LongEval CLEF 2025 Lab
Longitudinal Evaluation of Model Performance
| Description | Dates | Tasks | Data | Submissions | Program | 2024 | 2023 |
LongEval at CLEF 2025: Longitudinal Evaluation of IR Systems on Web and Scientific Data
Matteo
Cancellieri, Alaa El-Ebshihy, Tobias Fink, Maik Fröbe, Petra Galuščáková, Gabriela González Sáez, Lorraine
Goeuriot, David Iommi, Jüri Keller, Petr Knoth, Philippe Mulhem, Florina Piroi, David Pride, Philipp
Schaer.
LongEval at CLEF 2025: Longitudinal Evaluation of IR Systems on Web and Scientific Data
Matteo Cancellieri, Alaa El-Ebshihy, Tobias Fink, Maik Fröbe, Petra Galuščáková, Gabriela González
Sáez, Lorraine Goeuriot, David Iommi, Jüri Keller, Petr Knoth, Philippe Mulhem, Florina Piroi, David Pride
and
Philipp Schaer.
Team OpenWebSearch at CLEF 2025: LongEval
Daria Alexander, Maik Fröbe, Gijs Hendriksen, Matthias Hagen, Djoerd Hiemstra, Martin Potthast and Arjen P.
de Vries.
CIR at LongEval 2025: Exploring Temporal Sensitivity in Web Retrieval
Florian Braun, Timo Busch, Muhammed Sirac Coban, Maryam El Ghadioui, Davit Hovhannisyan, Kristine Jonina,
Andreas Large, Felix Zhi Yong Lin, Eric Loewenstein, Lars Maaßen, Nadine Maron, Mark Henri Mörsheim, Joshua
Azimoh Nduka Ofunim, Vadims Romanovskis, Simon Alexander, Jan Witalla, Max Wollenberg, Jüri Keller and
Philipp Schaer.
DS@GT at LongEval: Evaluating Temporal
Performance in Web Search Systems and Topics with Two-Stage Retrieval
Anthony Miyaguchi, Imran Afrulbasha and Aleksandar Pramov
CIR_cluster at LongEval 2025: Clustering Query Variants for Temporal Generalization
Arthur Muanza Ndiema, Jüri Keller and Philipp Schaer
Overview of LongEval 2026