified interface.
#AI #OpenSource
Link in the 💬👇

The Weekly Edge: Knowledge Graphs at Netflix & Bloomberg, Graphs on Postgres, & Make Your Music SPARQL [9 January 2026] Discover what’s new this week in graph tech, including a demo of graphs on PostgreSQL, a JanusGraph walkthrough, and interviews with Bloomberg and Netflix.

This ~week in graph tech news:
- #knowledgegraphs at @netflix.com
- Graphs on #Postgres
- KGs at @bloomberg.com
- Setting up #JanusGraph on #Azure
- Using #SPARQL to discover new music

All this and more in this edition of the Weekly Edge: gdotv.com/blog/weekly-...

#graphdatabases #RDF #backenddev

RE: https://hachyderm.io/@LeafyEricScott/115850226576380708

#SPARQL turned out to not be necessary for this project after all, thank goodness.

@maelle At least I *think* this is the most gentle introduction to #SPARQL for R users

Un peu de #SPARQL pour terminer la journée : voici le nombre de récompenses littéraires décernées en France (par année & genre) actuellement recensées dans #Wikidata. Manque encore pas mal de données, mais voici déjà 18000 récompenses. w.wiki/HCuu #PrixLitteraire

Original post on digitalcourage.social

#MarcXML encapsulated as a string in #JSON is a pain to work with as I am finding out trying to query #HathiTrust APIs for digitised items with a list of #OCLC numbers obtained via #SPARQL from #Wikidata.

Things I wish for:

1. direct access to the MARCXML from HathiTrust
2. a publicly […]

RE: https://social.edu.nl/@tgx_um/115645028833529913

on Monday we have a go/no-go and we really want to go

So, are you considering sign up before Sunday evening!

#ontologies #linkeddata #sparql

Love #SPARQL and #RDF? I do. This info was super hard to find and handy.

Qui a reçu le plus de prix littéraires français ? Voilà le classement pour les données dans Wikidata : Sorj Chalandon (15), Régis Debray (12), Alain Bosquet et Michel del Castillo (11). Et la requête SPARQL permettant de classer +10000 récipiendaires w.wiki/GS7R #PrixLittéraire #Wikidata #SPARQL

Nathacha Appanah vient de recevoir le prix Goncourt des lycéens quelques jours après avoir reçu le Renaudot des lycéens, c'est la première fois depuis que les deux prix existent que cela arrive : w.wiki/GL6r #wikidata #sparql

Please welcome the RDF legend Dr. Amir Hosseini to the G.V() team as the Data Scientist leading the design and implementation of #RDF / #SPARQL in G.V()! ✨

From COVID PhD to speeding up complex schema checks using RDBMSs, Amir is an expert we're happy to have on the team!

#SemanticWeb #datascience

Wir transformieren momentan die Konferenzankündigungen und -bericht, die seit gut zwei Jahrzehnten auf #HSozKult (@hsozkult ) publiziert werden, zu Linked Open Data. Heute haben wir gut 10000 Veranstaltungen zu #Wikidata gepusht (die Beiträge zu diesen […]

[Original post on digitalcourage.social]

Connected Data London 2025 A Talk by Ivo Velitchkov

Tired of the LLM noise? Let’s shift attention to something fully deterministic – rules running over a knowledge graph.

(now on the plane to London)

#SHACL #SPARQL
2025.connected-data.london/talks/rules-...

#SPARQL query patterns can be seen at 3 zoom levels: function, structure, ontology.
Within the function level, there are 3 categories of patterns: selectors, extractors, and aggregators. So every query can be assembled from LEGO blocks snapping at the same variables. More on that in a week.

Model Context Protocol (MCP) and triple stores: natural language queries for knowledge graphs Blog by Rod Page on biodiversity informatics, taxonomy, systematics, phylogeny, knowledge graphs, and other topics.

I wrote up some brief notes on Model Context Protocol (MCP) and triple stores iphylo.blogspot.com/2025/11/mode.... The idea of querying knowledge graphs using natural language is intoxicating.

Original post on digitalcourage.social

If you had the necessary resources (time and money) to digitise Arabic periodicals, one should probably start with this #SPARQL query to check #Wikidata for unique holdings: query-chest.toolforge.org/redirect/r9Gn5nKhkWUYgyY...

#ArabPeriodicalStudies […]

Karte Berlins mit 67 blauen Punkten, die für je eine Fahrradreparaturstation stehen

kleiner Service-#SPARQL-Query für Radfahrer:innen in Berlin: Fahrradreparaturstationen in Berlin laut #openstreetmap, abgefragt mit #qlever: https://qlever.dev/osm-planet/7rq0zw?exec=true

Super proud to share a new QLever milestone. We loaded one trillion triples on a single AMD Ryzen 9 machine with 16 cores and 128 GB RAM 🚀. Index size is 6.5 TB and the dataset runs even with less memory.

Dataset: qlever.dev/one-trillion/

#RDF #SPARQL #knowledgegraph #scaling