learned a little sparql to query wikidata and satiate a curiosity: a graph of all the programming languages and what they influenced query.wikidata.org/index.html#%...
January 11, 2026 at 6:14 PM
learned a little sparql to query wikidata and satiate a curiosity: a graph of all the programming languages and what they influenced query.wikidata.org/index.html#%...
Opsis is a one-file faceted browser for [[RDF]] graphs.
Every click is a SPARQL query.
Fully data-centric. Even its settings are part of the graph.
I'm using it daily to browse my local personal knowledge graph. Now it's available for everyone to use.
#SPARQL #PKG
github.com/kvistgaard/o...
Every click is a SPARQL query.
Fully data-centric. Even its settings are part of the graph.
I'm using it daily to browse my local personal knowledge graph. Now it's available for everyone to use.
#SPARQL #PKG
github.com/kvistgaard/o...
September 24, 2026 at 2:21 PM
Opsis is a one-file faceted browser for [[RDF]] graphs.
Every click is a SPARQL query.
Fully data-centric. Even its settings are part of the graph.
I'm using it daily to browse my local personal knowledge graph. Now it's available for everyone to use.
#SPARQL #PKG
github.com/kvistgaard/o...
Every click is a SPARQL query.
Fully data-centric. Even its settings are part of the graph.
I'm using it daily to browse my local personal knowledge graph. Now it's available for everyone to use.
#SPARQL #PKG
github.com/kvistgaard/o...
github.com/oxigraph/oxi... is that but predates vibes
GitHub - oxigraph/oxigraph: SPARQL graph database
SPARQL graph database. Contribute to oxigraph/oxigraph development by creating an account on GitHub.
github.com
September 23, 2026 at 10:25 AM
github.com/oxigraph/oxi... is that but predates vibes
New to Open Knowledge Graphs: Opsis—a lightweight browser for exploring RDF knowledge graphs through SPARQL endpoints.
Built by Ivo Velitchkov (@velitchkov.eu)
Explore it: openknowledgegraphs.com/software/ops...
#KnowledgeGraphs #SemanticWeb
Built by Ivo Velitchkov (@velitchkov.eu)
Explore it: openknowledgegraphs.com/software/ops...
#KnowledgeGraphs #SemanticWeb
Opsis - Open Knowledge Graphs
single-file faceted browser for RDF graphs using SPARQL endpoints
openknowledgegraphs.com
September 25, 2026 at 3:12 PM
New to Open Knowledge Graphs: Opsis—a lightweight browser for exploring RDF knowledge graphs through SPARQL endpoints.
Built by Ivo Velitchkov (@velitchkov.eu)
Explore it: openknowledgegraphs.com/software/ops...
#KnowledgeGraphs #SemanticWeb
Built by Ivo Velitchkov (@velitchkov.eu)
Explore it: openknowledgegraphs.com/software/ops...
#KnowledgeGraphs #SemanticWeb
Learning SQL after SPARQL is like going from a 3 dimensional world to a 2-D one. Like going from Oz to Kansas.
September 24, 2026 at 3:24 PM
Learning SQL after SPARQL is like going from a 3 dimensional world to a 2-D one. Like going from Oz to Kansas.
Demain c'est ma dernière formation #SPARQL ajoutée cette année à mon catalogue de formations : 112 personnes formées au total !
🔸 support de formation doi.org/10.5281/zeno...
🔸 mémento SPARQL pour #Wikidata doi.org/10.5281/zeno...
🔸 support de formation doi.org/10.5281/zeno...
🔸 mémento SPARQL pour #Wikidata doi.org/10.5281/zeno...
Introduction à SPARQL
Venez découvrir ce langage de requête sémantique de base de données, basé sur la technologie RDF. Le langage SPARQL permet d'interroger de gigantesques bases, telles que wikidata.org ou data.bnf.fr. U...
doi.org
May 5, 2025 at 6:26 PM
Demain c'est ma dernière formation #SPARQL ajoutée cette année à mon catalogue de formations : 112 personnes formées au total !
🔸 support de formation doi.org/10.5281/zeno...
🔸 mémento SPARQL pour #Wikidata doi.org/10.5281/zeno...
🔸 support de formation doi.org/10.5281/zeno...
🔸 mémento SPARQL pour #Wikidata doi.org/10.5281/zeno...
You mean Wikidata? Structured data that can be queried through SPARQL. www.wikidata.org/wiki/Wikidat...
Wikidata
www.wikidata.org
June 16, 2025 at 2:40 PM
You mean Wikidata? Structured data that can be queried through SPARQL. www.wikidata.org/wiki/Wikidat...
yeah and the sparql-over-http interface set the contours of what you could do with it
like intertwingler is very chatty so it needs a direct-attached quad store; sparql would be too slow for it (not to mention overkill as almost everything it needs to do is a basic graph query), so i made one
like intertwingler is very chatty so it needs a direct-attached quad store; sparql would be too slow for it (not to mention overkill as almost everything it needs to do is a basic graph query), so i made one
September 23, 2026 at 10:43 AM
yeah and the sparql-over-http interface set the contours of what you could do with it
like intertwingler is very chatty so it needs a direct-attached quad store; sparql would be too slow for it (not to mention overkill as almost everything it needs to do is a basic graph query), so i made one
like intertwingler is very chatty so it needs a direct-attached quad store; sparql would be too slow for it (not to mention overkill as almost everything it needs to do is a basic graph query), so i made one
(To be clear, if someone wants to write me a SPARQL query that will fish this out from Wikidata, that would be amazing, but my SPARQL-fu is definitely too weak to deal with that; it would be enough of a headfuck to deal with all the UNION and WHERE clauses in actual SQL)
September 23, 2026 at 10:23 AM
(To be clear, if someone wants to write me a SPARQL query that will fish this out from Wikidata, that would be amazing, but my SPARQL-fu is definitely too weak to deal with that; it would be enough of a headfuck to deal with all the UNION and WHERE clauses in actual SQL)
Im Linked Data Service gibt es ein neues Angebot. Der neue SPARQL-Endpunkt erlaubt die semantische Abfrage unserer Daten. sparql.dnb.de
#LinkedOpenData #SPARQL
#LinkedOpenData #SPARQL
September 24, 2025 at 12:30 PM
Im Linked Data Service gibt es ein neues Angebot. Der neue SPARQL-Endpunkt erlaubt die semantische Abfrage unserer Daten. sparql.dnb.de
#LinkedOpenData #SPARQL
#LinkedOpenData #SPARQL
This looks so much fun and a new project for the new year. Thank you. But I'm struggling to filter things to just articles requiring images without learning SPARQL. Any tips?
December 31, 2024 at 12:04 PM
This looks so much fun and a new project for the new year. Thank you. But I'm struggling to filter things to just articles requiring images without learning SPARQL. Any tips?
Et interrogeable en SparQL
Connaissez-vous Wikidata? Il s'agit d'une base de données collaborative de connaissances libres.
Elle peut être utilisée pour enrichir automatiquement les articles de Wikipédia dans différentes langues 😉.
➡️ N'hésitez pas à la consulter et à l'enrichir 😊!
w.wiki/Jg
Elle peut être utilisée pour enrichir automatiquement les articles de Wikipédia dans différentes langues 😉.
➡️ N'hésitez pas à la consulter et à l'enrichir 😊!
w.wiki/Jg
February 15, 2026 at 8:41 PM
Et interrogeable en SparQL
Vol:18 No:6 → PlanRGCN: Predicting SPARQL Query Performance
👥 Authors: Abiram Mohanaraj, Matteo Lissandrini, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p1621-mohanaraj.pdf
👥 Authors: Abiram Mohanaraj, Matteo Lissandrini, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p1621-mohanaraj.pdf
June 30, 2025 at 6:00 PM
Vol:18 No:6 → PlanRGCN: Predicting SPARQL Query Performance
👥 Authors: Abiram Mohanaraj, Matteo Lissandrini, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p1621-mohanaraj.pdf
👥 Authors: Abiram Mohanaraj, Matteo Lissandrini, Katja Hose
📄 PDF: https://www.vldb.org/pvldb/vol18/p1621-mohanaraj.pdf
For #tidytuesday week 3, I tried mapping the most commonly photographed astronomical objects in NASA's APOD!
I extracted the entities and then used Wikidata's SPARQL to fetch coordinates, which were mapped onto a nice basemap by NASA. Static image & more in 🧵 #rstats
Code: aman.bh/to/tt-apod
I extracted the entities and then used Wikidata's SPARQL to fetch coordinates, which were mapped onto a nice basemap by NASA. Static image & more in 🧵 #rstats
Code: aman.bh/to/tt-apod
January 19, 2026 at 1:24 PM
For #tidytuesday week 3, I tried mapping the most commonly photographed astronomical objects in NASA's APOD!
I extracted the entities and then used Wikidata's SPARQL to fetch coordinates, which were mapped onto a nice basemap by NASA. Static image & more in 🧵 #rstats
Code: aman.bh/to/tt-apod
I extracted the entities and then used Wikidata's SPARQL to fetch coordinates, which were mapped onto a nice basemap by NASA. Static image & more in 🧵 #rstats
Code: aman.bh/to/tt-apod
The biggest surprise was Wikidata.
It has structured translation data for thousands of works; which editions exist in which languages, linked to original works.
But it’s locked behind SPARQL queries, script-matching across alphabets, and author alias resolution. Nobody was using it for this.
It has structured translation data for thousands of works; which editions exist in which languages, linked to original works.
But it’s locked behind SPARQL queries, script-matching across alphabets, and author alias resolution. Nobody was using it for this.
March 9, 2026 at 3:46 PM
The biggest surprise was Wikidata.
It has structured translation data for thousands of works; which editions exist in which languages, linked to original works.
But it’s locked behind SPARQL queries, script-matching across alphabets, and author alias resolution. Nobody was using it for this.
It has structured translation data for thousands of works; which editions exist in which languages, linked to original works.
But it’s locked behind SPARQL queries, script-matching across alphabets, and author alias resolution. Nobody was using it for this.
NEU: Der Geburtsbundestagesbot verlinkt jetzt immer auch (dank Wikidata-SPARQL-Abfrage) den passenden Wikipedia-Artikel zum Geburtstagskind.
Wenn ich den Code aufgeräumt habe, stelle ich ihn auf GitHub.
Wenn ich den Code aufgeräumt habe, stelle ich ihn auf GitHub.
Ingeborg Philipp (PDS) hat heute Geburtstag!
Sie wäre 101 Jahre alt geworden.
Sie hat ab 1992 für 1 Wahlperiode im Bundestag gewirkt.
https://de.wikipedia.org/wiki/Ingeborg_Philipp
Sie wäre 101 Jahre alt geworden.
Sie hat ab 1992 für 1 Wahlperiode im Bundestag gewirkt.
https://de.wikipedia.org/wiki/Ingeborg_Philipp
January 19, 2026 at 5:27 PM
NEU: Der Geburtsbundestagesbot verlinkt jetzt immer auch (dank Wikidata-SPARQL-Abfrage) den passenden Wikipedia-Artikel zum Geburtstagskind.
Wenn ich den Code aufgeräumt habe, stelle ich ihn auf GitHub.
Wenn ich den Code aufgeräumt habe, stelle ich ihn auf GitHub.
Ich hab gerade eine SPARQL-Abfrage über Wikidata gemacht und die Antwort verblüfft mich: Es gibt Tatsache wesentlich mehr Frauen als Reiterstandbilder. Das hätte ich nicht gedacht.
September 16, 2026 at 9:24 AM
Ich hab gerade eine SPARQL-Abfrage über Wikidata gemacht und die Antwort verblüfft mich: Es gibt Tatsache wesentlich mehr Frauen als Reiterstandbilder. Das hätte ich nicht gedacht.
Really didn't want to go down the annual SPARQL rabbit hole again but it seems unavoidable. Noticed the default query for @frontiernav.net / Xenoblade X could use "blank nodes" (before, after). It's perfect for relationship traversal.
July 19, 2025 at 11:01 AM
Really didn't want to go down the annual SPARQL rabbit hole again but it seems unavoidable. Noticed the default query for @frontiernav.net / Xenoblade X could use "blank nodes" (before, after). It's perfect for relationship traversal.
Possiamo generare delle buone query SPARQL usando un LLM? Sembra di sì! (Ma chiediamo conferma a @giorgialodi.bsky.social)
LLM-based SPARQL Query Generation from Natural Language over Federated Knowledge Graphs (doi.org/10.48550/arX...)
LLM-based SPARQL Query Generation from Natural Language over Federated Knowledge Graphs (doi.org/10.48550/arX...)
December 10, 2024 at 3:49 PM
Possiamo generare delle buone query SPARQL usando un LLM? Sembra di sì! (Ma chiediamo conferma a @giorgialodi.bsky.social)
LLM-based SPARQL Query Generation from Natural Language over Federated Knowledge Graphs (doi.org/10.48550/arX...)
LLM-based SPARQL Query Generation from Natural Language over Federated Knowledge Graphs (doi.org/10.48550/arX...)
Continuing my sabbatical builder spree: Meet otel.eexplorer, your friendly open-source OpenTelemetry Entity explorer. Feedback welcome here or via GitHub.
github.com/mhausenblas/...
#opentelemetry #entity #explorer #visualization #knowledgebase #sparql
github.com/mhausenblas/...
#opentelemetry #entity #explorer #visualization #knowledgebase #sparql
May 8, 2026 at 12:43 PM
Continuing my sabbatical builder spree: Meet otel.eexplorer, your friendly open-source OpenTelemetry Entity explorer. Feedback welcome here or via GitHub.
github.com/mhausenblas/...
#opentelemetry #entity #explorer #visualization #knowledgebase #sparql
github.com/mhausenblas/...
#opentelemetry #entity #explorer #visualization #knowledgebase #sparql
I'm a colossal loser so building this tonight instead of having anything resembling a real life.
The below DBpedia queries are returning some weird results (last I checked, The Guardian isn't owned by the United Democratic Party of Belize), any suggestions? My SPARQL is admittedly rather rusty. 😓
The below DBpedia queries are returning some weird results (last I checked, The Guardian isn't owned by the United Democratic Party of Belize), any suggestions? My SPARQL is admittedly rather rusty. 😓
![It's two functions in Google AppScript:
function QueryDBPediaByName(nameString) {
const q = `SELECT DISTINCT ?owner ?ownerLabel WHERE {{
?newspaper a dbo:Newspaper ;
rdfs:label ?label;
dbo:owner ?owner .
?owner rdfs:label ?ownerLabel .
filter contains(?label,"${nameString}")
}}
LIMIT 1`;
const uri = `https://dbpedia.org/sparql?query=${encodeURIComponent(q)}&format=json`
const res = JSON.parse(UrlFetchApp.fetch(uri).getContentText());
console.log(res);
if (res.results.bindings.length) {
return res.results.bindings[0].ownerLabel.value;
}
return null;
}
function QueryDBPediaByDomain(domainiString) {
const q = `SELECT DISTINCT ?owner ?ownerLabel WHERE {{
?newspaper a dbo:Newspaper ;
dbo:website ?website ;
dbo:owner ?owner .
?owner rdfs:label ?ownerLabel .
FILTER(regex(?website, "{handle}", "i"))
}}
LIMIT 1`;
const uri = `https://dbpedia.org/sparql?query=${encodeURIComponent(q)}&format=json`
const res = JSON.parse(UrlFetchApp.fetch(uri).getContentText());
console.log(res);
if (res.results.bindings.length) {
return res.results.bindings[0].ownerLabel.value;
}
return null;
}](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:kkf4naxqmweop7dv4l2iqqf5/bafkreid6hslwqbq46mw34zwzsgxskb4ebrxqtqlxxcama7wl35nle3axze)
February 19, 2026 at 9:49 PM
I'm a colossal loser so building this tonight instead of having anything resembling a real life.
The below DBpedia queries are returning some weird results (last I checked, The Guardian isn't owned by the United Democratic Party of Belize), any suggestions? My SPARQL is admittedly rather rusty. 😓
The below DBpedia queries are returning some weird results (last I checked, The Guardian isn't owned by the United Democratic Party of Belize), any suggestions? My SPARQL is admittedly rather rusty. 😓
Our Knowledge on Web-Scale team is at #ISWC2025! 🎉
We’re sharing work on link prioritization, time functions in SPARQL, low-code ODRL tools, Trustflows, queryable VCs, client-side federation, plus tutorials on RDF/SPARQL 1.2 and RDF-Connect pipelines.
We’re sharing work on link prioritization, time functions in SPARQL, low-code ODRL tools, Trustflows, queryable VCs, client-side federation, plus tutorials on RDF/SPARQL 1.2 and RDF-Connect pipelines.
November 1, 2025 at 1:33 PM
Our Knowledge on Web-Scale team is at #ISWC2025! 🎉
We’re sharing work on link prioritization, time functions in SPARQL, low-code ODRL tools, Trustflows, queryable VCs, client-side federation, plus tutorials on RDF/SPARQL 1.2 and RDF-Connect pipelines.
We’re sharing work on link prioritization, time functions in SPARQL, low-code ODRL tools, Trustflows, queryable VCs, client-side federation, plus tutorials on RDF/SPARQL 1.2 and RDF-Connect pipelines.
Some nerdy types may also be interested to know that it has a SPARQL endpoint www.getty.edu/databases-to... 🤓
May 2, 2025 at 10:55 AM
Some nerdy types may also be interested to know that it has a SPARQL endpoint www.getty.edu/databases-to... 🤓