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math.NA2023
IRKA is a Riemannian Gradient Descent Method
Petar Mlinarić, Christopher A. Beattie, Zlatko Drmač +1
The iterative rational Krylov algorithm (IRKA) is a commonly used fixed-point iteration developed to minimize the model order reduction error. In this work, IRKA is…
math.NA2023
Interpolatory -optimality Conditions for Structured Linear Time-invariant Systems
Petar Mlinarić, Peter Benner, Serkan Gugercin
Interpolatory necessary optimality conditions for -optimal reduced-order modeling of unstructured linear time-invariant (LTI) systems are well-known. Based on previo…