Steffen Rebennack

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About

Steffen Rebennack is a leading figure in optimization and operations research, with a focus on solving complex, real-world industrial layout and planning problems. His work bridges theoretical decomposition methods and practical engineering challenges, most notably through his research on the edge-constrained weighted two-layer crossing number problem (ECW2CN). In a highly cited 2021 paper, he introduced this novel crossing number problem, which arose directly from a layout planning challenge at BASF involving hose coupling stations. By applying Benders decomposition, Rebennack developed a method to find crossing-minimal assignments of tube-connected units to given positions, significantly improving efficiency in industrial facility design. With over 7 citations on this work alone, his contributions are recognized for their direct impact on chemical and process engineering logistics. Rebennack’s research exemplifies how advanced optimization techniques can solve tangible, large-scale problems, making him a key resource for students and researchers interested in integer programming, graph theory, and industrial applications of operations research.