Pieter Colpaert
@pietercolpaert.be
Professor #interoperability and #knowledgegraphs at #Ghent University
Building Linked Data Event Streams #ldes
Personal website: https://pietercolpaert.be
Team website: https://knows.idlab.ugent.be/
Building Linked Data Event Streams #ldes
Personal website: https://pietercolpaert.be
Team website: https://knows.idlab.ugent.be/
Next week we’re hosting the second in-person #LDES workshop at #SEMIC2025.
Piotr Sowiński will be the keynote speaker. He developed Jelly, a binary RDF format for syncing RDF datasets at speeds we can only aspire to.
What is his opinion about the work we’re doing? What can we learn from eachother?
Piotr Sowiński will be the keynote speaker. He developed Jelly, a binary RDF format for syncing RDF datasets at speeds we can only aspire to.
What is his opinion about the work we’re doing? What can we learn from eachother?
November 18, 2025 at 2:47 PM
Next week we’re hosting the second in-person #LDES workshop at #SEMIC2025.
Piotr Sowiński will be the keynote speaker. He developed Jelly, a binary RDF format for syncing RDF datasets at speeds we can only aspire to.
What is his opinion about the work we’re doing? What can we learn from eachother?
Piotr Sowiński will be the keynote speaker. He developed Jelly, a binary RDF format for syncing RDF datasets at speeds we can only aspire to.
What is his opinion about the work we’re doing? What can we learn from eachother?
Oh boy it’s time (again)! My long awaited Pebble arrived!
Quite a remarkable story for a product, that’s now an open source and open hardware project. Follow @ericmigi.com on the topic!
Quite a remarkable story for a product, that’s now an open source and open hardware project. Follow @ericmigi.com on the topic!
November 18, 2025 at 1:15 PM
Oh boy it’s time (again)! My long awaited Pebble arrived!
Quite a remarkable story for a product, that’s now an open source and open hardware project. Follow @ericmigi.com on the topic!
Quite a remarkable story for a product, that’s now an open source and open hardware project. Follow @ericmigi.com on the topic!
Toch bizar hoe na al die jaren er amper innovatie is geweest in weerstations voor thuis, en hoe die dingen er verdorie lelijk blijven uitzien.
Iemand een suggestie die er mooier uitziet, liefst met open data/open source/open hardware?
Iemand een suggestie die er mooier uitziet, liefst met open data/open source/open hardware?
November 9, 2025 at 8:47 AM
Toch bizar hoe na al die jaren er amper innovatie is geweest in weerstations voor thuis, en hoe die dingen er verdorie lelijk blijven uitzien.
Iemand een suggestie die er mooier uitziet, liefst met open data/open source/open hardware?
Iemand een suggestie die er mooier uitziet, liefst met open data/open source/open hardware?
Ieben Smessaert and Julián Rojas will demo SPARQL time functions — treating partial & floating dates as intervals for better temporal queries. Implemented in Comunica.
🔗 smessie.github.io/Article-ISWC...
#ISWC2025
🔗 smessie.github.io/Article-ISWC...
#ISWC2025
November 1, 2025 at 1:33 PM
Ieben Smessaert and Julián Rojas will demo SPARQL time functions — treating partial & floating dates as intervals for better temporal queries. Implemented in Comunica.
🔗 smessie.github.io/Article-ISWC...
#ISWC2025
🔗 smessie.github.io/Article-ISWC...
#ISWC2025
Julián Rojas presents our #Trustflows model: combining CQRS + Event Sourcing with Linked Data to decouple reads/writes and add trust contexts. Validated in the PACSOI health use case.
🔗 ceur-ws.org/Vol-4085/pap...
#ISWC2025
🔗 ceur-ws.org/Vol-4085/pap...
#ISWC2025
November 1, 2025 at 1:33 PM
Julián Rojas presents our #Trustflows model: combining CQRS + Event Sourcing with Linked Data to decouple reads/writes and add trust contexts. Validated in the PACSOI health use case.
🔗 ceur-ws.org/Vol-4085/pap...
#ISWC2025
🔗 ceur-ws.org/Vol-4085/pap...
#ISWC2025
Julián Rojas, Arthur Vercruysse and Ieben Smessaert lead the RDF-Connect tutorial — building provenance-aware, multilingual streaming pipelines. Let’s create a weather KG for Nara 🇯🇵!
🔗 rdf-connect.github.io/Tutorial-ISW...
#ISWC2025
🔗 rdf-connect.github.io/Tutorial-ISW...
#ISWC2025
November 1, 2025 at 1:33 PM
Julián Rojas, Arthur Vercruysse and Ieben Smessaert lead the RDF-Connect tutorial — building provenance-aware, multilingual streaming pipelines. Let’s create a weather KG for Nara 🇯🇵!
🔗 rdf-connect.github.io/Tutorial-ISW...
#ISWC2025
🔗 rdf-connect.github.io/Tutorial-ISW...
#ISWC2025
Jonni Hanski and Ruben Taelman explore automated client-side federation for Wikidata after its graph split. Shows when automation can replace manual SERVICE clauses.
🔗 www.rubensworks.net/raw/publicat...
#ISWC2025
🔗 www.rubensworks.net/raw/publicat...
#ISWC2025
November 1, 2025 at 1:33 PM
Jonni Hanski and Ruben Taelman explore automated client-side federation for Wikidata after its graph split. Shows when automation can replace manual SERVICE clauses.
🔗 www.rubensworks.net/raw/publicat...
#ISWC2025
🔗 www.rubensworks.net/raw/publicat...
#ISWC2025
Ruben Taelman also leads a tutorial on RDF & SPARQL 1.2 — a hands-on intro to the first spec update in a decade! Covers motivations, RDF-star, triple-terms & reification.
🔗 www.w3.org/Talks/2025/i...
#ISWC2025
🔗 www.w3.org/Talks/2025/i...
#ISWC2025
November 1, 2025 at 1:33 PM
Ruben Taelman also leads a tutorial on RDF & SPARQL 1.2 — a hands-on intro to the first spec update in a decade! Covers motivations, RDF-star, triple-terms & reification.
🔗 www.w3.org/Talks/2025/i...
#ISWC2025
🔗 www.w3.org/Talks/2025/i...
#ISWC2025
Ruben Eschauzier and Ruben Taelman present “Revisiting Link Prioritization…”:evaluating link prioritization in #Solid environments. Defines the R3 metric, tests in Comunica, finds no gain over FIFO.
🔗 rubeneschauzier.github.io/r3-metric-da...
#ISWC2025
🔗 rubeneschauzier.github.io/r3-metric-da...
#ISWC2025
November 1, 2025 at 1:33 PM
Ruben Eschauzier and Ruben Taelman present “Revisiting Link Prioritization…”:evaluating link prioritization in #Solid environments. Defines the R3 metric, tests in Comunica, finds no gain over FIFO.
🔗 rubeneschauzier.github.io/r3-metric-da...
#ISWC2025
🔗 rubeneschauzier.github.io/r3-metric-da...
#ISWC2025
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.
Named graphs in #RDF (2014) are still controversial after all this time and I don’t think they should be.
While their semantics were left open, functionally we all use them as contextual assertions anyway. Prove me wrong 🤓
👉 pietercolpaert.be/linkeddata/2...
#linkeddata #knowledgegraphs
While their semantics were left open, functionally we all use them as contextual assertions anyway. Prove me wrong 🤓
👉 pietercolpaert.be/linkeddata/2...
#linkeddata #knowledgegraphs
September 30, 2025 at 10:17 PM
Named graphs in #RDF (2014) are still controversial after all this time and I don’t think they should be.
While their semantics were left open, functionally we all use them as contextual assertions anyway. Prove me wrong 🤓
👉 pietercolpaert.be/linkeddata/2...
#linkeddata #knowledgegraphs
While their semantics were left open, functionally we all use them as contextual assertions anyway. Prove me wrong 🤓
👉 pietercolpaert.be/linkeddata/2...
#linkeddata #knowledgegraphs
the expert group on the Next Generation European Interoperability Framework (EIF) I’m part of is launching a survey to take your ideas into account. Do you have ideas about interoperability governance? Help us out: interoperable-europe.ec.europa.eu/collection/c...
September 16, 2025 at 7:06 AM
the expert group on the Next Generation European Interoperability Framework (EIF) I’m part of is launching a survey to take your ideas into account. Do you have ideas about interoperability governance? Help us out: interoperable-europe.ec.europa.eu/collection/c...
On my way home after a fruitful #semantics2025! During the closing ceremony I had to honour to invite the audience to #semantics2026 in one of the most beautiful cities in the world. See you next year in Ghent!
September 5, 2025 at 7:16 PM
On my way home after a fruitful #semantics2025! During the closing ceremony I had to honour to invite the audience to #semantics2026 in one of the most beautiful cities in the world. See you next year in Ghent!
As Linked Data practitioners we know vocabularies and shapes, but that’s not enough. Full interoperability needs two more artefacts: reusable interaction patterns across domains, and implementation guides to help developers avoid endless choices.
Long read: pietercolpaert.be/interoperabi...
Long read: pietercolpaert.be/interoperabi...
September 3, 2025 at 2:43 PM
As Linked Data practitioners we know vocabularies and shapes, but that’s not enough. Full interoperability needs two more artefacts: reusable interaction patterns across domains, and implementation guides to help developers avoid endless choices.
Long read: pietercolpaert.be/interoperabi...
Long read: pietercolpaert.be/interoperabi...
Next week, we’re organizing the RDF-Connect tutorial at @semantics-conf.bsky.social, so today we’re testing out the tutorial at the office and with the partners of our #DiSHACLed project!
👉 rdf-connect.github.io
#semantics2025
👉 rdf-connect.github.io
#semantics2025
August 25, 2025 at 12:58 PM
Next week, we’re organizing the RDF-Connect tutorial at @semantics-conf.bsky.social, so today we’re testing out the tutorial at the office and with the partners of our #DiSHACLed project!
👉 rdf-connect.github.io
#semantics2025
👉 rdf-connect.github.io
#semantics2025
One-off integrations don’t scale. We need higher ambitions as data providers building
1️⃣ within an ecosystem (JSON Schemas, strict API contracts, ...)
2️⃣ across ecosystems (RDF vocabularies, SHACL profiles, reusable API features)
3️⃣ inter-engine (AI agents & logic)
👉 pietercolpaert.be/interoperabi...
1️⃣ within an ecosystem (JSON Schemas, strict API contracts, ...)
2️⃣ across ecosystems (RDF vocabularies, SHACL profiles, reusable API features)
3️⃣ inter-engine (AI agents & logic)
👉 pietercolpaert.be/interoperabi...
August 25, 2025 at 11:32 AM
One-off integrations don’t scale. We need higher ambitions as data providers building
1️⃣ within an ecosystem (JSON Schemas, strict API contracts, ...)
2️⃣ across ecosystems (RDF vocabularies, SHACL profiles, reusable API features)
3️⃣ inter-engine (AI agents & logic)
👉 pietercolpaert.be/interoperabi...
1️⃣ within an ecosystem (JSON Schemas, strict API contracts, ...)
2️⃣ across ecosystems (RDF vocabularies, SHACL profiles, reusable API features)
3️⃣ inter-engine (AI agents & logic)
👉 pietercolpaert.be/interoperabi...
I think I’ve just made a very similar picture.
My most sincere condolences Toon
My most sincere condolences Toon
July 1, 2025 at 8:20 PM
I think I’ve just made a very similar picture.
My most sincere condolences Toon
My most sincere condolences Toon
Want to widen your set of skills with Linked Data/RDF, #knowledgegraphs, #LDES, Solid, ontologies, Web APIs, data interoperability, etc?
All our courses are now listed on our website! Next up: the VAIA/UGain course on Linked Data & Solid starting in September!
knows.idlab.ugent.be/education/co...
All our courses are now listed on our website! Next up: the VAIA/UGain course on Linked Data & Solid starting in September!
knows.idlab.ugent.be/education/co...
March 24, 2025 at 8:02 AM
Want to widen your set of skills with Linked Data/RDF, #knowledgegraphs, #LDES, Solid, ontologies, Web APIs, data interoperability, etc?
All our courses are now listed on our website! Next up: the VAIA/UGain course on Linked Data & Solid starting in September!
knows.idlab.ugent.be/education/co...
All our courses are now listed on our website! Next up: the VAIA/UGain course on Linked Data & Solid starting in September!
knows.idlab.ugent.be/education/co...
Ik ben wellicht wat aan het overreageren, maar kijk... Luminus stuurt mij massa’s reclame (papier, website en mail) over of ik niet maandelijks extra wil betalen om ervoor te zorgen dat ik verslaafd word aan achter mijn kinderen te lopen om te zeggen dat ze het licht moeten uitdoen.
February 23, 2025 at 11:10 AM
Ik ben wellicht wat aan het overreageren, maar kijk... Luminus stuurt mij massa’s reclame (papier, website en mail) over of ik niet maandelijks extra wil betalen om ervoor te zorgen dat ik verslaafd word aan achter mijn kinderen te lopen om te zeggen dat ze het licht moeten uitdoen.
Okay, ik lees ambities rond data en digitalisering in het regeerakkoord. Hoopvol!
February 1, 2025 at 9:18 PM
Okay, ik lees ambities rond data en digitalisering in het regeerakkoord. Hoopvol!
Dan maakt een mens een derde kind om aan halve prijs te kunnen rijden met de trein, LAP! En nu @sncb-nmbs.bsky.social?
January 2, 2025 at 6:41 PM
Dan maakt een mens een derde kind om aan halve prijs te kunnen rijden met de trein, LAP! En nu @sncb-nmbs.bsky.social?
Zo, da’s dan ook weeral geregeld
December 21, 2024 at 1:35 PM
Zo, da’s dan ook weeral geregeld
Today we have prof. Daniel de Leng from Linköping University visiting our team, giving a talk on RDF Stream Reasoning.
Tomorrow we’ll have a 2 day international workshop in Kortrijk on the topic: streamreasoning.org/events/srw20...
Tomorrow we’ll have a 2 day international workshop in Kortrijk on the topic: streamreasoning.org/events/srw20...
December 11, 2024 at 12:29 PM
Today we have prof. Daniel de Leng from Linköping University visiting our team, giving a talk on RDF Stream Reasoning.
Tomorrow we’ll have a 2 day international workshop in Kortrijk on the topic: streamreasoning.org/events/srw20...
Tomorrow we’ll have a 2 day international workshop in Kortrijk on the topic: streamreasoning.org/events/srw20...
You can determine the age of a chrismass tree by counting the layers of tape around the box
December 8, 2024 at 1:49 PM
You can determine the age of a chrismass tree by counting the layers of tape around the box