Current Group Member

Prof. Dr. Roland Herzog

Group Leader

I joined Heidelberg University in April 2021 and established the group Scientific Computing and Optimization (SCOOP) at the Interdisciplinary Center for Scientific Computing (IWR).

You can find my CV here.

Research interests

My research interests include

  • optimal control of partial differential equations
  • large-scale optimization and its applications
  • numerical linear algebra
  • optimal experimental design
  • optimization on manifolds
  • numerical methods for partial differential equations

Current and Upcoming Projects

Machine Learning and Optimal Experimental Design for Thermodynamic Property Modeling
Start: 2025-03-01
End: 2028-02-29
Principal Investigators: Roland Herzog, Markus Richter
Staff: Viktor Martinek, Ophelia Frotscher
Funded by: DFG within the Priority Program funding scheme
Part of: Machine Learning in Chemical Engineering (SPP 2331)

Surrogate-Based Prediction of Cycle Fatigue Strength of Rotating Shafts and Process Optimization Using Flexible Kriging Models (dPRO2)
Start: 2024-10-01
End: 2027-09-30
Principal Investigators: Roland Herzog
Collaborators: Thomas Lampke, Lisa Winter, Andreas Schubert
Staff: Hannah Rickmann, Sahib Kaur, Pascale Neubauer
Funded by: DFG within the Package Proposal funding scheme
Part of: Data-Driven Process-Property Models to Predict Cycle Fatigue Strength (PAK 1105)

Phase Field Methods, Parameter Identification and Process Optimization (PoPULAR)
Start: 2023-07-01
End: 2026-06-30
Principal Investigators: Roland Herzog, Martin Stoll, Jan-Frederik Pietschmann
Staff: Pelin Çiloğlu, Carmen Tretmans
Funded by: DFG within the Research Unit funding scheme
Part of: Printed & Stable Organic Photovoltaics from Non-Fullerene Acceptors (FOR 5387)

Multilevel Architectures and Algorithms in Deep Learning
Start: 2023-01-01
End: 2025-12-31
Principal Investigators: Roland Herzog, Anton Schiela
Staff: Leonie Kreis, Frederik Köhne
Funded by: DFG within the Priority Program funding scheme
Part of: Theoretical Foundations of Deep Learning (SPP 2298)

Optimal Control and Optimal Experimental Design for MRI and Photoacoustic Imaging (MBAI)
Start: 2022-04-01
End: 2028-03-31
Principal Investigators: Roland Herzog, Robert Scheichl
Staff: Karina Koval
Funded by: Carl Zeiss Foundation within the CZS Breakthroughs funding scheme
Part of: Model-Based AI: Physical Models and Deep Learning for Imaging and Cancer Treatment

A Calculus for Non-Smooth Shape Optimization with Applications to Geometric Inverse Problems
Start: 2021-06-15
End: 2025-12-31
Principal Investigators: Roland Herzog, Stephan Schmidt
Staff: Manuel Weiß, Lukas Baumgärtner
Funded by: DFG within the Priority Program funding scheme
Part of: Non-Smooth and Complementarity-based Distributed Parameter Systems (SPP 1962)

Latest Publications

  • Roland Herzog, Frederik Köhne, Leonie Kreis and Anton Schiela
    Metric Frobenius norms and inner products of matrices and linear maps
    Linear Algebra and its Applications 727, p.112-128, 2025
    arXiv:2311.15419
    doi:10.1016/j.laa.2025.08.005
    bibtex 
    @ARTICLE{HerzogKoehneKreisSchiela:2025:1,
  AUTHOR = {Herzog, Roland and Köhne, Frederik and Kreis, Leonie and Schiela, Anton},
  DATE = {2025-08-08},
  DOI = {10.1016/j.laa.2025.08.005},
  EPRINT = {2311.15419},
  EPRINTTYPE = {arXiv},
  JOURNALTITLE = {Linear Algebra and its Applications},
  PAGES = {112--128},
  TITLE = {Metric Frobenius norms and inner products of matrices and linear maps},
  VOLUME = {727},
}
  • Pelin Çiloğlu, Carmen Tretmans, Roland Herzog, Jan-F. Pietschmann and Martin Stoll
    Preconditioning for a Cahn-Hilliard-Navier-Stokes model for morphology formation in organic solar cells
    Journal of Computational Physics 540, 2025
    arXiv:2501.11767
    doi:10.1016/j.jcp.2025.114280
    bibtex 
    @ARTICLE{CilogluTretmansHerzogPietschmannStoll:2025:2,
  AUTHOR = {Çiloğlu, Pelin and Tretmans, Carmen and Herzog, Roland and Pietschmann, Jan-F. and Stoll, Martin},
  DATE = {2025-08-07},
  DOI = {10.1016/j.jcp.2025.114280},
  EPRINT = {2501.11767},
  EPRINTTYPE = {arXiv},
  JOURNALTITLE = {Journal of Computational Physics},
  PAGES = {114280},
  TITLE = {Preconditioning for a Cahn-Hilliard-Navier-Stokes model for morphology formation in organic solar cells},
  VOLUME = {540},
}
  • Lukas Baumgärtner, Ronny Bergmann, Roland Herzog, Stephan Schmidt and Manuel Weiß
    Total generalized variation of the normal vector field and applications to mesh denoising, 2025
    arXiv:2507.13530
    bibtex 
    @ONLINE{BaumgaertnerBergmannHerzogSchmidtWeiss:2025:1,
  AUTHOR = {Baumgärtner, Lukas and Bergmann, Ronny and Herzog, Roland and Schmidt, Stephan and Weiß, Manuel},
  DATE = {2025-07},
  EPRINT = {2507.13530},
  EPRINTTYPE = {arXiv},
  TITLE = {Total generalized variation of the normal vector field and applications to mesh denoising},
}
  • Niklas Emonds, Evelyn Herberg, Martin Fungisai Gerchen, Marc Pritsch, Joshua Rocha, Vera Zamoscik, Peter Kirsch, Roland Herzog and Georgia Koppe
    A data-driven closed-loop control approach to drive neural state transitions for mechanistic insight, 2025
    doi:10.1101/2025.07.21.665992
    bibtex 
    @ONLINE{EmondsHerbergGerchenPritschRochaZamoscikKirschHerzogKoppe:2025:1,
  AUTHOR = {Emonds, Niklas and Herberg, Evelyn and Gerchen, Martin Fungisai and Pritsch, Marc and Rocha, Joshua and Zamoscik, Vera and Kirsch, Peter and Herzog, Roland and Koppe, Georgia},
  PUBLISHER = {Cold Spring Harbor Laboratory},
  DATE = {2025-07},
  DOI = {10.1101/2025.07.21.665992},
  EPRINT = {2025.07.21.665992},
  EPRINTTYPE = {bioRxiv},
  TITLE = {A data-driven closed-loop control approach to drive neural state transitions for mechanistic insight},
}

Latest Software

  • Lukas Baumgärtner, Roland Herzog, Stephan Schmidt and Manuel Weiß
    The proximal map of the weighted mean absolute error, 2023
    doi:10.5281/zenodo.7620815
    bibtex 
    @SOFTWARE{BaumgaertnerHerzogSchmidtWeiss:2022:2,
  AUTHOR = {Baumgärtner, Lukas and Herzog, Roland and Schmidt, Stephan and Weiß, Manuel},
  DATE = {2023},
  DOI = {10.5281/zenodo.7620815},
  TITLE = {The proximal map of the weighted mean absolute error},
}
  • Roland Herzog
    The SCOOP template engine, 2023
    https://pypi.org/project/scoop-template-engine/
    bibtex 
    @SOFTWARE{Herzog:2023:1,
  AUTHOR = {Herzog, Roland},
  URL = {https://pypi.org/project/scoop-template-engine/},
  DATE = {2023},
  TITLE = {The SCOOP template engine},
}
  • Robert Altmann and Roland Herzog
    Continuous Galerkin schemes for semi-explicit differential-algebraic equations, 2021
    doi:10.5281/zenodo.4682720
    bibtex 
    @SOFTWARE{AltmannHerzog:2021:1,
  AUTHOR = {Altmann, Robert and Herzog, Roland},
  DATE = {2021},
  DOI = {10.5281/zenodo.4682720},
  TITLE = {Continuous Galerkin schemes for semi-explicit differential-algebraic equations},
}
  • Tommy Etling, Roland Herzog, Estefanía Loayza and Gerd Wachsmuth
    First and second order shape optimization based on restricted mesh deformations, 2018
    doi:10.5281/zenodo.2547481
    bibtex 
    @SOFTWARE{EtlingHerzogLoayzaWachsmuth:2018:2,
  AUTHOR = {Etling, Tommy and Herzog, Roland and Loayza, Estefanía and Wachsmuth, Gerd},
  DATE = {2018},
  DOI = {10.5281/zenodo.2547481},
  TITLE = {First and second order shape optimization based on restricted mesh deformations},
}

Selected Talks

  • Roland Herzog
    Krylov subspace methods with a twist, 2025
    doi:10.5281/zenodo.15864810
    bibtex 
    @ONLINE{Herzog:2025:1,
  AUTHOR = {Herzog, Roland},
  DATE = {2025-06-25},
  DOI = {10.5281/zenodo.15864810},
  NOTE = {Plenary presentation given at the 30th Biennial Numerical Analysis Conference, University of Strathclyde},
  TITLE = {Krylov subspace methods with a twist},
}

Recent Teaching

Currently Supervising

  • M.Sc. Thesis of Jens Molge:
    Bifurcation Control via Shape Optimization for Particle Separation in Microfluidic Channels
    M.Sc. Mathematik, Heidelberg University
    Supervision: Roland Herzog and Patrick Farrell
  • M.Sc. Thesis of Julius Meyer Ohlendorf:
    Optimization of Battery Storage Systems in Power Markets using Reinforcement Learning
    M.Sc. Physik, Heidelberg University
    Supervision: Ullrich Köthe, Roland Herzog, Viktor Martinek and (Statkraft)
  • M.Sc. Thesis of Lena Becker:
    Preconditioning in Multiobjective Optimization
    M.Sc. Scientific Computing, Heidelberg University
    Supervision: Roland Herzog and Georg Müller
  • M.Sc. Thesis of Jeanine Wippermann:
    Inverse Reinforcement Learning in Trust Games
    M.Sc. Scientific Computing, Heidelberg University
    Supervision: Roland Herzog, Georgia Koppe and Viktor Martinek
  • M.Sc. Thesis of Kim Sandro Betschel:
    Domain Decomposition Methods for Nonlocal PDEs and Optimal Control
    M.Sc. Mathematik, Heidelberg University
    Supervision: Roland Herzog and Georg Müller

Recent Events Organized