Several members of the CLASiK project team met at the LREC 2026 conference in Palma de Mallorca.
LREC is one of the most important conferences in the field of language resources and brought together nearly 2,000 researchers, with almost 1,000 papers presented (oral sessions or posters) in the main conference, and around 50 thematic workshops.
Among these workshops, the “Knowledge Graphs and Large Language Models” workshop, organized by Gilles Sérasset and other European researchers, attracted great interest from the community with 80 registered participants and 21 papers presented. This workshop provided an opportunity to take stock of community practices around the synergies between these two central domains of the CLASiK project.
Concerned about the environmental impact of our research, and in particular the impact of travel to scientific conferences, several researchers from Grenoble decided to take the train (and the boat) to get to Palma. We could not resist sharing below an evaluation of the impact of this choice (sorry for this occupational habit).
| Route (round trip from Grenoble) | Distance assumption | Emission factor used | Estimated emissions per person |
|---|---|---|---|
| Plane (direct flight Lyon → Palma and return) | ~1,100 km | 0.255 kgCO₂e / km (short-haul flight, radiative forcing included) | ~280 kgCO₂e |
| Round-trip train (Grenoble → Barcelona and back) | ~1,200 km | 0.003 kgCO₂e / km | ~3 kgCO₂e |
| Fast LNG ferry (Barcelona → Alcudia) | ~200 km | LNG passenger ferry: 0.108 kgCO₂e / km | ~22 kgCO₂e |
| Diesel ferry (Palma → Barcelona) | ~250 km | Diesel ferry + cabin: 0.207 kgCO₂e / km | ~41 kgCO₂e |
This means roughly 4.3 times fewer emissions for the train+boat option compared with flying, for a round trip.
Note: these values remain orders of magnitude 1, but we tried to provide an estimate that is as faithful as possible, especially for ferry impacts, which seem highly variable (depending on occupancy rate, ferry type, and comfort level2).
It is worth noting that a significant number of researchers (especially French ones) from the NLP community also chose to travel by ferry. Kudos to all of them.
Train and flight emissions calculated with impactco2.fr ↩︎
Ferry emissions calculated with https://alice-ecologie.fr/empreinte-carbone-ferry/ ↩︎