iiinova — where your digital self keeps evolving

Pieter Colpaert @pietercolpaert.be · 22/09/2026

I just published a paper with @patrickhochstenbach.net about building rule engines in the age of AI. I see this as a cornerstone for #Trustflows: interoperable, trustworthy data flows need rule engines that evaluate policies locally and consistently ↓ pietercolpaert.be/papers/seman...

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Pieter Colpaert @pietercolpaert.be · 21/09/2026

Jelly-RDF allows to encode RDF Messages in a binary protobuf format. I was always sceptical whether that could really make a difference in the JS world, as I found parsing N-Quads was already quite fast and compresses nicely, yet... It turns out I was wrong. Repo: github.com/pietercolpae...

Jelly-RDF in JS is much faster to parse than TriG

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Pieter Colpaert @pietercolpaert.be · 09/09/2026

I’ve built a new website for #LDES. Feedback welcome! ldes.tech

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Pieter Colpaert @pietercolpaert.be · 04/09/2026

Our next #TrustTriggers event in collaboration with KG4DI is approaching! Keynote by prof. Marta Sabou on why the future of AI needs decent knowledge management, followed by two cases of AI and knowledge management put into practice. Info and registration: trustflows.eu/events/2026/...

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Pieter Colpaert @pietercolpaert.be · 18/08/2026

In times of rapid change we need organizations like Open Knowledge Belgium to stress the importance of openness. We’re looking for new volunteers to join the board. Treasurer, secretary, project funding, IT person, advocacy… there’s plenty to help with. Interested? Let me know! openknowledge.be

A world where knowledge creates power for the many, not the few

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Pieter Colpaert @pietercolpaert.be · 15/07/2026

Om nog maar te zwijgen van de regels met 3 kinderen over wat ik wel en niet kan aftrekken van de belastingen. De default form heeft te weinig rijen dus ik moet zelf een hele sheet aanmaken.

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Pieter Colpaert @pietercolpaert.be · 25/06/2026

September promises to be a very busy #Trustflows events month! * 14th: #TrustTriggers 2 * 15-17: @semantics-conf.bsky.social * 18th: @athumi.bsky.social ’s Belgian Data Spaces day in Brussels More info and registration at trustflows.eu

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Pieter Colpaert @pietercolpaert.be · 19/06/2026

Since 2008, irail.be exists as an API and webapp for building the best mobility experience possible. Want to help building the slickest possible Web UI for planning trains? There’s now a new github repo for that that only contains the client-side parts: github.com/iRail/irail.be

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Pieter Colpaert @pietercolpaert.be · 17/06/2026

I wrote something in which I show how RDF, SHACL, OWL, SKOS and N3 can support automated Linked Data alignments and eventual interoperability, all in the browser using my recently published rdfjs-inference-engine npm library 🚀 pietercolpaert.be/linkeddata/2...

The most complex demo given in the post concluding the story

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Pieter Colpaert @pietercolpaert.be · 17/06/2026

Nice! Belgium has a new Open Data portal for public transport GTFS data by BMC, covering NMBS/SNCB, De Lijn, TEC, MIVB/STIB and more: data.belgianmobility.io/en/data.html A welcome step for easier reuse of Belgian mobility data 🚆🚌 #OpenData #GTFS #Mobility

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Pieter Colpaert @pietercolpaert.be · 11/06/2026

What makes data trustworthy enough for people or their agents to act on it? I wrote about Linked Data based “trust triggers” that can give systems good reasons to act. pietercolpaert.be/interoperabi...

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Pieter Colpaert @pietercolpaert.be · 04/05/2026

Missed the first #TrustTriggers event? We’re organizing the second one the 14th of September, one day before the @semantics-conf.bsky.social Conference. Slides of the first edition available here: trustflows.eu/events/2026/...

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Pieter Colpaert @pietercolpaert.be · 13/04/2026

1 week before the #trusttriggers event we’re organizing at De Krook in Ghent next week: we’ll dive into EU-wide digital identity through 3 use cases: water quality, digital product passports, and local council decisions. Registrations: trustflows.eu/events/2026/...

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Pieter Colpaert @pietercolpaert.be · 11/03/2026

The #Trustflows community launches #TrustTriggers: events combining a cross-domain Trustflows topic, networking, and 3 concrete use cases. First edition: 20 April at De Krook, Ghent. Program and registration at trustflows.eu/events/2026/...

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Pieter Colpaert @pietercolpaert.be · 26/01/2026

Call for papers alert! The 4th Semantics in Dataspaces organized together with the European Semantic Web Conference (ESWC) welcomes contributions trying to solve one of our W3C Community Group’s challenges! dbis.rwth-aachen.de/SDS26/ #semantics #knowledgegraphs #dataspaces

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Pieter Colpaert @pietercolpaert.be · 15/01/2026

Next Monday we’re organizing the closing event of the SolidLab research project in De Krook - Ghent, where we’ll launch our next steps with the #Trustflows community. Registration and program: solidcommunity.be/events/solid... The charter of the new community: trustflows.eu/charter

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Pieter Colpaert @pietercolpaert.be · 09/01/2026

There’s a tension between being semantically rich, and being semantically aligned. Eventual #interoperability is a new term I propose to indicate that you can do one after the other pietercolpaert.be/interoperabi...

Reusable specifications stack: project goals → interaction patterns → shapes → vocabularies → alignments.

The burden of aligning data has always been on the integrator. Linked Data is not about shifting this burden to the data producers entirely, but about distributing the burden equally in the ecosystem.

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Pieter Colpaert @pietercolpaert.be · 18/12/2025

On my way to the network of interoperability event of Digital Flanders

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Pieter Colpaert @pietercolpaert.be · 03/12/2025

Want to follow a course in #Interoperability, #LinkedData and #KnowledgeGraphs in Ghent? In February 2026, we relaunch our course on Knowledge Graphs, open to both master’s students and made available as micro-credential to professionals. Enrol here: www.ugain.ugent.be/MCKG2026.htm

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Pieter Colpaert @pietercolpaert.be · 18/11/2025

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?

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Pieter Colpaert @pietercolpaert.be · 18/11/2025

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!

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Pieter Colpaert @pietercolpaert.be · 09/11/2025

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?

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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

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Pieter Colpaert @pietercolpaert.be · 01/11/2025

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.

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Pieter Colpaert @pietercolpaert.be · 30/09/2025

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

A TRiG sample of using named graphs for various purposes

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Pieter Colpaert @pietercolpaert.be · 16/09/2025

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...

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Pieter Colpaert @pietercolpaert.be · 05/09/2025

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!

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Pieter Colpaert @pietercolpaert.be · 03/09/2025

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...

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Pieter Colpaert @pietercolpaert.be · 25/08/2025

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

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Pieter Colpaert @pietercolpaert.be · 25/08/2025

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...

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Pieter Colpaert @pietercolpaert.be · 18/07/2025

Onze Hibiscus bloeit altijd exact op de eerste dag van de Gentse Feesten. Zo weten we dat ook weer #gf25

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Pieter Colpaert @pietercolpaert.be · 01/07/2025

I think I’ve just made a very similar picture. My most sincere condolences Toon

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Pieter Colpaert @pietercolpaert.be · 24/03/2025

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...

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Pieter Colpaert @pietercolpaert.be · 23/02/2025

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.

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Pieter Colpaert @pietercolpaert.be · 01/02/2025

Okay, ik lees ambities rond data en digitalisering in het regeerakkoord. Hoopvol!

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Pieter Colpaert @pietercolpaert.be · 02/01/2025

Dan maakt een mens een derde kind om aan halve prijs te kunnen rijden met de trein, LAP! En nu @sncb-nmbs.bsky.social?

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Pieter Colpaert @pietercolpaert.be · 21/12/2024

Zo, da’s dan ook weeral geregeld

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Pieter Colpaert @pietercolpaert.be · 11/12/2024

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...

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Pieter Colpaert @pietercolpaert.be · 08/12/2024

You can determine the age of a chrismass tree by counting the layers of tape around the box

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Pieter Colpaert @pietercolpaert.be · 30/11/2024

The ever amazing fosstodon.org/@dylanvanass.... successfully defended his PhD yesterday evening, supervised by @natadimou.bsky.social and myself! More information about his work can be found at dylanvanassche.be

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Pieter Colpaert @pietercolpaert.be · 26/11/2024

Lifehack: tired of seeing annoying advertising when reading news? Visit a bass guitar website and accept all cookies! Your news will now be surrounded by awesome bass guitars.

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Pieter Colpaert @pietercolpaert.be · 18/11/2024

Last week, Dwight Van Lancker was at #ISWC2024 in Maryland to present our work of the last years with Digitaal Vlaanderen on building a Smart Data Space (VSDS). Pre-print of the in-use track paper: pietercolpaert.be/papers/prepr...

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