Interview Series: In Conversation with BiblioTech Hackathon Participants
The following interview was conducted by Sam Goven, a master’s student in Journalism at KU Leuven, with Andreas Ketele, BiblioTech Hackathon participant. Andreas is a master’s student in Digital Humanities and works as legal counsel for the Agency Opgroeien. Andreas’ team, Inked and Stamped, worked with the postcards collection. You can learn more about the team’s work by having a look at their project poster in the BiblioTech Zenodo community and by visiting their project website.
The BiblioTech Hackathon is a 10-day event organized by KU Leuven Libraries and the Faculty of Arts. Students, researchers, and staff members of KU Leuven worked in multidisciplinary teams with digitized collections from KU Leuven Libraries. The theme of the 2026 edition was travel, which was reflected in the selected datasets: historical postcards and historical travelogues. More information about the hackathon and its results can be found on the BiblioTech 2026 website.

To start off, could you tell us a bit about your academic background? Had you participated in a hackathon before, and what drew you to this one?
I have a degree in law and have been working for a few years now. At the same time, I’ve always been very interested in IT and programming, so I was really happy when I discovered that there is an advanced master’s program in Digital Humanities. The program is a collaboration between the Faculty of Engineering Science and the Faculty of Arts, and it is specifically designed for people with a humanities background who want to learn how to program and how to use computational methods to strengthen their own field. For me, that felt like a perfect match, and I really enjoy it.
During the program, we learned about the hackathon and were encouraged to participate. What interested me most was the chance to apply what we were learning and really put it into practice. The program does include practical components, of course, but there is still so much more to learn when you can actually work with a large and complex dataset like the one we received during the hackathon.
This was also my first hackathon. I had done some programming before, but I had never participated in a hackathon.
Your team won the prize for best enrichment. Could you briefly describe your project?
We worked with the postcard dataset. One of the first things we did was index the postcards based on their use of color. From that, we were able to derive several insights, for example, who was printing in color, when this happened, and how that evolved over time. In addition, we made the collection searchable by the places depicted on the postcards. Finally, we extracted a number of postage stamps, allowing users to explore those in more detail as well. This part of the project was still in progress: we had several additional features in the pipeline, but they were not fully completed yet, so we weren’t able to deliver everything we had initially envisioned.
The final outcome is a website where users can explore both the postcards and the postage stamps, combined with a poster presenting our research findings.
Did you have a clear idea of what a hackathon actually is? What were your expectations, and did you feel that, with your background in Digital Humanities, you had the skills needed to get started?
Yes and no, let’s put it that way. In general, I try not to have too many expectations and to step into things with an open mind. As for having the necessary skills, yes, to some extent. In the sense that I had already done a bit of programming.
But for me, having the necessary skills often sounds like you’re expected to know everything already and be able to build a complete project in five minutes. And what I really liked about this hackathon was that this wasn’t the case at all. It was very explicitly communicated that this was also a space to learn, and that’s exactly what we did. We learned a lot along the way, which made the whole experience even more enjoyable.
At the ‘Meet the Data, Meet the People’ event, you were introduced to the data for the first time. What was the brainstorming process like? Did you feel overwhelmed with ideas, or was it clear early on which direction you wanted to take?
It was mainly a lot of different ideas coming together at first. Michiel, our team leader, did a great job of getting the conversation going, and from there we continued brainstorming and gradually exploring the data in more depth. The dataset itself was enormous, around 200 gigabytes, which is not something you can fully grasp in just a few hours. So we took time to really dig into it after the event and see what was possible.
What I really enjoyed was that process of exploration. We reflected on our ideas and experimented a lot, and that’s exactly what a hackathon is about for me: discovering possibilities along the way. If you already know everything in advance and the only thing left is implementation, you might actually miss interesting directions.
As we explored the data together, we also discovered each other’s strengths, which is one of the nicest aspects of working in a group like this. Everyone in the team was genuinely motivated, and there was a strong sense of what can we create together. That kind of shared energy is really the magic of a hackathon.
Could you describe your role in the project? Was it in line with what you were expecting?
I mainly contributed by programming and working on the content. I supported others whenever I could and asked for help myself when I needed it. Overall, it was very much a team effort: we shared tasks and built on each other’s strengths.
How would you describe the entire process from start to finish? What was your own experience like?
It was a fantastic experience. I’m usually not someone who uses very strong words, but this really was fantastic. Programming on your own can be enjoyable too, you can build interesting things that way, but here we were working as a group of highly motivated people. We collaborated very well and benefited enormously from all the support we received along the way.
That support was really essential: the infrastructure, the help, the tips, and the exchange of ideas. It made a huge difference, because you learn so much and can really move forward. A concrete example of that support is my experience with an AI model. At one point, I was working on a specific task, and the first steps went well. But when I reached a stage involving dimensionality reduction, the process ran for five minutes and then crashed with an error saying it was trying to allocate 40 gigabytes of RAM. Having access to a supercomputer where you can offload that workload is incredibly valuable, and frankly, also really exciting.
What I also loved was, on the one hand, building something ourselves, and on the other hand, seeing the final presentations from the other teams. I was genuinely impressed by what the other teams had created.
As an outsider, I also had the feeling that there was a lot of support around the hackathon, and that the people from the organizing team put a great deal of passion into it. That really stood out to me, whenever I spoke with them, you could hear how genuinely enthusiastic they were.
That’s actually something I’d really like to add as well, because I’m very grateful for it. I’ve also told them this directly: for me, this has been the best experience of my entire KU Leuven education so far, and I’ve studied in Leuven for several years. Being encouraged to explore, and being in such a positive environment where you can really feel that everyone wants to move forward, was incredibly special. It felt almost magical.
You’ve mentioned several times that you learned a lot during the hackathon. Which specific skills or aspects do you think you’ll be able to apply in the future?
Well, I’m already working on projects using the tips and techniques I picked up during the hackathon. I also received additional advice from some of the participants during the final presentations that I want to look into. So I do already have a few ideas I’d like to explore in the future.
The only downside, and I say this partly as a joke, is that now I’ll have to do it on my own (laughs).
Were there any roadblocks during the process? Did you run into things that didn’t go as expected, and how did you deal with them?
Of course, everyone in the team ran into obstacles at some point. And how did we deal with that? Partly by doing our own research, partly through trial and error, and partly by asking for help. Looking back, we probably could have asked for help even more often. Once you realize that something really isn’t working after a while, it’s important to look for a different approach.
That’s also one of the things I really like about a hackathon: you’re allowed to hack, not in the sense of breaking into things, of course, but in the original sense of creatively finding ways to make things work.
Another challenge was combining the hackathon with my situation as a working student. It was made very clear in advance that participation was possible for working students as well, and that the duration of the hackathon was designed with that in mind. Still, it was quite intense, and I ended up putting in a lot of hours. That was definitely challenging, but then again, if everything went perfectly smoothly, it wouldn’t really be a hackathon. I learned a lot from that experience too, and I’m very grateful to all my teammates for the great collaboration.
As a final question, what advice would you give to future teams taking part in a hackathon?
First of all, I would say: enjoy the experience, and make sure you set aside enough time. That’s really important. We had the incredible luxury of being able to ask questions and get support. We did make use of that, but looking back, I think I could have done so even more, so I would definitely encourage future teams to take full advantage of that opportunity.
It’s also crucial to communicate well within your group, so that everyone is working towards the same goal and pulling in the same direction. That’s not always easy, but it really makes a difference.
And finally, don’t be afraid to experiment. A hackathon is exactly the right place to try things out and explore ideas!







Este curso propone un espacio de formación y reflexión orientado a comprender cómo se investiga en el espacio digital desde las HD, abordando tanto sus fundamentos epistemológicos como sus metodologías y herramientas prácticas


