Simon Ostermann

Dr. Simon Ostermann is a Senior Researcher and Deputy Director at the Multilinguality and Language Technology (MLT) lab within the German Research Center for Artificial Intelligence (DFKI). He leads the research group on Efficient and Explainable NLP (E&E), focusing on transparent and robust language models, particularly for low-resource languages and resource-constrained environments.

• Affiliation: DFKI, Saarland University
• Academic Role: Senior Researcher, Deputy Director, Research Group Lead

His research emphasizes mechanistic interpretability, language model compression, and data-efficient learning. He contributes to projects like lorAI (Low Resource AI) and DisAI (Combating Disinformation), integrating methods from Explainable AI and multimodal learning.

In teaching, he conducts seminars at Saarland University on topics such as Efficient NLP and Mechanistic Interpretability, expecting students to engage deeply with model internals and ethical deployment.

Scientific contributions include organizing workshops (COIN, LowResNLP) and shared tasks (SemEval 2018, 2025), alongside advising multiple PhD and MSc students in areas like language model adaptation and XAI systems.