Alumni

Copositive Optimization in Infinite Dimensional Spaces, Generalization of the Copositive and Completely Positive Cone, Combination of Conic Convex Optimization and Functional Analysis, Application: Optimization Problems on Infinite Graphs

PhD Student, ALOP Associate

Yasmine studied Applied Mathematics at Trier University. She received her Bachelor’s degree in 3/2019 and her Master’s degree in 9/2020. In 11/2020 she joined the research training group Algorithmic Optimization as an associate member.

Bilevel optimization, optimization under uncertainty

Principal Investigator

Principal Investigator

Computational Statistics, Optimization in Statistics, Data Science/Data Analysis, Small Area Estimation, Statistical Modeling

Alumini

Charlotte was born in Bad Homburg, Germany. She received her B. Sc. in Mathematics at the University of Göttingen in 2017 and her M.Sc. in Applied Mathematics at the University of Trier in July 2019. She joined the research training group Algorithmic Optimization in August 2019

Differential privacy, contingency tables and the number of integer points in polyhedra

Alumni

Carina was born in Nova Prata do Iguacu, State of Parana, Brazil. She studied Mathematics at the State University of the West of Parana, receiving her diploma in 2017. She received her MSc degree in February 2019 from the Federal University of Parana. Since April 2019, she is working as a PhD student in the research training group (RTG) “Algorithmic Optimization” (ALOP) at Trier University.

Carina completed her PhD in May 2022.

Robust optimization in big data statistics.

Principal Investigator,  Vice Speaker

Alumna, ALOP Associate

Applied statistics, especially survey statistics and estimation problems therein under complex survey designs

Pricipial Investigator

Member of the Scientific Advisory Board

Mirjam Dür was born in Vienna, Austria, where she received a M.Sc. degree in Mathematics from the University of Vienna in 1996. She received a PhD in applied mathematics from University of Trier in 1999. After that, she worked as an assistant professor at Vienna University of Economics and Business Administration, as a junior professor at TU Darmstadt, and as an Universitair Docent at the University of Groningen, The Netherlands. From October 2011 unti October 2017, she was a professor of Nonlinear Optimization in Trier. Prof. Dür recently accepted a call to the University of Augsburg.  However, she will continue to serve as a Principal Investigator with the Research Training Group ALOP.

Prof. Dür is a member of the editorial boards of the journals Mathematical Methods of Operations Research, Journal of Global Optimization, and Optimization Methods and Software, and of the book series Springer Briefs in Optimization. In 2010, she was awarded a VICI-grant by the Dutch Organisation for Scientific Research (NWO), and in 2012 a GIF Research grant by the German-Israeli Foundation for Scientific Research and Development.

Principal Investigator

Leonhard Frerick was born in Dorsten, Germany. He received his Diploma degree 1991 as well as his Phd 1994 from Trier University.

From 1995 till 2006 he worked as an assistant at the Bergische Universität Wuppertal, where he received his Habitation 2001. He has been a full professor for Analysis at Trier University since October 2006.

He is ordinary member of the Institute of Pure and Applied Mathematics (IUMPA) at the technical University of Valencia (UPV). 

Since 2010 he responsible for the Ada-Lovelace-Projekt Trier.

Alumni

PhD Student

Anke was born in Saarbrücken, Germany. She studied Business Mathematics at the University of Trier and received her M.Sc. degree in April 2019. In May 2019 she joined the research training group Algorithmic Optimization.

Simultaneous Optimal Stratification and Allocation

PhD Student

Fabian was born in Wittlich, Germany. He studied Applied Mathematics at the University of Trier and received his M.Sc. degree in July 2022. He joined the Algorithmic Optimization research training group in August 2022.

Optimal Stopping, Dynkin Games

Alumni

He successfully defended his thesis and now holds a Post-Doctoral position at the University of Augsburg.

Completely Positive Matrix Factorizations, Nonnegative Matrix Factorizations and Alternating Projection. These topics are especially connected to matrix theory, combinatorial optimization, quadratic optimization, completely positive optimization and second order cone programming.

Alumni

Numerical simulation and the optimization of airlay production processes

PhD Student, ALOP Associate

Bachelor’s degree in Mathematics in 2016, Master’s degree in Scientific Computing in 2018 (both at Technische Universität Berlin)

Model Order Reduction, port-Hamiltonian Systems, Differential-Algebraic Systems, Numerical Linear Algebra

Alumni

Low-rank tensor techniques, tensor completion, Riemannian optimization, optimal control

Mercator Fellow, Member of the Scientific Advisory Board

Alumnus

Mathematical Finance, Mean Field Games, Stochastic Control

PhD Student

Andreas was born in Wiesbaden, Germany. He studied Applied Mathematics at the University of Trier and received his M.Sc. degree in 2022. In April 2022 he joined the research training group Algorithmic Optimization.

Bilevel optimization

PhD Student

Julia was born in Trier, Germany. She studied Applied Mathematics at the University of Trier and received her M.Sc. degree in March 2022. She joined the Algorithmic Optimization research training group in April 2022.

PhD Student

Lukas was born in Saarbrücken, Germany. He studied Applied Mathematics at the University of Trier and received his B.Sc. in February 2021. After he received his M.Sc. in August 2022 he joined the research training group Algorithmic Optimization.

Alumni

Manuel Klar was born in Karlsruhe, Germany. He recieved a B.Sc. in Business Mathematics at the University of Trier and a M.Sc. in Mathematics at the Karlsruhe Institute of Technology. In 2017 he joined the research training group Algorithmic Optimization as an associate member.

Numerical methods for nonlocal operators

Alumni

Statistical Modeling, Computational Statistics, Regularization, Small Area Estimation, Survey Statistics, Data Science

Alumni

Sparse Regression, Coefficient Subset Selection, Mixed Integer Optimization, Robust Regression, Survey Statistics

Alumna

Marina studied Mathematics at the University of Alicante and obtained a Master in Statistics and Operations Research at the University of Murcia. She received her PhD in May 2019 from the University of Sevilla. Her PhD thesis is titled “Contributions to Robust and Bilevel Optimization Models for Decision-making”. From September 2019, until February 2020 she served as a postdoctoral researcher in the research training group (RTG) “Algorithmic Optimization” (ALOP) at Trier University. Subsequently, she has accepted a Professor position at the University of Valencia.

Mixed-integer linear and nonlinear programming in different fields as bilevel optimization, robust optimization, or mathematical programs with complementarity constraints

PostDoc, ALOP Associate

Henri Lefebvre earned his Ph.D. at the University of Bologna (DEI) under the supervision of Michele Monaci and Enrico Malaguti where he studied adjustable robust optimization problems with nonlinear recourses.
His main research interests are in multi-level optimization, optimization under uncertainty and decomposition methods for large-scale applications.
In particular, his work focuses on exact methods for bi-level and two-stage robust problems using decomposition approaches.

Alumni

Structure-preserving discretization and model reduction, Simulation of network systems

Alumni

Daniel Luft received his BSc in Mathematics at the Albert-Ludwigs University of Freiburg in 2016. He successfully completed his MSc in Applied Mathematics at the University of Trier in 2018, and since then is Associated Member of ALOP and working on his doctoral thesis under supervision of Prof. Volker Schulz.

Shape Optimization, PDE Theory and high performance numerical optimization, as well as differential geometric and non-smooth aspects of these areas

Principal Investigator

Nicole Marheineke holds a PhD from University of Kaiserslautern, where she was junior professor for mathematical and computational modeling from 2008 to 2010. From 2010 to 2017 she was professor at FAU Erlangen-Nürnberg, before she joined Trier University as chair for mathematical modeling and numerics. She is scientific advisor of Fraunhofer-Institute for Industrial Mathematics (ITWM) Kaiserslautern. 

Model hierarchies (asymptotics, model order reduction, stochastic surrogates), numerics and optimization for partial and stochastic differential equations

Alumni

Lukas was born in Lahnstein, Germany. He studied Business Mathematics (B. Sc.) and Applied Mathematics (M. Sc., February 2019) at the University of Trier. In April 2019 he joined ALOP.

Algorithmic methods for stochastic optimal control problems and stochastic optimization

PhD Student

Ioana finished her Master’s degree in Applied Mathematics in 4/2022 and started working as a PhD student in the research training group (RTG) “Algorithmic Optimization” (ALOP) at Trier University.

Bilevel optimization, optimization under uncertainty and handling uncertaininty with machine learning approaches.

PhD Student

Lucas was born in Chopinzinho, Brazil. He studied Mathematics at the Federal Technological University of Paraná, receiving his degree in 2020. He received his M.Sc. degree from the State University of Maringá in 2022. In April 2022 he joined ALOP.

Linear optimization in Statistics and Data Science.

Alumna

Christina Müller  studied Business Mathematics at Ulm University and Trier University. After receiving her M.Sc. in 2014 she  started working  as a scientific assistant at the Department of Biogeography at Trier University. Her Phd project is a joint work between the research group of Prof. Dr. Sachs (Numerics) and  the research group of Prof. Dr. Veith (Biogeography).  In 2016 she joined the RTG on Algorithmic Optimization as an Associate Member.

She successfully defended her thesis in January 2018.

Principal Investigator

PhD Student

Sabine studied Mathematics at Trier University receiving her Bachelor’s degree in Business Mathematics in March 2021 and her Master’s degree in Applied Mathematics in August 2022. She joined the research training group Algorithmic Optimization in September 2022.

Discrete Optimization, Optimization under uncertainty

Principal Investigator

PostDoc, ALOP Associate

Stochastic Control, Game Theory, Mean Field Games, Stochastic Processes and their Applications

Alumni

PhD Student, ALOP Associate 

João Vitor was born in Blumenau, Brazil. He studied Mathematics at Federal University of Santa Catarina, receiving his diploma in 2020. He received his MSc degree in Numerical Methods in Engineering in September 2022 from Federal University of Paraná. In January 2023, he joined the research training group Algorithmic Optimization (ALOP) as an associated member.

Alumni

Combinatorial optimization, mixed-integer programming, extended formulations, graph algorithms

PhD Student

Maria Eduarda was born in Blumenau, Brazil. She studied Mathematics at Federal University of Santa Catarina, receiving her diploma in 2020. She received her MSc degree in February 2022 from Federal University of Parana. In April 2022, she joined the research training group Algorithmic Optimization.

Optimization and Machine Learning in Data Science and Statistics

Alumni, ALOP Associate

Alumni, ALOP Associate

Multivariate Optimal Allocation in Survey Statistics, Calibration in Survey Statistics, Balanced Sampling, Multi-Criteria Optimization, Numerical Optimization.

Member of the Scientific Advisory Board

Ekkehard Sachs was born in Frankfurt (Main), where he also started his studies in Mathematics. He obtained in 1972 a Diploma from the RWTH Aachen and in 1975 a doctoral degree from the Technical University Darmstadt, where he also finished his habilitation in 1980. He served as an assistant professor at the Technische Universität Berlin from 1979 until 1982 and as assistant and associate professor from 1982 until 1986 at the North Carolina State University. He held full professor positions at the Universität Trier from 1982 until 2015 and at Virginia Tech from 2000 until 2008. Since 2015 he is a senior research professor at the Universität Trier.

Alumni

Christina Schenk received her Doctorate in Natural Sciences in 2018.  Having served as a scientific assistant in the research group of Prof. Dr. Volker Schulz on PDE-Constrained Optimization at Trier University since 2013, Ms. Schenk became an associate member of the research training group on Algorithmic Optimization in April 2016. After two years as a a Postdoctoral Fellow at Carnegie Mellon University in Pittsburgh, Pennsylvania, USA, she recently accepted a position at Basque Center for Applied Mathematics in Bilbao, Spain.

Alumni, ALOP Associate

Shape Optimization

Principal Investigator

Martin Schmidt studied Mathematics and Computer Science at the Leibniz Universität Hannover and received his PhD in 2013 in the area of algorithmic optimization. From 2014 to 2018 he was junior professor for the optimization of energy systems at the Friedrich-Alexander-Universität Erlangen-Nürnberg and the Energy Campus Nürnberg.
His research interests are mixed-integer nonlinear optimization as well as multilevel modeling and optimization. He develops novel algorithms for solving these problems for real-world and large-scale instances. His application focus is on the energy sector.

Mixed-integer nonlinear optimization as well as multilevel modeling and optimization
Developing novel algorithms for solving these problems for real-world and large-scale instances, application focus on the energy sector

Alumni, Mentor

Britta was born in Trier, Germany. She studied Applied Mathematics at the University of Trier and received her M.Sc. degree in April 2019. She joined the Algorithmic Optimization research training group in May 2019.

Low-rank tensor techniques for shape optimization in optimal control problems

Alumni

Mixed-Integer Programming, Best Subset Selection

Principal Investigator, Speaker

Volker Schulz received his diploma (M.Sc.) in mathematics from the University of Augsburg in 1990 and his PhD in 1996 form the University of Heidelberg, where he also finished his habilitation in 2000. From 1999 to 2001, he served as head of the research group on nonlinear optimization and inverse problems at WIAS, Berlin. Since 2001, he is full professor at Trier University. 

He is a member of the editorial boards of the journals SIAM Journal on Scientific Computing, Computing and Visualization in Science, Acta Applicandae Mathematica and Mathematical Modeling and Applied Computing. He is the speaker of the DFG-funded research training group on Algorithmic Optimization.

PhD Student

Matthias was born in Merzig, Germany. He studied Applied Mathematics in Trier and received his M.Sc. degree in December 2020. In 2021 he joined the research training group Algorithmic Optimization.

Shape optimization, nonlocal models

Principal Investigator

Frank Seifried holds a PhD from University of Kaiserslautern, where he was an assistant professor for mathematical finance from 2011 to 2015. In 2015 he joined Trier University as a professor for probability theory. He is a scientific advisor of Fraunhofer ITWM Research Institute and serves on the editorial board of Mathematical Methods of Operations Research.

Alumni

Lena was born in Kaiserslautern and studied Mathematics (BSc) and Business Mathematics (MSc) at Karlsruhe Institute of Technology. During her Master’s program she spent one semester at Université de Rennes I, France. After her graduation in 2017, she worked as an applied research associate in Data Science at Fraunhofer IESE. She joined the research training group as a PhD student in August 2019.

Manifold optimization in Statistics and Data Science

Administrative Coordination

Martina Shaw was born in Burbach (Siegerland). After emigrating to the U.S. in 1983, she returned to Germany in 2015 and joined the RTG ALOP in April 2016. Her education and professional background is in law firm administration.

Member of the Scientific Advisory Board

PDE-constrained optimization

Administrative Coordination

Laura Sokolowski was born in Trier. After completing her education as foreign language assistant, she also completed an apprenticeship as hotel specialist.

After working in a professional capacity for many years she joined the RTG ALOP as an administrative coordinator in September 2022.

Alumni

Jan Sokolowski studied Business Mathematics at Trier University from October 2013 to September 2018. He received his BSc in February 2017 and his MSc in September 2018. From October 2018 to March 2022 he worked as a PhD student in the course of a collaboration between the research group of Prof. Volker Schulz and the Basics & Mathematical Models department of IEE S.A. and became associate member of ALOP in 2020. He submitted his thesis with the title “Hybrid Modelling of Dynamical Systems in Mechanics” in January 2022 and received his Doctoral degree in March 2022.

Parameter Estimation for Dynamical Systems, System Identification, Mathematical Modelling of Physical Systems, Optimization for (Deep) Neural Networks, Signal Processing, Hybrid Modelling

Alumni

Laura received her Master of Science in Business Mathematics at Trier University in 2014. She started my PhD in the working group of Prof. Dr. Ekkehard Sachs and in 2016, became a researcher at ALOP.

Optimal Control Theory, Partial Integro Differential Equations on Bounded and Unbounded Spatial Domains, Neoclassical Growth Theory, Spatial Economics

PhD Student

Max studied Applied Mathematics at the University of Trier and received his M.Sc. degree in 2019. In May 2019 he joined the research training group Algorithmic Optimization.

Spatial and dynamic equilibrium problems

Alumni, ALOP Associate

Model Order Reduction, State Estimation for Large Scale Systems, Simulation of Network Systems

PostDoc, ALOP Associate

Johannes studied at the Friedrich-Alexander Universität Erlangen-Nürnberg (FAU). He received his Bachelor’s degree in Mathematics with minor subject economics in 10/2014 and his Master’s degree in Mathematics with focus on modeling, simulation, and optimization in 05/2017. From 06/2017 to 10/2021 he worked as a research assistant and doctoral student at the Chair of Analytics & Mixed-Integer Optimization at the FAU. In 11/2021 he joined the nonlinear optimization group of Martin Schmidt as well as the research training group Algorithmic Optimization as an associate member.

Optimization under uncertainty, network optimization, combinatorial and algorithmic optimization

Alumni

Surrogate Optimization via Space-Mapping, Nonlinear Model Order Reduction, Finite Element Method

Alumni

Alumni, Mentor

In July 2016, Christian Vollmann received his M.Sc. in Applied Mathematics from the University of Trier and subsequently joined the Research Training Group ALOP to finish his Phd in July 2019. Since that time he serves in the position of a postdoctoral associate.

• Nonlocal models
• Finite element methods
• Shape optimization

Alumni

Michael was born in Trier, Germany. He studied Applied Mathematics at the University of Trier and received his M.Sc. degree in July 2019. In September 2019 he joined the research training group Algorithmic Optimization.

Neumann  boundary conditions for nonlocal equations

Alumni, Scientific Researcher

• Numerical Optimization and Modelling
• Large Scale Optimization Algorithms
• Small Area Estimation.

Alumni, Post-doctoral Researcher, Associate Member

• Shape optimization
• Constrained optimization problems, in particular, constraints in the form of partial differential equations or variational inequalities 
• Shape spaces as Riemannian manifolds and diffeological spaces
• Numerical methods

PhD Student, ALOP Associate

Felix was born in Trier, Germany. He studied Applied and Business Mathematics at the University of Trier and received his M.Sc. degree in August 2019. During his degree he studied Mathematics at the University of Southampton and Université de Strasbourg. In November 2019 he became an associate Member of the RTG ALOP.

Alumni

Lukas Winkel was born in Düsseldorf, Germany. He received his B.Sc. in Business Mathematics in 2016 at the University of Cologne and graduated as M.Sc. in Business Mathematics from the University of Cologne in 2019. During is Bachelor’s degree, he spent time abroad at EWHA Womans University in Seoul, Korea. He joined the RTG ALOP in April of 2019 and is currently working on Mixed Integer Linear Complementarity Problems.

Graph Theory, Discrete Optimization, Combinatorial Optimization

PhD Student

Max studied Mathematics at the Technische Universität Berlin and received his M.Sc. in 2021. In June 2021 he joined the research training group Algorithmic Optimization.

Portfoliooptimization, Algorithmic and machine learning methods for stochastic optimal control problems, Data Science

Alumni

Yida Zhu was born in Shanghai, China.

He studied Mathematics at the University Hamburg, receiving his B.Sc. in March 2013 and M.Sc. in May 2016.

Beginning in June 2016, he was working as a PhD student in the research training group (RTG) “Algorithmic Optimization” (ALOP) at Trier University.

In October 2019, he successfully defended his thesis on a competitive analysis of scheduling problems and list accessing problems.

Graph theory, greedy strategy and submodularity, online optimization, bandit problem, scheduling problem.