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2026-01-08
Eventual Interoperability
A pragmatic approach to interoperability: model your data richly for your own needs, then allow the eventual creation of one‑to‑many alignments.
interoperability -
2025-11-28
SEMIC2025 Trip report
In November 2025, I went to the SEMIC conference in Copenhagen. This is the trip report, in which I talk about data spaces, LDES and the EIF.
conferences -
2025-09-30
Named graphs and RDF messages
I’ve seen named graphs being called the most horrendous mistake in RDF standardization, to a necessary feature for which, without it, RDF wouldn’t be where it is today. In this blog post I try to explain my interpreta...
linkeddata -
2025-09-08
SEMANTiCS2025 Trip report
I went to SEMANTiCS2025 with the team in Vienna. I will especially remember: the keynote of Hannah Bast, the fish bowl discussion, and the work on the Jelly serialization. Our team took on quite some responsibilities ...
conferences -
2025-09-03
Four types of specification artefacts
Interoperability isn’t about creating the one standard to rule them all. It’s about reusable artefacts. I argue there are four types: vocabularies, application profiles, interaction patterns, and implementation guides...
interoperability -
2025-08-22
Interoperability ambition levels
Interoperability isn’t just about connecting two systems—it’s about building reusable data and interaction patterns that work across domains. This post explores three ambition levels, from ecosystem-specific integrati...
interoperability -
2021-09-03
Escaping the false dichotomy of API vs. data dump with Linked Data Event Streams
Data publishers often face a familiar but painful choice — should they provide a full data dump or a querying API? With Linked Data Event Streams (LDES), we provide a way out.
ldes -
2019-12-31
What we did in 2019 and will be doing in 2020
Report on our team’s research in 2019 and what we will be doing in 2020.
research -
2019-05-27
Real-time election results as Open Data
Organizing and participating in the first electathon
opinion -
2019-03-21
The next steps for Open Data Portals? Data recipes!
How do machines find specific datasets useful for their use cases?
opinion -
2018-12-30
Our research in 2019 on automating data reuse
What my team is going to research in 2019 – cost-efficiency of Web APIs, user-perceived performance and how to raise the interoperability of data sources.
research -
2017-10-10
We need better Open Data Interfaces
A vacancy at IDLab for an Open Data Architect
vacancies -
2017-02-23
CC0 is the best open data license
Open datasets are only worth as much as they get reused by others. To what extent do we want to raise legal barriers in order to safeguard interests other than maximizing uptake?
Open Data -
2017-01-15
Route Planning services should not be built by governmental organizations
Is it a government’s task to build apps? If not, should a government build APIs? Or should they only publish their data? A question that took me a long time to answer. A possible solution to the mobility...
opentransport -
2016-04-01
I do not want your Open Data API, I’d rather scrape your website
Why don’t you like APIs for Open Data? A question I get way too often What is not to like about APIs? Today, if you want to be cool, you have an API for third parties to integrate with basically anything...
Open Data