Angelika WiegeleAddress

resident in Klagenfurt am Wörthersee, Austria.current

affiliationAlpen-Adria-Universität Klagenfurt, Faculty of Technical Sciences, Institutfür Mathematik, Universitätsstr. 65-67, 9020 Klagenfurt am Wörthersee.

phone/fax +43 (0)463 2700 3119, +43 (0)463 2700 99 3119.email/www angelika.wiegele@aau.at, www.aau.at/~anwiegel.

EducationMar 2013 Venia docendi for Applied Mathematics, Alpen-Adria-Universität Klagenfurt.

Degree: Privatdozentintitel of the

thesisOn Semidefinite Programming for Quadratic Optimization.

May 2002–Oct 2006

Doctoral studies in Mathematics, Alpen-Adria-Universität Klagenfurt.Degree: Dr. techn., passed with distinction

title of thethesis

Nonlinear Optimization Techniques applied to Combinatorial OptimizationProblems, Supervisor: Franz Rendl.

Oct 1994–May 2001

Diploma studies in Mathematics, Alpen-Adria-Universität Klagenfurt.Degree: Dipl.-Ing., passed with distinction

title of thethesis

Efficient polystyrene cutting, Supervisor: Franz Rendl.

Sep 1998–Jun 1999

Socrates Exchange Student, City University London, Mathematics Department.

Jun 1994 Matura, Höhere Technische Bundes-, Lehr- und Versuchsanstalt Villach.passed with distinction

Academic employmentsince August

2013Associate Professor, Alpen-Adria-Universität Klagenfurt, Institut für Mathematik.

Mar 2007–Jul 2013

Senior assistant professor (Assistenzprofessorin), Alpen-Adria-Universität Kla-genfurt, Institut für Mathematik.

Sep 2007–Dec 2007

Researcher, IASI-CNR, Rome.

Dec 2006–Feb 2007

Researcher, Universität zu Köln, Institut für Informatik.

Mar 2004–Nov 2006

Research and teaching assistant (Universitätsassistentin), Alpen-Adria-Universität Klagenfurt, Institut für Mathematik.

Mar 2006–May 2006

Researcher, IASI-CNR, Rome.

May 2002–Feb 2004

Research stipendiary (Wissenschaftliche Mitarbeiterin in Ausbildung), Alpen-Adria-Universität Klagenfurt, Institut für Mathematik.

Sep 2001–Feb 2002

Research and teaching assistant (Universitätsassistentin), Technische Univer-sität Graz, Institut für Mathematik B.

Mar 2000–Jun 2000

Industrial project, TU Eindhoven, Department of Mathematics and ComputerScience, Supervisor: Rudi Pendavingh.

Publications in peer-reviewed journals and book chapters[1] An Optimization-Based Sum-of-Squares Approach to Vizing’s Conjecture, ac-

cepted at ISSAC 2019, 19 pages, arxiv.org/abs/1901.10288.with Elisabeth Gaar, Daniel Krenn, and Susan Margulies

[2] SDP-based branch-and-bound for non-convex quadratic integer optimization,Journal of Global Optimization, 73:485–514, 2019, doi.org/10.1007/s10898-018-0717-z.with Christoph Buchheim and Maribel Montenegro

[3] QPLIB: A Library of Quadratic Programming Instances, accpeted for publicationin Mathematical Programming Computation, 29 pages, doi.org/10.1007/s12532-018-0147-4.with Fabio Furini, Emiliano Traversi, Pietro Belotti, Antonio Frangioni, Ambros Gleixner,Nick Gould, Leo Liberti, Andrea Lodi, Ruth Misener, Hans Mittelmann, Nikolaos Sahinidis,and Stefan Vigerske

[4] Using a factored dual in augmented Lagrangian methods for semidefi-nite programming, Operations Research Letters, 46(5): pp 523–528, 2018,doi.org/10.1016/j.orl.2018.08.003.with Marianna De Santis and Franz Rendl

[5] Another pedagogy for mixed-integer Gomory, EURO Journal on ComputationalOptimization, 5(4): pp 455–466, 2017, doi.org/10.1007/s13675-017-0085-3.with Jon Lee

[6] Using a conic bundle method to accelerate both phases of a quadratic con-vex reformulation, INFORMS Journal on Computing, 29(2): pp 318–331, 2017,doi.org/10.1287/ijoc.2016.0731.with Alain Billionnet, Sourour Elloumi and Amélie Lambert

[7] Mixed-integer Nonlinear Optimization: A Hatchery for Modern Mathematics,Oberwolfach Report, 12:2701–2766, 2015, doi:10.4171/OWR/2015/46.with Leo Liberti and Sebastian Sager

[8] A coordinate ascent method for solving semidefinite relaxations of non-convexquadratic integer programs, Lecture Notes in Computer Science: CombinatorialOptimization, pp 110–122, doi:10.1007/978-3-319-45587-7_10.with Christoph Buchheim and Maribel Montenegro

[9] Exact Solution Methods for the k-item Quadratic Knapsack Problem, Lec-ture Notes in Computer Science: Combinatorial Optimization, pp 166–176,doi:10.1007/978-3-319-45587-7_15.with Lucas Létocart

[10] A Hierarchy of Subgraph Projection-Based Semidefinite Relaxations for someNP-Hard Graph Optimization Problems., INFOR: Information Systems and Op-erational Research, 53(1), 40–48, 2015, doi:10.3138/infor.53.1.40.with Elspeth Adams, Miguel F. Anjos, and Franz Rendl

[11] Solving k-way graph partitioning problems to optimality: the impact ofsemidefinite relaxations and the bundle method, In: Facets of CombinatorialOptimization, Festschrift for Martin Grötschel, pages 355-386. Springer, Berlin, 2013,doi:10.1007/978-3-642-38189-8_15.with Miguel Anjos, Bissan Ghaddar, Lena Hupp, and Frauke Liers

[12] Semidefinite relaxations for non-convex quadratic mixed-integer program-ming, Math. Programming, 141(1, Ser. A):435–452, 2013, doi:10.1007/s10107-012-0534-y.with Christoph Buchheim

[13] On time complexity of semidefinite programs arising in polynomial optimiza-tion, Croatian Operational Research Review, 3:126–136, 2012, hrcak:142450.with Igor Klep and Janez Povh

[14] Computational approaches to max-cut, In Handbook on Semidefinite, Conic andPolynomial Optimization, volume 166 of International Series in Operations Research& Management Science, pages 821–847, 2012, doi:10.1007/978-1-4614-0769-0_28.with Laura Palagi, Veronica Piccialli, Franz Rendl, and Giovanni Rinaldi

[15] Solving max-cut to optimality by intersecting semidefinite and polyhedral re-laxations, Math. Programming, 121(2, Ser. A):307–335, 2010, doi:10.1007/s10107-008-0235-8.with Franz Rendl and Giovanni Rinaldi

[16] Exact algorithms for the quadratic linear ordering problem, INFORMS Journalon Computing, 22(1):168–177, 2010, doi:10.1287/ijoc.1090.0318.with Christoph Buchheim and Lanbo Zheng

[17] Building a quantum network: how to optimize security and expenses, Journalof Network and Systems Management, 18:283–299, 2010, doi:10.1007/s10922-010-9162-0.with Stefan Rass and Peter Schartner

[18] Regularization methods for semidefinite programming, SIAM Journal on Opti-mization, 20(1):336–356, 2009, doi:10.1137/070704575.with Jérôme Malick, Janez Povh, and Franz Rendl

[19] A branch and bound algorithm for max-cut based on combining semidefiniteand polyhedral relaxations, In Integer programming and combinatorial optimization,volume 4513 of Lecture Notes in Computer Science, pages 295–309. Springer, Berlin,2007, doi:10.1007/978-3-540-72792-7_23.with Franz Rendl and Giovanni Rinaldi

[20] A boundary point method to solve semidefinite programs, Computing,78(3):277–286, 2006, doi:10.1007/s00607-006-0182-2.with Janez Povh and Franz Rendl

Research grants2018–2021 Horizon 2020, Marie Skłodowska-Curie ITN, MINOA - Mixed-Integer Nonlinear

Optimisation Applications, e 255k.2017–2020 Austrian Science Fund (FWF) and Slovene Research Agency (ARRS), High-

Performance Solvers for Binary Quadratic Problems, e 279k (FWF) plus e 264k(ARRS).

2011–2012 ÖAD – Austrian agency for international cooperation in education and re-search, Algorithms for matricial polynomials, Bilateral research project with Slovenia.PI in Slovenia: Igor Klep, travel grants e 5k.

Jul 2009 FFG – Austrian Research Promotion Agency, generation innovation Praktika,Project for integrating talented undergraduates in research projects, e 1k.

2008–2009 Forschungsrat der AAU, A low-rank approach for solving sparse max-cut problems,Research project jointly with Veronica Piccialli, travel grants e 1.6k.

Teaching experienceI have been teaching at the University of Klagenfurt and at the Technical University of Graz(Winter term 01/02). My teaching includes lectures and exercise sessions for the study programsmathematics, computer science, information technology, business administration, and for teachertraining (mathematics and computer science) at bachelor’s and master’s level.The courses given include Operations Research (Linear Programming), Nonlinear Programming,Combinatorics and Graph Theory, Algorithmic Graph Theory, Selected Topics in Graph Theory,Computermathematics, Integer Programming and Mathematics for Business Administration.

Supervision of studentsPhD students

ongoing Nicolò Gusmeroli.ongoing Shudian Zhao.

Master’s and bachelor’s students2018 An SDP-Based Approach for Finding the Stability Number of a Graph, mas-

ter’s thesis, Student Melanie Siebenhofer, co-supervision with Elisabeth Gaar.2018 Diskrete Optimierung zur Erstellung energieeffizienter Fahrpläne für die Eisen-

bahn, master’s thesis, Student Flavio Angeloni.2017 Polynomial Optimization and Semidefinite Programming, bachelor’s thesis, Stu-

dent Sarah Frisch.2017 Catalan Zahlen: Definitionen, Eigenschaften, Interpretationen und Anwen-

dungen, bachelor’s thesis, Student Flavio Angeloni.2015 Online-Optimierung in der Telekommunikation, bachelor’s thesis, Student Mitar

Šiko.2015 Anwendung von Max-Cut-Solvern im Bereich Sport Scheduling, bachelor’s

thesis, Student Raphael Wigoutschnigg.2014 Solving Portfolio Selection Problems using QMIST, Intern, Student Lucile

Brethome.

2013 k-item quadratisches Rucksackproblem, master’s thesis, Student Bettina Skreinig.2013 Online Graphfärbung, bachelor’s thesis, Student Selina Schoas.2013 Das Quadratische Rucksackproblem und seine Transformation in das Max-

Cut Problem, bachelor’s thesis, Student Larissa Janz.2013 Das k-Cluster Problem und seine Transformation in ein Max-Cut Problem,

bachelor’s thesis, Student Ramona Pekastnig.2012 Optimierung in der Photovoltaik Produktion, Industrial project at KIOTO Pho-

tovoltaics GmbH, Student Bettina Skreinig.2011 Approximationsalgorithmen für das Färbungsproblem bei Graphen und Hyper-

graphen, bachelor’s thesis, Student Julia Ressmann.2011 Optimaler Ressourceneinsatz bei der Herstellung von Metallegierungen, In-

dustrial project at Treibacher Industrie AG, Student Dominic Imsirovic.2009 Optimization of picture-point generation for aerial mapping, Diploma thesis as

part of the cDrones project, Student Karin Kruggel.

Invited talks at conferences and seminar talks (selected)Mar 2019 Women in Optimization, Semidefinite Programmierung und Kombinatorische Op-

timierung: eine Symbiose, Bonn.Jul 2018 16th EUROPT Workshop on Advances in Continuous Optimization, Algorith-

mic Approaches for Semidefinite Programming Applied to Combinatorial Optimization,Almería, plenary talk.

Jun 2018 Cologne Twente Workshop on Graphs and Combinatorial Optimization 2018,Modeling and Solving Combinatorial Optimization Problems using Semidefinite Pro-gramming, Paris, plenary talk.

Feb 2018 Dagstuhl Seminar Designing and Implementing Algorithms for Mixed-IntegerNonlinear Optimization, Combining ADAL with Factorizing the Dual to Solve SDP,Dagstuhl.

May 2017 Oberseminar Diskrete Optimierung, SDP-bounds for Solving the k-itemQuadratic Knapsack Problem, Dortmund.

Apr 2014 MINO/COST Spring School on Convex Optimization and Applications,Semidefinite Optimization: Algorithms, Klagenfurt.

Aug 2013 Isaac-Newton-Institute for Mathematical Sciences, Semidefinite Relaxations forvarious non-convex quadratic optimization problems, Cambridge.

Feb 2013 Université Paris 13, LIPN, Discrete Optimization Using Semidefinite Methods,Paris.

Apr 2010 European Workshop on Mixed Integer Nonlinear Programming, Using SDP forSolving MIQP, CIRM Marseille.

Jun 2009 Mixed Integer Programming Workshop MIP 2009, An SDP Relaxation forSparse Max-Cut Problems, Berkley.

Feb 2009 Oberseminar Institut für Informatik, Solving Combinatorial Optimization Prob-lems using the Bundle Method, Cologne.

Feb 2008 Emory Combinatorics Seminar, Solving Max-Cut Using Semidefinite Program-ming, Atlanta.

Oct 2007 Jahrestagung der Österreichischen Gesellschaft für Operations Research,Nonlinear Optimization Techniques Applied to Combinatorial Optimization Prob-lems, Vienna.

Feb 2007 Technische Universität Dortmund, Ein exakter Lösungsalgorithmus des Max-CutProblems, Dortmund.

Feb 2007 Tilburg University, Biq Mac - a solver for BInary Quadratic and MAx-Cut problems,Tilburg.

Jan 2007 Konrad-Zuse-Zentrum für Informationstechnologie Berlin, Mixing semidefiniteand polyhedral relaxations in a Branch and Bound framework for solving the Max-Cutproblem, Berlin.

Selected presentations at conferences and workshopsSep 2018 European Women in Mathematics General Meeting 2018, Upper Bounds on

Combintorial Optimization Problems through an Augmented Lagrangian Algorithm,Graz.

Mar 2018 7th International Conference on High Performance Scientific Computing, Im-proving Alternating Direction Augmented Lagrangian Methods for Solving SDP bya Dual Step, Hà nô. i.

Jul 2016 The 5th International Congress on Mathematical Software, Improving BiqMac,Berlin.

Jan 2013 17th Combinatorial Optimization Workshop, A new strengthening of semidefinitemax-cut relaxations, Aussois.

Aug 2012 21st International Symposium on Mathematical Programming, Lasserre Hier-archy from a Computational Point of View, Berlin.

Jul 2011 Optimization 2011, An Exact Solution Method for Non-Convex MIQP, Lisbon.May 2011 SIAM Conference on Optimization, A Semidefinite Relaxation for Sparse Max-

Cut Problems, Darmstadt.Jan 2010 14th Combinatorial Optimization Workshop, Using SDP for solving Non-Convex

MIQP, Aussois.Sep 2009 17. Kongress der Österreichischen Mathematischen Gesellschaft, First Exper-

iments with an SDP based Branch-and-Bound Algorithm for solving non-convex QP,Graz.

Nov 2008 Mixed-Integer Nonlinear Optimization: Algorithmic Advances and Applica-tions, Exact Algorithms for the Quadratic Linear Ordering Problem, IMA, Min-neapolis, poster presentation.

May 2008 SIAM Conference on Optimization, Solving Quadratic 0 − 1 and Max-Cut Prob-lems by Semidefinite Programming, Boston.

Jun 2007 IPCO 2007, The 12th Conference on Integer Programming and CombinatorialOptimization, Cornell University, A Branch and Bound Algorithm for Max-CutBased on Combining Semidefinite and Polyhedral Relaxations, Ithaca, New York.

Jan 2006 10th Combinatorial Optimization Workshop, SDP based Branch & Bound forMax Cut, Aussois.

May 2005 8th SIAM Conference on Optimization, A boundary point method for Semidef-inite Programs, Stockholm.

Mar 2005 9th Combinatorial Optimization Workshop, A boundary point method forSemidefinite Programs, Aussois.

Sep 2004 FRICO 04 – 8th Workshop on Combinatorial Optimization, Semidefinite Re-laxierungen für das Max-Cut Problem, Cottbus.

May 2004 Workshop on Large Scale Nonlinear and Semidefinite Programming, Semidef-inite relaxations for sparse Max-Cut problems, Waterloo, poster presentation.

Dec 2003 Carinthian/Cologne Combinatorics and latest optimization research exchangeseminar, Nutzung von Information 2. Ordnung zur Beschleunigung der SpectralBundle Methode, Cologne.

Sep 2003 Operational Research Peripatetic Postgraduate Programme, Semidefinite re-laxations for sparse Max-Cut problems, Lambrecht.

Aug 2003 18th International Symposium on Mathematical Programming, Semidefiniterelaxations for sparse Max-Cut problems, Copenhagen.

Mar 2003 7th Combinatorial Optimization Workshop, Semidefinite relaxations for sparseMax-Cut problems, Aussois.

Nov 2002 IASI Workshop on Bundle Methods and Max-Cut Problems, Semidefinite re-laxations for the Max-Cut problem, Rome.

Sep 2002 FRICO 02 – 6th Workshop on Combinatorial Optimization, Verschnittmin-imierung in der Verpackungsindustrie – eine Lösung des eindimensionalen CuttingStock Problems durch Column Generation, Cologne.

Research visits2017 Universitá di Roma La Sapienza, Dipartimento di Informatica e Sistemistica,

one week.2013, 2014 Laboratoire d’Informatique de l’Université Paris Nord, Institut Galilée, two

weeks each.2013 Isaac-Newton-Institute for Mathematical Sciences, Cambridge, two weeks.2012 Ecole Polytechnique de Montreal, Département de mathématiques et de

génie industriel, one week.2012 Universität Erlangen, Department Mathematik, one week.

2009, 2011,2013

TU Dortmund, Fakultät für Mathematik, one week each.

2009, 2011 Univerza v Ljubljani, Fakulteta za matematiko in fiziko, three days each.2009 TU München, Fakultät für Mathematik, one week.2008 Universitá di Bologna, Dipartimento di Elettronica, Informatica, Sistemistica,

one week.2008 Universitá di Roma La Sapienza, Dipartimento di Informatica e Sistemistica,

one week.2008 Emory University, Department of Mathematics & Computer Science, one

week.2005 Centre de recherche Inria, Grenoble, one week.

2004, 2009,2010, 2011,

2012

Universität zu Köln, Institut für Informatik, 4 weeks in total.

2002, 2005 IASI – CNR Rome, one week each.

Awards2013 Offer W2-professorship (5 years) “Diskrete Optimierung” at TU Berlin,

declined.2012 Förderungspreis für Naturwissenschaften/Technische Wissenschaften des

Landes Kärnten.2008 Die Lupe 2008 – Award for excellent science communication.2007 ÖGOR BA-CA Dissertations Preis für Operations Research.2007 Preis der Dr.-Maria-Schaumayerstiftung.2004 Best Poster Presented by a Student at Fields-MITACS Large Scale Nonlinear

and Semidefinite Programming Workshop (Waterloo).2003 Förderstipendium des Studiendekanats der Fakultät für Wirtschaftswis-

senschaften und Informatik.

RefereeI act as a referee for the Journals Mathematical Programming A, B, and C, SIAM Journal onOptimization, Nature Physics, Discrete Applied Mathematics, Discrete Optimization, Journal ofCombinatorial Optimization, 4OR, Optimization Methods & Software, Computers and OperationsResearch, Naval Research Logistics, Operations Research Letters, Journal of Global Optimization,INFORMS Journal on Computing.

Organization of conferences and workshopsI organized or co-organized the following scientific events.

Jun 2–7,2019

Workshop Mixed-integer Nonlinear Optimization: A Hatchery for ModernMathematics, Mathematisches Forschungsinsitut Oberwolfach.

2018/2019 Member of the Program Committee of EUROPT 2019 – The 17th Workshopon Advances in Continuous Optimization, University of Strathclyde.

2018/2019 Member of the Program Committee of IPCO 2019 – The 20th Conference onInteger Programming and Combinatorial Optimization, Ann Arbor, Michigan,USA.

July 2018 Stream organizer (Conic Programming, Quadratic Programming and Semi-Definite Programming) at the ISMP 2018, Bordeaux.

Dec 6–9,2017

5th Alpen-Adria-Workshop on Optimization, Klagenfurt.

Nov 4–6,2016

4th Alpen-Adria-Workshop on Optimization, Klagenfurt.

Oct 18–24,2015

Workshop Mixed-integer Nonlinear Optimization: A Hatchery for ModernMathematics, Mathematisches Forschungsinsitut Oberwolfach.

Apr 7–11,2014

MINO/COST Spring School on Convex Optimization and Applications,Klagenfurt.

May 12–14,2011

2nd Alpen-Adria Optimization Workshop, Klagenfurt.

Aug 20–Sep3, 2010

Euro Summer Institute (ESI), Klagenfurt.

Jun 3–5,2010

1st Alpen-Adria Optimization Workshop, Klagenfurt.

Feb 24–28,2007

Carinthian/Cologne combinatorics and latest optimization research exchangeseminar, Innerkrems.

Feb 11–15,2006

Carinthian/Cologne combinatorics and latest optimization research exchangeseminar, Innerkrems.

Sep 18–23,2005

Mathematik 2005 – 16. Internationaler Kongress der Österreichischen Math-ematischen Gesellschaft und Jahrestagung der Deutschen Mathematiker-Vereinigung, Klagenfurt.

Sep 12–16,2005

Doctoral school on: Optimization over Polynomials and Semidefinite Pro-gramming, Klagenfurt.

Feb 16–20,2005

Carinthian/Cologne combinatorics and latest optimization research exchangeseminar, Innerkrems.

Apr 26–28,2004

21st LL-Seminar (Leoben-Ljubljana) on Graph Theory, Klagenfurt.

Sep 12–13,2003

FRICO 03 – 7th Workshop on Combinatorial Optimization, Klagenfurt.

Sep 2–5,2002

OR2002 – International Conference on Operations Research, Klagenfurt.

Administrative activitiessince 2018 Head of the Department of Mathematics.

2018 Member of a habilitation committee at Alpen-Adria-Universität.2018 Head of a hiring committee at Alpen-Adria-Universität.

2007–2018 Head of the Curricularkommission Mathematik.2017 Member of a habilitation committee at Alpen-Adria-Universität.2016 Member of a hiring committee (Berufungskommission Smart Grids) at the

Alpen-Adria-Universität.2010–2016 Member of the senate.since 2015 Head of the PR Team of the Faculty of Technical Sciences.since 2015 Faculty representative in the “Nachhaltigkeitsbeirat” (EMAS).

2015 Member of a habilitation committee at the Alpen-Adria-Universität.2014 Member of a habilitation committee at the Alpen-Adria-Universität.2013 Member of a hiring committee (Berufungskommission Embedded Systems)

at the Alpen-Adria-Universität.2010–2013 Member of the Curricularkommission Informationstechnik.

2011 Member of a habilitation committee at the Alpen-Adria-Universität.2011 Member of a hiring committee (Berufungskommission Diskrete Mathematik)

at the Alpen-Adria-Universität.2009/2010 Administrative supervisor of the Mathematics Erasmus Incoming Students

(Mauro Piacentini, Sabine Trefond).

Public relationssince 2008 Presentations and workshops in high schools and barracks.since 2008 Participation at fairs and various events in high schools.2008, 2010 Lange Nacht der Forschung.2008–2011 Supervision of pupils under the project “Forschung macht Schule”, (july each

year).2005–2008 “FiT – Frauen in die Technik” - for the advancement of women in mathe-

matics: information days, career brunch, mentoring program, interviews onthe radio and for newspapers, etc.