Ulf Brefeld
Prof. Dr.
- Informatics
- Business informatics
Research areas
- 2025
Self-improvement for Computerized Adaptive Testing
Rudolph, Y. (Speaker), Neubauer, K. (Speaker) & Brefeld, U. (Coauthor)
16.09.2025Activity: Talk or presentation › Conference Presentations › Research
- 2024
PODIUMSDISKUSSION: Lehramtsstudium und/oder Künstliche Intelligenz? Ethische Herausforderungen in Bildung durch Technik.
Mah, D.-K. (Speaker), Brefeld, U. (Speaker), Broy, W. (Speaker) & Kück, T. J. (Moderator)
13.06.2024Activity: Participating in or organising an academic or articstic event › External workshops, courses, seminars › Transfer
- 2023
Masked Autoencoder Pretraining for Event Classification in Elite Soccer
Rudolph, Y. (Speaker) & Brefeld, U. (Coauthor)
18.09.2023Activity: Talk or presentation › talk or presentation in privat or public events › Research
Data-efficient Pattern Detection in Elite Soccer
Rudolph, Y. (Speaker), Faßmeyer, D. (Coauthor) & Brefeld, U. (Coauthor)
26.05.2023Activity: Talk or presentation › Conference Presentations › Research
- 2022
Modeling Conditional Dependencies in Multiagent Trajectories
Rudolph, Y. (Speaker) & Brefeld, U. (Coauthor)
28.03.2022Activity: Talk or presentation › Presentations (poster etc.) › Research
Detection of tactical patterns using semi-supervised graph neural networks
Anzer, G. (Speaker), Bauer, P. (Speaker), Brefeld, U. (Speaker) & Faßmeyer, D. (Speaker)
2022Activity: Talk or presentation › Conference Presentations › Research
- 2020
Graph Conditional Variational Models: Too Complex for Multiagent Trajectories?
Rudolph, Y. (Speaker), Brefeld, U. (Coauthor) & Dick, U. (Coauthor)
12.12.2020Activity: Talk or presentation › Presentations (poster etc.) › Research
Companion Proceedings of the 10th International Conference on Learning Analytics & Knowledge LAK20
Neubauer , K. (Participant) & Brefeld, U. (Participant)
25.03.2020 → 27.03.2020Activity: Participating in or organising an academic or articstic event › Conferences › Research
- 2018
MDP-based Itinerary Recommendation using Geo-Tagged Social Media
Gaonkar, R. (Speaker), Tavakol, M. (Speaker) & Brefeld, U. (Speaker)
24.10.2018Activity: Talk or presentation › Conference Presentations › Research
Concurrent Adaptive Tests for Formative Assessments in School Classes
Bengs, D. (Speaker), Brefeld, U. (Speaker) & Kröhne, U. (Speaker)
26.07.2018Activity: Talk or presentation › Conference Presentations › Research
Educational Data Mining - EDM 2018
Boubekki, A. (Coauthor), Jain, S. (Coauthor) & Brefeld, U. (Speaker)
15.07.2018 → 17.07.2018Activity: Participating in or organising an academic or articstic event › Conferences › Research
Exploiting the Frame for Active Learning in Multi-class Classification
Mair, S. (Coauthor) & Brefeld, U. (Coauthor)
15.07.2018 → 18.07.2018Activity: Talk or presentation › Conference Presentations › Research
European conference an Data Analysis -ECDA 2018
Gaonkar, R. (Coauthor), Tavakol, M. (Coauthor) & Brefeld, U. (Coauthor)
04.07.2018 → 06.07.2018Activity: Participating in or organising an academic or articstic event › Conferences › Research
Learning to rate player actions in multi-agent scenarios
Dick, U. (Speaker) & Brefeld, U. (Speaker)
11.01.2018Activity: Talk or presentation › Conference Presentations › Research
- 2017
Frame-based Matrix Factorizations
Mair, S. (Speaker), Boubekki, A. (Speaker), Brefeld, U. (Speaker), Mair, S. (Coauthor), Boubekki, A. (Coauthor) & Brefeld, U. (Coauthor)
11.09.2017 → 13.09.2017Activity: Talk or presentation › Conference Presentations › Research
THE EUROPEAN CONFERENCE ON MACHINE LEARNING & PRINCIPLES AND PRACTICE OF KNOWLEDGE DISCOVERY IN DATABASES 2017
Brefeld, U. (Coauthor)
09.2017Activity: Participating in or organising an academic or articstic event › External workshops, courses, seminars › Research
Learning to Rate Player Actions on the Example of Soccer
Brefeld, U. (Speaker) & Dick, U. (Speaker)
26.06.2017 → 28.06.2017Activity: Talk or presentation › Conference Presentations › Research
- 2016
A Learning Agent for Parameter Adaptation in Speeded Tests
Bengs, D. (Speaker) & Brefeld, U. (Speaker)
23.09.2016 → 27.09.2016Activity: Talk or presentation › Conference Presentations › Research
School of Management and Technology (Organisational unit)
Brefeld, U. (Office)
01.04.2016 → …Activity: Membership › Leuphana academic councils and committees › Leuphana Academic Committees
- 2014
Structured Prediction in Social Contexts
Brefeld, U. (Speaker)
15.09.2014Activity: Talk or presentation › Conference Presentations › Research