Dr. Monika Henzinger

 

Faculty of Computer Science
University of Vienna
Room 6.32
Waehringerstrasse 29/6.32
1090 Wien-Vienna, Austria

email: monika.henzinger@univie.ac.at
phone +43-1-4277-78310
web: personal homepage

Full Professor (Computer Science), Deputy Speaker

Research area in the programme
Combinatorial optimization algorithms

 

Keywords

  • combinatorial algorithms
  • efficient algorithms and data structures
  • approximation algorithms for combinatorial optimization problems

Research Interests

Combinatorial algorithms, especially on graphs, efficient algorithms and data structures, approximation algorithms for combinatorial optimization problems

Know-how and infrastructure of the research group

Monika Henzinger is a leading researcher in the area of combinatorial optimization and efficient algorithms and data structures. She is working on questions arising in graph algorithms, online algorithms, and approximation algorithms as well as graph games and algorithmic game theory. She is the principle investigator of the 2013 ERC Advanced Grant on graph algorithms and their applications.

In recent years she has focused on dynamic graph algorithms as well as optimization problems arising in computational biology, computer verification, and in internet advertisement. In a recent line of work (Henzinger, Krinninger, and Nanongkai 2013a, Henzinger, Krinninger, and Nanongkai 2013b, Henzinger, Krinninger, and Nanongkai 2014a, Henzinger, Krinninger, and Nanongkai 2014b,  Henzinger, Krinninger, and Nanongkai 2014c) she consecutively improved the running time for decremental graph algorithm for maintaining approximate shortest paths finally resulting in  the first decremental graph algorithm for maintaining approximate shortest paths in undirected weighted graphs that takes near-constant time per update (Henzinger, Krinninger, and Nanongkai 2014a) and the first such algorithm in directed weighted graphs that takes sublinear time per update   (Henzinger, Krinninger, and Nanongkai 2014b). 

She also gave the first constant-factor approximation algorithm for maximizing a submodular function under viablility constraints, which is a certain type of non-downward closed constraints arising in computational biology (Dvorak, Henzinger, and Williamson 2013). She also published a sequence of papers on optimization problems arising in internet advertising, especially in sponsored search auctions (Duetting, Henzinger, and Starnberger 2013, Duetting, Henzinger, and Weber 2013a, 2013b, Duetting, Henzinger, and Starnberger 2012, Colini-Baldeschi et al 2012, Henzinger and Vidali 2011, Feldman et al 2010).

She also gave recently the first decremental graph algorithm for maintaining approximate shortest paths in directed undirected uncapacitated graphs that takes sublinear time per update (Henzinger, Krinninger, and Nanongkai 2014). She also gave the first linear-time deterministic (1+ε) approximate shortest path algorithm (Henzinger, Krinninger, and Nanongkai 2013).She also recently gave the first constant-factor approximation algorithm for maximizing a submodular function under  viablility constraints, which is a certain type of non-downward closed constraints arising in computational biology (Dvorak, Henzinger, and Williamson 2013).

Collaborations within the VGSCO

With Neumaier on topics related to spectral techniques for optimization problems on graphs, with Raidl on topics related to efficient algorithms and with Bomze on computational game theory.

Scientific CV

Study of Computer Science at the University of the Saarland (Saarbruecken), Diplom (1989), Ph.D. in Computer Science at Princeton University (1993). Assistant Professor Cornell University (1993-1996). Research Scientist at Digital Equipment Corporation (1996-1999). Associate Professor of Computer Science at the University of the Saarland (1999). Director of Research at Google Inc (1999-2005), Professor of Computer Science at the Ecole Polytechnique Federale de Lausanne (2005-2009). Professor of Computer Science at the University of Vienna (2009 -).

Editor of two books, and author of more than 40 publications in refereed journals and over 60 publications in refereed conferences, such as:  Journal of the ACM, SIAM Journal of Computing,  Journal of Computer and System Sciences, Algorithmica, Journal of Algorithms, Theoretical Computer Science, IEEE Transactions on the Web,  IEEE Symposium on Foundations of Computer Science,  ACM Symposium on Theory of Computing, ACM/SIAM Symposium on Discrete Algorithms.

Publications

Showing entries 0 - 10 out of 94

Chatterjee, K, Dvovrák, W, Henzinger, M & Svozil, A 2018, Quasipolynomial Set-Based Symbolic Algorithms for Parity Games. in LPAR-22. 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning. EPiC Series in Computing, vol. 57, pp. 233-253. doi.org/10.29007/5z5k


Goranci, G, Henzinger, M & Leniowski, D 2018, A Tree Structure for Dynamic Facility Location. in 26th Annual European Symposium on Algorithms (ESA 2018)., 39, Leibniz International Proceedings in Informatics (LIPIcs), vol. 112. doi.org/10.4230/LIPIcs.ESA.2018.39


Goranci, G, Henzinger, M & Peng, P 2018, Dynamic Effective Resistances and Approximate Schur Complement on Separable Graphs. in 26th Annual European Symposium on Algorithms (ESA 2018)., 40, Leibniz International Proceedings in Informatics (LIPIcs), vol. 112. doi.org/10.4230/LIPIcs.ESA.2018.40


Chatterjee, K, Henzinger, M, Loitzenbauer, V, Oraee, S & Toman, V 2018, Symbolic Algorithms for Graphs and Markov Decision Processes with Fairness Objectives. in 30th International Conference on Computer Aided Verification (CAV 2018). doi.org/10.1007/978-3-319-96142-213


Chatterjee, K, Dvovrák, W, Henzinger, M & Svozil, A 2018, Algorithms and Conditional Lower Bounds for Planning Problems. in The 28th International Conference on Automated Planning and Scheduling.


Biedermann, S, Henzinger, M, Schulz, C & Schuster, B 2018, Memetic Graph Clustering. in 7th International Symposium on Experimental Algorithms (SEA 2018). Leibniz International Proceedings in Informatics (LIPIcs). doi.org/10.4230/LIPIcs.SEA.2018.3


Showing entries 0 - 10 out of 94