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Prof. Sager

Prof. Dr. rer. nat. habil. Sebastian Sager

Fakultät für Mathematik
Institut für Mathematische Optimierung (IMO)
Gebäude 02, Universitätsplatz 2, 39106, Magdeburg, Gebäude 02, Raum 224
Tel.: +49 391 67 18745
Fax: +49 391 67 11171

Prof. Dr. rer. nat. habil. Sebastian Sager

Fakultät für Mathematik
Institut für Mathematische Optimierung (IMO)
Gebäude 02, Universitätsplatz 2, 39106, Magdeburg, Gebäude 02, Raum 224
Tel.: +49 391 67 18745
Fax: +49 391 67 11171
Projekte
Publikationen

2017

Begutachteter Zeitschriftenartikel
Jost, Felix;  Sager, Sebastian;  Le, Thi Thien Thuy 

A feedback optimal control algorithm with optimal measurement time points
In: Processes: open access journal - Basel: MDPI, Bd. 5.2017, 1, insges. 19 S.; http://dx.doi.org/10.3390/pr5010010

Engelhart, Michael;  Funke, Joachim;  Sager, Sebastian 

A web-based feedback study on optimization-based training and analysis of human decision making
In: Journal of dynamic decision making: JDDM - Heidelberg: Univ.-Bibliothek, Vol. 3.2017, Art. 2, insgesamt 23 S.; http://dx.doi.org/10.11588/jddm.2017.1.34608

Diedam, Holger;  Sager, Sebastian 

Global optimal control with the direct multiple shooting method
In: Optimal control, applications and methods - New York, NY [u.a.]: Wiley, 2017; http://dx.doi.org/10.1002/oca.2324

Weber, Tobias;  Katus, Hugo A.;  Sager, Sebastian;  Scholz, Eberhard P. 

Novel algorithm for accelerated electroanatomic mapping and prediction of earliest activation of focal cardiac arrhythmias using mathematical optimization
In: Heart rhythm - New York, NY [u.a.]: Elsevier, Bd. 14.2017, 6, S. 875-882; http://dx.doi.org/10.1016/j.hrthm.2017.03.001

Buchbeitrag
Matke, Carsten;  Bienstok, Danie;  Munoz, Gonzalo;  Yang, Shuoguang;  Kleinhans, David;  Sager, Sebastian 

Robust optimization of power network operation - storage devices and the role of forecast errors in renewable energies
In: Complex networks & their applications V - Newcastle upon Tyne, UK: Cambridge Scholars Pub, S. 809-820, 2017 - (Studies in computational intelligence; 693); http://dx.doi.org/10.1007/978-3-319-50901-3_64 ; [Kongress: 5th International Workshop on Complex Networks and their Applications, Milan, Italy, 30.11.-02.12, 2016]

Matke, Carsten;  Medjroubi, Wided;  Kleinhans, David;  Sager, Sebastian 

Structure analysis of the German transmission network using the open source model SciGRID
In: Advances in Energy System Optimization: Proceedings of the first International Symposium on Energy System Optimization - Cham: Springer International Publishing, S. 177-188, 2017; http://dx.doi.org/10.1007/978-3-319-51795-7_11

2016

Begutachteter Zeitschriftenartikel
Zeile, Clemens;  Scholz, Eberhard;  Sager, Sebastian 

A simplified 2D heart model of the Wolff-Parkinson-White Syndrome
In: IFAC-PapersOnLine - Frankfurt: Elsevier, Bd. 49.2016, 26, S. 26-31, 49 2016 26 26-31; http://dx.doi.org/10.1016/j.ifacol.2016.12.098 ; [Kongress: Foundations of Systems Biology in Engineering, FOSBE 2016, Magdeburg, Germany, 9-12 October, 2016]

Janka, Dennis;  Kirches, Christian;  Sager, Sebastian;  Wächter, Andreas 

An SR1/BFGS SQP algorithm for nonconvex nonlinear programs with block-diagonal Hessian matrix
In: Mathematical programming computation: MPC - Berlin: Springer, insges. 25 S., 2016, 2016 25; http://dx.doi.org/10.1007/s12532-016-0101-2

Himmel, Andreas;  Rihko-Struckmann, L.;  Sager, Sebastian;  Sundmacher, Kai 

Modellgestützte optimale Steuerung von Biogasanlagen
In: Chemie - Ingenieur - Technik: CIT - Weinheim: Wiley-VCH Verl, Bd. 88.2016, 9, S. 1349-1350, 88 2016 9 1349-1350; http://dx.doi.org/10.1002/cite.201650122 ; [Special Issue: ProcessNet-Jahrestagung und 32. DECHEMA-Jahrestagung der Biotechnologen 2016]

Jost, Felix;  Rinke, Kristine;  Fischer, Thomas;  Schalk, Enrico;  Sager, Sebastian 

Optimum experimental design for patient specific mathematical leukopenia models
In: IFAC-PapersOnLine - Frankfurt: Elsevier, Bd. 49.2016, 26, S. 344-349, 49 2016 26 344-349; http://dx.doi.org/10.1016/j.ifacol.2016.12.150 ; [Kongress: Foundations of Systems Biology in Engineering, FOSBE 2016, Magdeburg, Germany, 9-12 October, 2016]

Rinke, Kristine;  Jost, Felix;  Findeisen, Rolf;  Fischer, Thomas;  Bartsch, Rainer;  Schalk, Enrico;  Sager, Sebastian 

Parameter estimation for leukocyte dynamics after chemotherapy
In: IFAC-PapersOnLine - Frankfurt: Elsevier, Bd. 49.2016, 26, S. 44-49, 49 2016 26 44-49; http://dx.doi.org/10.1016/j.ifacol.2016.12.101 ; [Kongress: Foundations of Systems Biology in Engineering, FOSBE 2016, Magdeburg, Germany, 9-12 October, 2016]

2015

Begutachteter Zeitschriftenartikel
Frasch, Janick V.;  Sager, Sebastian;  Diehl, Moritz 

A parallel quadratic programming method for dynamic optimization problems
In: Mathematical programming computation : MPC. - Berlin : Springer, Bd. 7.2015, 3, S. 289-329

Sager, Sebastian;  Claeys, Mathieu;  Messine, Frédéric 

Efficient upper and lower bounds for global mixed-integer optimal control
In: Journal of global optimization : an international journal dealing with theoretical and computational aspects of seeking global optima and their applications in science, management and engineering. - Dordrecht [u.a.] : Springer Science + Business Media B.V, Bd. 61.2015, 4, S. 721-743

Jung, Michael N.;  Reinelt, Gerhard;  Sager, Sebastian 

The Lagrangian relaxation for the combinatorial integral approximation problem
In: Optimization methods & software. - London [u.a.] : Taylor & Francis, Bd. 30.2015, 1, S. 54-80

2014

Abstrakt
Rinke, Kristine;  Bartsch, Rainer;  Fischer, Thomas;  Schalk, Enrico;  Sager, Sebastian 

Mathematical modelling of neutropenia of AML patients treated with chemotherapy
In: Oncology research and treatment. - Basel : Karger; Bd. 37.2014, Suppl. 5, P501, S. 159

Begutachteter Zeitschriftenartikel
Scholz, Eberhard P.;  Kehrle, Florian;  Vossel, Stephan;  Hess, Alexander;  Zitron, Edgar;  Katus, Hugo A.;  Sager, Sebastian 

Discriminating atrial flutter from atrial fibrillation using a multilevel model of atrioventricular conduction
In: Heart rhythm. - New York, NY [u.a.] : Elsevier, Bd. 11.2014, 5, S. 877-884

Huschto, Tony;  Sager, Sebastian 

Pricing conspicuous consumption products in recession periods with uncertain strength
In: EURO journal on decision processes. - Berlin : Springer, Bd. 2.2014, 1/2, S. 3-30

Huschto, Tony;  Sager, Sebastian 

Solving stochastic optimal control problems by a Wiener chaos approach
In: Vietnam journal of mathematics. - Singapore : Springer, Bd. 42.2014, 1, S. 83-113

Buchbeitrag
Zanon, Mario;  Frasch, Janick;  Vukov, Milan;  Sager, Sebastian;  Diehl, Moritz 

Model predictive control of autonomous vehicles
In: Waschl, Harald: : Optimization and Optimal Control in Automotive Systems. - Cham : Springer International Publishing, S. 41-57, 2014 - (Lecture Notes in Control and Information Sciences; 455)

2013

Abstrakt
Huschto, Tony;  Sager, Sebastian 

Pricing conspicuous consumption products in recession periods with uncertain strength
In: Optimization online. - [S.l.], 2013

Begutachteter Zeitschriftenartikel
Engelhart, Michael;  Funke, Joachim;  Sager, Sebastian 

A decomposition approach for a new test-scenario in complex problem solving
In: Journal of computational science. - Amsterdam [u.a.] : Elsevier, Bd. 4.2013, 4, S. 245-254

Kirches, Christian;  Potschka, Andreas;  Bock, Hans Georg;  Sager, Sebastian 

A parametric active set method for quadratic programs with vanishing constraints
In: Pacific journal of optimization. - Yokohama : Yokohama Publishers, Bd. 9.2013, 2, S. 275-299

Joseph-Duran, Bernat;  Jung, Michael;  Ocampo-Martinez, Carlos;  Sager, Sebastian;  Cembrano, Gabriela 

Minimization of sewage network overflow
In: Water resources management. - Dordrecht [u.a.] : Springer Science + Business Media B.V, insges. 23 S., 2013

Hante, F. M.;  Sager, Sebastian 

Relaxation methods for mixed-integer optimal control of partial differential equations
In: Computational optimization and applications. - New York, NY [u.a.] : Springer Science + Business Media B.V, Bd. 55.2013, 1, S. 197-225

Sager, Sebastian 

Sampling decisions in optimum experimental design in the light of pontryagin's maximum principle
In: SIAM journal on control and optimization. - Philadelphia, Pa : Soc, Bd. 51.2013, 4, S. 3181-3207

Sager, Sebastian;  Mombaur, Katja;  Funke, Joachim 

Scientific computing for the cognitive sciences
In: Journal of computational science. - Amsterdam [u.a.] : Elsevier, Bd. 4.2013, 4, S. 242-244

Buchbeitrag
Sager, Sebastian;  Frasch, Janick;  Gray, Andrew;  Zanon, Mario;  Ferreau, Hans Joachim;  Borrelli, Francesco;  Diehl, Moritz 

An auto-generated nonlinear MPC algorithm for real-time obstacle avoidance of ground vehicles
In: Proceedings of the 12th European Control Conference (ECC). - Zürich, insges. 6 S., 2013 ; Kongress: ECC; 12 (Zürich) : 2013.07.17-19

Sager, Sebastian;  Kirches, Christian;  Bock, Hans Georg;  Schlöder, Johannes P. 

Mixed-integer NMPC for predictive cruise control of heavy-duty trucks
In: Proceedings of the 12th European Control Conference (ECC). - Zürich, S. 4118-4123, 2013 ; Kongress: ECC; 12 (Zürich) : 2013.07.17-19

Jung, Michael N.;  Kirches, Christian;  Sager, Sebastian 

On perspective functions and vanishing constraints in mixed-integer nonlinear optimal control
In: Jünger, Michael: : Facets of Combinatorial Optimization. - Berlin, Heidelberg : Springer Berlin Heidelberg, S. 387-417, 2013

Sager, Sebastian;  Huschto, Tony 

Stochastic optimal control in the perspective of the Wiener chaos
In: Proceedings of the 12th European Control Conference (ECC). - Zürich, S. 3059-3064, 2013 ; Kongress: ECC; 12 (Zürich) : 2013.07.17-19

2012

Artikel in Kongressband
Kirches, C.;  Bock, H.G.;  Schlöder, J.P.;  Sager, Sebastian 

Complementary Condensing for the Direct Multiple Shooting Method
In: Modeling, Simulation, and Optimization of Complex Processes, HPSC 2009, Springer, pp. 195-206

Frasch, J.V.;  Wirsching, L.;  Sager, Sebastian;  Bock, H.G. 

Mixed-Level Iteration Schemes for Nonlinear Model Predictive Control

Begutachteter Zeitschriftenartikel
Sager, Sebastian;  Bock, Hans Georg;  Diehl, Moritz 

The integer approximation error in mixed-integer optimal control
In: Mathematical programming. - Berlin : Springer, Bd. 133.2012, 1/2, S. 1-23

Buchbeitrag
Sager, Sebastian 

A benchmark library of mixed-integer optimal control problems
In: Mixed Integer Nonlinear Programming, The IMA Volumes in Mathematics and its Applications, Vol. 154, ISBN 978-1-4614-1926-6, pp. 631-670

Sager, Sebastian 

A benchmark library of mixed-integer optimal control problems
In: Lee, Jon: : Mixed Integer Nonlinear Programming. - New York, NY : Springer Science+Business Media, LLC, S. 631-670, 2012

Gerdts, M.;  Sager, Sebastian 

Mixed-Integer DAE Optimal Control Problems: Necessary conditions and bounds
In: Control and Optimization with Differential-Algebraic Constraints, SIAM, ISBN 978-1-611972-24-5, pp. 189-212

2011

Begutachteter Zeitschriftenartikel
Kirches, C.;  Bock, H.G.;  Schlöder, J.P.;  Sager, S. 

A factorization with update procedures for a KKT matrix arising in direct optimal control
In: Mathematical Programming Computation, Vol. 3, 2011, Issue 4, S. 319-348, ISSN 18672949, 10.1007/s12532-011-0030-z

Kirches, C.;  Bock, H.G.;  Schloder, J.P.;  Sager, S. 

Block-structured quadratic programming for the direct multiple shooting method for optimal control
In: Optimization Methods and Software, Vol. 26, 2011, Issue 2, S. 239-257, ISSN 10556788, 10.1080/10556781003623891

Sager, S.;  Jung, M.;  Kirches, C. 

Combinatorial integral approximation
In: Mathematical Methods of Operations Research, Vol. 73, 2011, Issue 3, S. 363-380, ISSN 14322994, 10.1007/s00186-011-0355-4

Huschto, T.;  Feichtinger, G.;  Hartl, R.F.;  Kort, P.M.;  Sager, S.;  Seidl, A. 

Numerical solution of a conspicuous consumption model with constant control delay
In: Automatica, Vol. 47, 2011, Issue 9, S. 1868-1877, ISSN 00051098, 10.1016/j.automatica.2011.06.004

Engelhart, M.;  Lebiedz, D.;  Sager, S. 

Optimal control for selected cancer chemotherapy ODE models: A view on the potential of optimal schedules and choice of objective function
In: Mathematical Biosciences, Vol. 229, 2011, Issue 1, S. 123-134, ISSN 00255564, 10.1016/j.mbs.2010.11.007

Sager, S.;  Barth, C.M.;  Diedam, H.;  Engelhart, M.;  Funke, J. 

Optimization as an analysis tool for human complex problem solving
In: SIAM Journal on Optimization, Vol. 21, 2011, Issue 3, S. 936-959, ISSN 10526234, 10.1137/11082018X

Herausgeberschaft
Kehrle, F.;  Frasch, J.V.;  Kirches, C.;  Sager, S. 

Optimal control of Formula 1 race cars in a VDrift based virtual environment
In: IFAC Proceedings Volumes (IFAC-PapersOnline), Vol. 18, 2011, Issue PART 1, S. 11907-11912, ISSN 14746670, 10.3182/20110828-6-IT-1002.02954

2010

Begutachteter Zeitschriftenartikel
Logist, F.;  Sager, S.;  Kirches, C.;  Van Impe, J.F. 

Efficient multiple objective optimal control of dynamic systems with integer controls
In: Journal of Process Control, Vol. 20, 2010, Issue 7, S. 810-822, ISSN 09591524, 10.1016/j.jprocont.2010.04.009

Kirches, C.;  Sager, S.;  Bock, H.G.;  Schl̈  oder, J.P. 

Time-optimal control of automobile test drives with gear shifts
In: Optimal Control Applications and Methods, Vol. 31, 2010, Issue 2, S. 137-153, ISSN 01432087, 10.1002/oca.892

2009

Begutachteter Zeitschriftenartikel
Sager, S.;  Bock, H.G.;  Reinelt, G. 

Direct methods with maximal lower bound for mixed-integer optimal control problems
In: Mathematical Programming, Vol. 118, 2009, Issue 1, S. 109-149, ISSN 00255610, 10.1007/s10107-007-0185-6

Sager, S. 

Reformulations and algorithms for the optimization of switching decisions in nonlinear optimal control
In: Journal of Process Control, Vol. 19, 2009, Issue 8, S. 1238-1247, ISSN 09591524, 10.1016/j.jprocont.2009.03.008

Kooperationen
  • Volkswagen - Umwelt und Strategie
  • Argonne National Lab, Sven Leyffer
  • TU Braunschweig, Prof. Christian Kirches
  • Universität Heidelberg
  • mathe.medical GmbH
  • ABB
  • BASF
  • Daimler
  • Air Berlin
  • Deutsche Lufthansa
Profile
Der Schwerpunkt der Arbeitsgruppe liegt auf effizienten Algorithmen für die Optimierung, insbesondere für Probleme mit kontinuierlichen und diskreten Entscheidungen und unterliegenden Differentialgleichungsmodellen. Wir entwickeln auch eigene Softwarepakete zur Lösung, beispielsweise den QP Löser qpDUNES für die Optimierung in Echtzeit.
Service
Beratung im Bereich Modellierung, Simulation und Optimierung auf Projektbasis.
Vita
4/2012-current:W3 full professor at the Faculty of Mathematics, Otto-von-Guericke-Universität Magdeburg
4/2012: Habilitation at the Ruprecht-Karls-Universität Heidelberg
10/2008-3/2012: Junior Research Group Leader at the Interdisciplinary Center for Scienti¿c Computing (IWR), Heidelberg
2/2008-9/2008: Akademischer Rat auf Zeit (former C1 assistant professor position, 3+3 years contract) at IWR, Heidelberg
4/2007-1/2008: Postdoc in the SIMUMAT research team on aerodynamic shape optimization, Universidad Autónoma, Madrid (E)
10/2006-3/2007: Akademischer Rat auf Zeit at IWR Heidelberg
2/2006-9/2006: Postdoc at the IWR, Heidelberg
2/2002-2/2006: PhD thesis Numerical methods for mixed-integer optimal control problems in mathematics, supervised by G. Reinelt and H.G. Bock (grade: summa cum laude)
2/2002-2/2005: Member of the International DFG Graduiertenkolleg 710
2/2004-4/2004: Research stays at the Universidad Carlos III de Madrid and the Universidad de Valladolid (E)
10/1995-12/2001: Studies at the Universität Heidelberg, diploma in mathematics with specialization in physics/astronomy (grade: excellent)
1/2000-5/2000: Exchange student at the University of Ho-Chi-Minh-City (VN)
9/1997-7/1998: Exchange student at the Université de Montpellier (F)
6/1994: Abitur at the Gymnasium Westerstede
presse
Der Schwerpunkt der Gruppe liegt auf der Anwendung und Weiterentwicklung von Optimierungsverfahren und deren effiziente Umsetzung am Computer. Wir glauben an das Potenzial der multi-disziplinären Zusammenarbeit zwischen Partnern mit komplementärer Kompetenz und schätzen den doppelten Nutzen: neuartige, innovative Ansätze und Erkenntnisse in der Anwendung der Optimierung und ein erforderlicher Feedback-Effekt, der die Entwicklung neuer Methoden in der angewandten Mathematik voranbringt.

Letzte Änderung: 28.08.2017 - Ansprechpartner:

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