Talks (Prof. Dür)

Conference talks

  1. 27.06.2024:   EUROPT 2024Copositive and semi-infinite optimization. Lund, Sweden
  2. 03.07.2024: 33rd European Conference on Operational Research: Relaxations for the elementary shortest path problem. Copenhagen, Denmark
  3. 31.07-01.08. 2023: Summer Workshop for PhD candidates and Post-Docs of OeGOR, the Austrian Society of Operations Research. Krems, Austria
  4. 20.06.2022: ILAS 2022Factorization of Completely Positive Matrices. Galway, Ireland
  5. 26.05.2022: Plenary Speaker VOCAL 2022: Recent developments in conic optimization. Budapest, Hungary
  6. 03.09.2021: EURO Plenary Speaker, Operations Research 2021Conic Optimization: An Application-Oriented Survey. Bern, Switzerland (online).
  7. 23.06.2021: Invited Speaker, 8th European Congress of Mathematics: Tackling discrete optimization problems by continuous methods. Portoroz, Slovenia (online). Youtube video available here.
  8. Cancelled: Plenary Speaker, Optimization 2020, Aveiro, Portugal
  9. Postponed: Talk at ILAS 2020 (The 23rd Meeting of the International Linear Algebra Society), Galway, Ireland.
  10. Cancelled: Keynote Seaker, Edinburgh Workshop on Optimization and Operational Research, Edinburg, UK.
  11. 12.09.2019: Invited Speaker, MAT TRIAD 2019 International Conference on Matrix Analysis and its Applications: Copositive optimization and completely positive matrix factorization, Liblice, Czech Republic.
  12. 19.03.2019: Invited Speaker, Workshop Women in Optimization - WiO 2019: Gedanken zu meinem Karriereweg und meinem Forschungsgebiet. Bonn, Germany.
  13. 20.12.2018: Invited Speaker, Optimization, Game Theory, and Data Analysis Workshop: Copositive optimization and completely positive matrix factorization. Vienna, Austria.
  14. 26.07.2018: Invited Speaker, XII Brazilian Workshop on Continuous Optimization: Conic optimization approaches to combinatorial problemsFoz do Iguaçu, Brazil.
  15. 05.07.2018: ISMP2018: A robust approach to stratified sampling allocation problems. Bordeaux, France.
  16. 07.09.2017: OR2017: A factorization method for completely positive matrices based on alternating projections. Berlin, Germany.
  17. 24.05.2017: SIAM Conference on Optimization 2017: A Factorization Method for Completely Positive Matrices. Vancouver, Canada.
  18. 08.09.2016: 5th IMA Conference on Numerical Linear Algebra and Optimization: A factorization method for completely positive matrices. Birmingham, UK.
  19. 08.08.2016: Semiplenary Talk, ICCOPT2016: Copositive optimization. Tokyo, Japan.
  20. 04.05.2016: ICBO16: Genericity and stability results in linear conic programming. Dresden, Germany.
  21. 21.10.2015 Invited Talk, Workshop for Mixed-integer Nonlinear Optimization: A factorization heuristic for completely positive matrices. Oberwolfach Mathematical Institute, Germany.
  22. 03.09.2015: OR2015: Solution methods for black-box optimization problems. Vienna, Austria.
  23. 22.07.2015: Plenary Talk, MOPTA2015: Copositive programming: a framework for quadratic and combinatorial optimization. Lehigh University in Bethlehem, PA, USA.
  24. 16.07.2015: ISMP2015: Genericity and Stability in Linear Conic Programming. Pittsburgh, USA.
  25. 15.12.2014: VOCAL 2014: Infinite dimensional copositive optimization. Veszprem, Hungary.
  26. 20.05.2014: SIAM Conference on Optimization 2014: Cutting planes for completely positive conic problems. San Diego, USA.
  27. 05.09.2013: OR 2013: Cutting planes for completely positive conic problems. Rotterdam, The Netherlands.             
  28. 28.06.2013: EUROPT 2013: A copositive formulation for the stability number of infinite graphs. Florence, Italy.
  29. 15.11.2012: Invited Talk, 2012 Haifa Matrix Theory Conference: The use of copositive and completely positive matrices in optimization. Haifa, Israel.
  30. 05.09.2012: OR 2012: Infinite dimensional semidefinite programming. Hannover, Germany.
  31. 20.08.2012: ISMP 2012: Remarks on copositive plus matrices and the copositive plus completion problem. Berlin, Germany.
  32. 11.01.2012: Invited Talk, LAWOC 2012: A copositive formulation for the stability number of infinite graphs. Valparaiso, Chile.
  33. 17.06.2011: Invited Talk, SIGOPT 2011: Recent Developments in Copositive Programming. PfalzAkademie Lambrecht, Germany.
  34. 18.05.2011: SIAM Conference on Optimization: Complexity Issues in Copositive Optimization. Darmstadt, Germany.
  35. 13.07.2010: EURO XXIV: A d.c.-approach to copositivity. Lisbon, Portugal.
  36. 10.07.2010: Invited Plenary Talk, 8th EUROPT Workshop "Advances in Continuous Optimization": Optimally Fitting Hyperplanes to Data. Aveiro, Portugal.
  37. 15.06.2010: Invited Talk, HPOPT 2010: Recent Progress in Copositive Programming. Tilburg University, The Netherlands.
  38. 27.05.2010: Invited Talk, DIAMANT Symposium: Copositive Programming. Nunspeet, The Netherlands.
  39. 05.01.2010: Invited Talk, Workshop "Convex Analysis, Optimization and Applications", held on the occasion of the 65th birthday of Claude Lemaréchal: Solving quadratic problems by copositive optimization. Les Houches, France.
  40. 15.09.2009: Invited Plenary Talk, 14th Belgian-French-German Conference on Optimization: Copositive Programming. Leuven, Belgium.
  41. 28.08.2009: International Symposium on Mathematical Programming 2009: The Difference Between 5 x 5 Doubly Nonnegative and Completely Positive Matrices. Chicago, USA.
  42. 04.07.2009: EUROPT Workshop on Continuous Optimization 2009: The Difference Between 5 x 5 Doubly Nonnegative and Completely Positive Matrices. Remagen, Germany.
  43. 03.09.2008: Operations Research 2008: Packing Solar Cells on a Roof. Augsburg, Germany.
  44. 23.05.2008: Invited Plenary Talk, EURO MiniConference on Optimization: Discrete Nonlinear Optimization in a Conic Programming Framework. Neringa, Lithuania.
  45. 13.05.2008:SIAM Conference on Optimization: An Adaptive Algorithm for Copositive Programs. Boston, USA.
  46. 18.02.2008: SIGOPT 2008: Optimization over Convex Cones: Beyond Semidefinite Programming. PfalzAkademie Lambrecht, Germany.
  47. 18.09.2007: 13th Czech-French-German Conference on Optimization Neutral Data Fitting. Heidelberg, Germany.
  48. 06.09.2007: Operations Research 2007: Neutral Data Fitting. Saarbrücken, Germany.
  49. 11.07.2007: EURO XXII (22nd European Conference on Operational Research): Relaxations and Dual Bounds for Quadratic Problems. Prague, Czech Republic.
  50. 06.07.2007: Joint EUROPT-OMS Meeting: Linear Approximations of Copositive Programs. Prague,Czech Republic.
  51. 13.12.2006: Veszprem Optimization Conference: Advanced Algorithms (VOCAL): Towards Solving Copositive Programs. Veszprem, Hungary.
  52. 16.11.2006: BIRS Optimization and Engineering Applications Workshop: Solving Copositive Programs through Linear Approximations. Banff International Research Station for Mathematical Innovation and Discovery, Canada.
  53. 07.09.2006: Operations Research 2006: Linear Approximations of Copositive Programs. Karlsruhe, Germany.
  54. 05.07.2006: EURO XXI (21st European Conference on Operational Research): An Algorithm for Multiple Neutral Data Fitting. Reykjavik, Iceland.
  55. 16.12.2005: International Workshop on Discrete-Continuous Optimization and Optimal Control: Branch-and-Bound Approaches to Mixed Integer Nonlinear Programming. Darmstadt, Germany.
  56. 18.09.2005: International Workshop on Global Optimization: Multiple Neutral Data Fitting. Almeria, Spain.
  57. 08.11.2004: Workshop on Integer Programming and Continuous Optimization: Probabilistic Subproblem Selection in Branch-and-Bound Algorithms. TU Chemnitz, Germany.
  58. 05.07.2004: EURO XX (20th European Conference on Operational Research): A Stochastic Approach to Fractional Programming. Rhodos, Greece.
  59. 03.07.2004: Workshop on Challenges of Continuous Optimization in Theory and Applications: Duality in Optimization: From Convex to Nonconvex Problems. Rhodos, Greece.
  60. 26.09.2003: Joint Meeting of the Austrian Mathematical Society (ÖMG) with SIMAI and UMI: A Stochastic Algorithm for Global Optimization. Bolzano, Italy.
  61. 19.08.2003: ISMP 2003: Solving Fractional Programs with Stochastic Algorithms. Copenhagen, Denmark.
  62. 07.07.20 03: EURO/INFORMS Joint International Meeting 2003: Probabilistic Subset Selection in Branch-and-Bound Algorithms. Istanbul, Turkey.
  63. 04.06.2003: CORS/SCRO 2003 (45th Annual Conference of the Canadian Operational Research Society): Solving Fractional Programs with Stochastic Algorithms. Vancouver, Canada.
  64. 10.05.2003: West Coast Optimization Meeting: Probabilistic Subset Selection in Branch-and-Bound Algorithms. University of Washington, Seattle, USA.
  65. 09.09.2002: French-German-Polish Conference on Optimization: Probabilistic Subset Selection in Branch-and-Bound Algorithms. TU Cottbus, Germany.
  66. 04.09.2002: International Conference on Operations Research 2002: Nonconvex Duality: Theory and Applications. Universität Klagenfurt, Austria.
  67. 05.07.2001: Optimization and Industry Conference: On Copositive Programming and Standard Quadratic Optimization Problems. Central Queensland University, Australia.
  68. 07.08.2000: ISMP 2000: Dual Bounding Procedures Lead to Convergent Branch-and-Bound Algorithms. Georgia Institute of Technology, Atlanta, USA.
  69. 05.05.2000: Workshop "Complex Behavior in Economics": Maximizing a Sum of Fractions. CEFI, Université de la Mediterranée, Aix-en-Provence.
  70. 30.09.1999: International Workshop on Global Optimization - GO.99: Dual Bounding Procedures in Branch-and-Bound Algorithms. Università di Firenze.
  71. 07.09.1999: Jahrestagung der Deutschen Mathematikervereinigung: Branch-and-Bound Verfahren mit dualen Schranken: Theorie und Anwendung auf ein Quotientenproblem. Johannes Gutenberg-Universität Mainz.
  72. 16.12.1998: International Conference on Nonlinear Programming and Variational Inequalities: Local and Global Optimality Conditions for Minimizing Differences of Functions. City University of Hong Kong, China.
  73. 07.09.1998: 9th Belgian-French-German Conference on Optimization: Local and Global Optimality Conditions for Minimizing Differences of Functions. FUNDP Namur, Belgium.
  74. 26.08.1997: ISMP 1997: On Global Optimization of Sums of Ratios and the Corresponding Multiple-Objective Decision Problem. EPFL Lausanne, Switzerland.
  75. 03.04.1997: ADiMMO-Workshop: Lagrange-Dualität und Partitionsmethoden in der nichtkonvexen globalen Optimierung. FU Berlin.

Other talks

  1. 15.10.2021: Copositive optimization and completely positive matrix factorization. Research Seminar, LAAS-CNRS, Toulouse, France

  2. 28.06.2021: Conic optimization. Part I: SOCPs and SDPs, Conic Duality Theory, and Solution Methods; Part II: Copositive Optimization. MINOA Doctoral School, Heidelberg (online).

  3. 18.05.2021: Factorization of Completely Positive Matrices. Oberseminar "Numerical Optimization", Universität Konstanz (online).
  4. 29.03.2021: Optimierung über konvexen Matrixkegeln. Universität Passau (online).
  5. 10.12.2020: On convex matrix cones and their use in mathematical optimization. TU Wien (online).
  6. 20.01.2020: On convex matrix cones and their use in mathematical optimization. Universität Innsbruck.
  7. 07.01.2020: Copositive optimization and completely positive matrix factorization, University of Ljubljana, Slovenia.
  8. 21.11.2019: Copositive optimization and completely positive matrix factorization, Budapest University of Technology and Economics, Hungary
  9. 19.09.2019: A factorization method for completely positive matrices. Operations Research Seminar, University of Tilburg, The Netherlands
  10. 13.06.2017: On copositive programming, quadratic optimization and combinatorics of infinite graphs. Mathematisches Kolloquium, University of Wuppertal
  11. 08.01.2017: Zur Lösung von quadratischen und kombinatorischen Problemen mittels copositiver Optimierung. University of Augsburg
  12. 13.12.2016: Copositive programming: a framework for quadratic and combinatorial optimization, Magdeburg Lectures on Optimization and Control.
  13. 02.06.2016: Conic Optimization: Theory, Algorithms, and Applications in Economics and Business. Wirtschaftsuniversität Wien, Austria
  14. 31.05.2016: Copositive programming: a framework for quadratic and combinatorial optimization. Goethe-University Frankfurt.
  15. 26.11.2015: Lösen quadratischer Probleme mittels semidefiniter und copositiver Optimierung. Mathematisches Kolloquium, TU Ilmenau.
  16. 24.11.2015: Solving quadratic problems via semidefinite and copositive optimization.  Kolloquium Numerische und Angewandte Mathematik, University of Göttingen.
  17. 26.03.2015: Copositive Optimization. Budapest University of Technology and Economics, Hungary.
  18. 02.02.2015: Vom Nutzen konvexer Kegel in der mathematischen Optimierung. University of Paderborn, Germany.
  19. 11.02.2013: Copositive Optimierung. Humboldt Universität Berlin.
  20. 08.10.2012: Copositive optimization, the copositive cone, and its relation with Parrilo's approximations. Optimization and Applications Seminar, ETH Zürich.
  21. 04.05.2012: Copositive Programming. Laboratoire de Recherche en Informatique, Université de Paris Sud, France.
  22. 11.04.2011: Recent developments in copositive programming. University of Vienna, Austria.
  23. 14.10.2010: On the cones of completely positive and doubly nonnegative matrices and their use in optimization. University of Ljubljana, Slovenia.
  24. 16.06.2010: Copositive Optimierung. University of Trier, Germany.
  25. 19.03.2010: The Difference Between 5 x 5 Doubly Nonnegative and Completely Positive Matrices. DIAMANT Intercity seminar on number theory, University of Groningen.
  26. 27.01.2010: Vom Nutzen konvexer Kegel in der mathematischen Optimierung. Mathematisches Kolloquium, Universität Oldenburg, Germany.
  27. 18.01.2010: Lösen quadratischer und binärer Probleme mittels copositiver Optimierung. University of Göttingen, Germany.
  28. 15.12.2009: The Difference Between 5 x 5 Doubly Nonnegative and Completely Positive Matrices. Université Paul Sabatier, Toulouse, France.
  29. 26.11.2009: Lösen quadratischer und binärer Probleme mittels copositiver Optimierung. University of Ulm, Germany.
  30. 04.11.2009: On the cones of completely positive and doubly nonnegative matrices and their use in optimization. EIDMA Seminar, TU Eindhoven.
  31. 29.09.2009: Optimization over matrix cones, and how this helps to solve nonconvex optimization problems. University of Groningen.
  32. 23.06.2009: A Linear Approximation Approach for Copositive Programming. Université Paul Sabatier, Toulouse, France.
  33. 19.05.2009: Conic Optimization beyond Semidefinite Programming. Universiteit Twente.
  34. 13.11.2008: Conic Optimization beyond Semidefinite Programming. Universität Karlsruhe.
  35. 21.04.2008: Vom Nutzen konvexer Kegel in der diskreten Optimierung. TU Dortmund.
  36. 18.04.2008: Über diskrete und kontinuierliche Optimierung, und warum Kegeloptimierung dabei hilft. Universität St. Gallen, Switzerland.
  37. 01.04.2008: On Discrete and Continuous Optimization, and Why Conic Programming Is Helpful. Rijksuniversiteit Groningen, The Netherlands.
  38. 11.10.2007: Optimization over Convex Cones: Semidefinite Programming and Beyond. Operations Research Seminar, Universiteit van Tilburg, The Netherlands.
  39. 18.07.2007: Copositive Programming. Optimization and Applications Seminar, ETH Zürich, Switzerland.
  40. 04.05.2007: Neue Ansätze in der Kegeloptimierung. TU Kaiserslautern, Germany.
  41. 15.01.2007: Optimierung über konvexen Kegeln: Theorie und Anwendungen. Kolloquium des Fachbereichs Mathematik der RWTH Aachen, Germany.
  42. 18.12.2006: Continuous Approaches to Discrete Problems by means of Optimization over Convex Cones. Seminar für Optimierung, Universität Erlangen, Germany.
  43. 11.12.2006: Towards solving Copositive Programs. Vienna Continuous Optimization Colloquium 06, Austria.
  44. 30.11.2006: Continuous Approaches to Discrete Problems by means of Optimization over Convex Cones. Departement de Mathematiques, FUNDP Namur, Belgium.
  45. 29.11.2006: Kontinuierliche Ansätze zur diskreten Optimierung mittels konvexer Kegel. Optimierungskolloquium des Fachbereichs Mathematik der Universität Dortmund, Germany.
  46. 21.06.2006: Optimierung über konvexen Kegeln: Kontinuierliche Reformulierungen und Relaxierungen für diskrete Probleme. Kolloquium des Fachbereichs Mathematik und Naturwissenschaften der Bergischen Universität Wuppertal
  47. 15.12.2005: Kontinuierliche Lösungsstrategien für diskrete Probleme am Beispiel des Maximum Clique Problems. Kolloquium des Fachbereichs Mathematik und Informatik der Philipps-Universität Marburg, Germany.
  48. 15.11.2005: Studieren geht über Probieren: Graphen, Bäume und das Problem des Handlungsreisenden. Schnuppertag für Schülerinnen, Darmstadt University of Technology, Germany.
  49. 04.07.2005: Das Maximum-Clique Problem an der Schnittstelle zwischen diskreter und kontinuierlicher Optimierung. Seminar, Darmstadt University of Technology, Germany.
  50. 21.06.2004: Deterministische und stochastische Ansätze zur nichtlinearen Optimierung. Seminar, Fachhochschule Dornbirn, Austria.
  51. 03.05.2004: Dualität in der Optimierung: Vom konvexen zum nichtkonvexen Problem. Seminar, Universität Erlangen, Germany.
  52. 10.11.2003: Globale Optimierung: Deterministische und stochastische Ansätze. Seminar, Darmstadt University of Technology, Germany.
  53. 07.11.2003: A Stochastic Algorithm for Global Optimization. Seminar, Wirtschaftsuniversität Wien, Austria.
  54. 30.05.2003: Solving Fractional Programs with Stochastic Algorithms. Anderson Graduate School of Management, University of California at Riverside, USA.
  55. 15.04.2003: Using Nonconvex Duality for Global Optimization. Optimization Seminar, Department of Mathematics, University of Washington, Seattle, USA.
  56. 08.04.2003: The Branch-and-Bound Method for Global Optimization. Industrial Engineering Seminar, University of Washington, Seattle, USA.
  57. 04.04.2003: Nonconvex Duality: Theory and Applications. Management Sciences Seminar, Henry B. Tippie College of Business, University of Iowa, Iowa City, USA.
  58. 27.06.2002: Nichtkonvexe Dualität in Theorie und Praxis. TU Clausthal, Deutschland.
  59. 28.05.2002: Nichtkonvexe Dualität in Theorie und Praxis. TU Darmstadt, Deutschland.
  60. 22.04.2002: ISDS-Kolloquium: Nonconvex Duality: Theory and Applications. Universität Wien.
  61. 22.08.2000: MINERVA Optimization Center Summer School "Modern Optimization and its Applications in Engeneering": On Copositive Programming and Standard Quadratic Optimization Problems. Technion - Israel Institute of Technology, Haifa, Israel.
  62. 12.04.1999: Disputationsvortrag zur mündlichen Doktorprüfung: Duality in Global Optimization: Optimality Conditions and Algorithmical Aspects. Universität Trier.
  63. 28.04.1998: Seminar des Graduiertenkollegs "Mathematische Optimierung": Das Branch-and-Bound Verfahren in der globalen Optimierung: Theorie und Anwendung auf ein Quotientenproblem. Universtiät Trier, Deutschland.
  64. 31.03.1998: Ein Branch-and-Bound Verfahren zur Lösung des Summe-von-Quotienten Problems. Seminar der Abteilung Mathematische Methoden in der Statistik, WU Wien.
  65. 07.02.1998: Was ist Mathematische Optimierung? Tag der offenen Tür der Abteilungen Mathematik und Informatik, Universität Trier.
  66. 02.12.1997: Arbeitskreis "Optimierung" der österreichischen Gesellschaft für Operations Research: Lagrange-Duality and Partitioning Techniques in Nonconvex Global Optimization. TU Wien.
  67. 19.11.1997: Forschungsseminar des Graduiertenkollegs "Automatisierung des Entwurfs analoger und gemischt analog-digitaler Strukturen": Lagrange-Dualität und Partitionsmethoden in der nichtkonvexen globalen Optimierung. TU Ilmenau, Deutschland.
  68. 27.06.1997: Lagrange-Dualität und Partitionsmethoden in der nichtkonvexen globalen Optimierung. Vortrag anläßlich der Evaluierung des Graduiertenkollegs "Mathematische Optimierung" durch Gutachter der Deutschen Forschungsgemeinschaft, Universität Trier.
  69. 23.10.1996: Seminar des Graduiertenkollegs "Mathematische Optimierung": Notwendige und hinreichende Bedingungen für globale Optimalität. Universität Trier.
  70. 08.07.1996: Seminar des Graduiertenkollegs "Mathematische Optimierung": Nichtparametrische Regression. Universität Trier.
  71. 10.06.1996: ISOC-Kolloquium: Nichtparametrische Regression. Universität Wien.

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