Biography:

He served as a chair, co-chair, area-chair, or program committee member of numerous conferences and workshops (including IJCAI, ECAI, and the annual international workshops on Qualitative Reasoning and Principles of Diagnosis).

In the German Computer Science Association (GI), he acted as the speaker of the Knowledge Representation and Reasoning Group (formerly Qualitative Modeling) for over 20 years and promoted organization of work on model-based systems in Europe as a member of the executive board of the MONET network of excellence.

He was a member of the first editorial board of the Journal of AI Research and is an editorial board member of the Artificial Intelligence Journal and the International Journal of Prognostics and Health Management