Homepage of Karen Aardal

Homepage of [Picture] Karen Aardal

Name       : Karen Aardal
Email      : K 'dot' I 'dot' Aardal 'at' tudelft 'dot' nl
Office     : 2.W.600
Address    : Delft Institute of Applied Mathematics,
             Faculteit EWI, Technische Universiteit Delft
             Van Mourik Broekmanweg 6
             2628 XE Delft
             The Netherlands
Phone      : +31 15 27 85093/84109

Here is a link to our Campus Map. We sit in building 28.

Research
Teaching
Editorial
Some interesting links

Research

Some recent papers:

J. Byrka, K. Aardal. An optimal bifactor approximation algorithm for the metric uncapacitated facility location problem. SIAM Journal on Computing 39, 2010, 2212--2241.
M. van Buuren, K. Aardal, R. van der Mei, H. Post. Evaluating dynamic dispatch strategies for emergency medical services: TIFAR simulation tool In: C. Laroque, J. Himmelspach, R. Pasupathy, O. Rose, A.M. Uhrmacher (eds.) Proceedings of the 2012 Winter Simulation Conference. IEEE, pp 1--12. doi: 10.1109/WSC.2012.6465214, ISBN 978-1-4673-4779-2.
K. Aardal, F. von Heymann. On the Structure of Reduced Kernel Lattice Bases. In: M. Goemans and J. Correa (eds.): Proceedings of IPCO 2013, Lecture Notes in Computer Science, Vol. 7801, Springer-Verlag, Heidelberg, pp 1-12, 2013.
K. Aardal, F. von Heymann. On the structure of reduced kernel lattice bases. Mathematics of Operations Research 39(3), 2014, 823-840. Permalink. Extended version of the previous paper.
K. Aardal, P. Le Bodic. Approximation algorithms for the Transportation Problem with market choice and related models. Operations Research Letters 42(8), 2014, 549-542.
P.L. van den Berg, K. Aardal. Time-dependent MEXCLP with startup and relocation cost. European Journal of Operational Research 242(2), 2015, 383-389.
K. Aardal, P.L. van den Berg, D. Gijswijt, and S. Li. Approximation Algorithms for Hard Capacitated k-facility Location Problems. European Journal of Operational Research 242(2), 2015, 358-368.
R. Kerkkamp, K. Aardal. A constructive proof of swap local search worst-case instances for the maximum coverage problem. Operations Research Letters 44(3), 2016, 329-335.
J. Røislien, P.L. van den Berg, T. Lindner, E. Zakariassen, K. Aardal. Exploring optimal air ambulance base locations in Norway using advanced mathematical modelling. Injury Prevention 23(1), 2017, 10-15.
M. van Engelen, O. Cats, H. Post, K. Aardal. Demand-Anticipatory Flexible Public Transport Service. Transportation Research E 110, 2018, 110-121. https://doi.org/10.1016/j.tre.2017.12.015 .
J. Røislien, P.L. van den Berg, T. Lindner, E. Zakariassen. O. Uleberg, K. Aardal, J.T. van Essen. Comparing population and incident data for optimal air ambulance base locations in Norway. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine 26(42), 2018, 2-11.
K. Aardal, F.J. von Heymann, A. Lodi, A. Tramontani, L.A. Wolsey. Lattice reformulation cuts. Under review.

Teaching

In 2020/21 I teach

IN4301 Advanced Algorithms, MSc Computer Science.
WI4410 Advanced Discrete Optimization, MSc Applied Mathematics.
BSc- and MSc-projects.

Editorial

1998 - 2008: Associate editor of Operations Research Letters
1999 - 2006: Associate editor of INFORMS Journal on Computing
2000 -: Associate editor of Mathematical Programming B
2003-2013: Associate editor of Networks
Guest editor, with Rekha Thomas, of Mathematical Programming B, Vol. 96, Number 2, 2003, on Algebraic and Geometric Methods in Discrete Optimization
Co-editor (with G. Nemhauser and R. Weismantel) of Discrete Optimization, volume 12 in the series Handbooks in Operations Research and Management Science Elsevier, 2005.
2000 -: Principal Coordinator of Optimization Online -- an eprint site for the optimization community
2006 - 2018: Area editor of Design and Analysis of Algorithms, INFORMS Journal on Computing
2013 -: Associate editor of RAIRO
2013 -: Editor of EURO Journal on Computational Optimization

I am a member of the Academic Advisory Board of Mathematics in Open Access.

Research

Some recent papers:

Teaching

Editorial

Links