Daniel Lokshtanov

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Daniel Lokshtanov
Postdoc at UCSD
CS Building Room 4226, San Diego
daniello [4t] ii [d0t] uib [d0t] no
+1 858-534-5172
+1 858-534-7029
Department of Computer Science and Engineering
University of California, San Diego
La Jolla, CA 92093-0404

JOB OPENING; Starting September 2012 I will have a 4-year Phd. student position and a 2-year PostDoc position availiable as a part of the BeHard project on kernelization at the University of Bergen (Norway). Conctact me by e-mail if you are interested and have an excellent background in Combinatorics, Algorithms, Kernelization and/or Complexity Theory.

I enjoy hiking, skiing, fantasy, sci-fi, tennis, pants, cognac, parmesan and soccer. A couple (now way more than a couple) years ago I starred in Fana school theatre. I'm also the coordinator of the Norwegian high school Informatics Olympiad, NIO. Most of the reasearch I do is in algorithmic graph theory. My Phd. is in parameterized algorithms and complexity. Check out the Parameterized Complexity Wiki.


Events

IPEC 2011 --- MFCS 2011 --- ESA 2011 --- GROW 2011 --- FCT 2011
IPEC 2010 --- MFCS 2010 --- WORKER 2010 --- CIRM Workshop on Graph Decompositions 2010
AGAPE 2009



Journal Publications

Fedor Fomin, Daniel Lokshtanov, Venkatesh Raman and Saket Saurabh: Subexponential Algorithms for Partial Cover Problems. Information Processing Letters. Short version in the proceedings of FSTTCS 2009.

M.Fellows, F.Fomin, D.Lokshtanov, F. Rosamond, S. Saurabh, S. Szeider and C. Thomassen: On the Complexity of Some Colorful Problems Parameterized by Treewidth. Information and Computation. Short version in proceedings of COCOA 2007.

Fedor V. Fomin, Daniel Lokshtanov and Saket Saurabh: An Exact Algorithm for Minimum Distortion Embedding Theoretical Computer Science. Short version in the proceedings of WG 2009.

Daniel Lokshtanov, Venkatesh Raman, Saket Saurabh and Somnath Sikdar: On the Directed Degree-Preserving Spanning Tree Problem Journal of Discrete Optimization. Short version in the proceedings of IWPEC 2009.

Oren Ben-Zwi, Danny Hermelin, Daniel Lokshtanov, and Ilan Newman: Treewidth governs the complexity of target set selection. Journal of Discrete Optimization. Short version in proceedings of EC 2009

Daniel Lokshtanov, Matthias Mnich and Saket Saurabh: Linear Kernel for Planar Connected Dominating Set. Theoretical Computer Science. To appear. TAMC09 special issue. Short version in proceedings of TAMC 2009.

F.Fomin, J.Kratochvíl, D.Lokshtanov, F.Mancini and J.A.Telle: On the Complexity of Reconstructing H-free Graphs from their Star Systems. Journal of Graph Theory. To appear. Short version in proceedings of LATIN 2008.

Pinar Heggernes, Daniel Lokshtanov, Rodica Mihai and Charis Papadopoulos: Cutwidth of split graphs and threshold graphs. SIAM Journal on Discrete Mathematics. To appear. Short version in proceedings of WG 2008.

Fedor Fomin, Petr Golovach, Daniel Lokshtanov and Saket Saurabh: Intractability of Clique-width Parameterizations. SIAM Journal on Computing. To appear. Short version in proceedings of SODA 2009.

Daniel Lokshtanov: On the Complexity of Computing Treelength. Discrete Applied Math. Short version in proceedings of MFCS 2007.

Daniel Lokshtanov, Federico Mancini and Charis Papadopoulos: Computing and extracting minimal cograph completions in linear time. Discrete Applied Math. Short version in proceedings of FAW 2008.

M.Fellows, D.Lokshtanov, N.Misra, M.Mnich, F.Rosamond and S.Saurabh: The Complexity Ecology of Parameters: An Illustration Using Bounded Max Leaf Number. Theory Of Computing Systems. CIE07 special issue.

Daniel Lokshtanov: Finding the longest isometric cycle in a graph. Discrete Applied Math. WLAB05 special issue.

Pinar Heggernes and Daniel Lokshtanov: Optimal broadcast domination of arbitrary graphs in polynomial time. Discrete Mathematics. Short version in proceedings of WG 2005.



Conference Proceedings

Fedor V. Fomin, Daniel Lokshtanov, Saket Saurabh and Dimitrios M. Thilikos: Linear Kernels for (Connected) Dominating Set on H-minor-free graphs. To appear in the proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2012).

Fedor V. Fomin, Daniel Lokshtanov and Saket Saurabh: Bidimensionality and Geometric Graphs. To appear in the proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2012).

Pinar Heggernes, Pim van't Hof, Daniel Lokshtanov and Cristophe Paul: Obtaining a Bipartite Graph by Contracting Few Edges. To appear in the proceedings of Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2011).

P.Heggernes, P.van't Hof, B.Leveque, D.Lokshtanov and C.Paul: Contracting Graphs to Paths and Trees. Proceedings of the International Symposium on Parameterized and Exact Computation (IPEC 2011).

M.Cygan, D.Lokshtanov, M.Pilipczuk, M.Pilipczuk and S.Saurabh: On Cutwidth Parameterized by Vertex Cover. Proceedings of the International Symposium on Parameterized and Exact Computation (IPEC 2011).

M.Cygan, D.Lokshtanov, M.Pilipczuk, M.Pilipczuk and S.Saurabh: On The Hardness of Losing Width. Proceedings of the International Symposium on Parameterized and Exact Computation (IPEC 2011).

Daniel Lokshtanov, Matthias Mnich and Saket Saurabh: Planar k-Path in Subexponential Time and Polynomial Space. To appear in the proceedings of Workshop on Graph-Theoretic Concepts in Computer Science (WG 2011).

I.Adler,
S.G.Kolliopoulos
,
P.K.Krause
, D.Lokshtanov, S.Saurabh and D.Thilikos: Tight Bounds for Linkages in Planar Graphs. Proceedings of the International Colloquium on Automata, Languages and Programming (ICALP 2011).

Daniel Lokshtanov and Dániel Marx: Clustering with Local Restrictions. Proceedings of the International Colloquium on Automata, Languages and Programming (ICALP 2011).

Paul Bonsma and Daniel Lokshtanov: Feedback Vertex Set in Mixed Graps. Proceedings of the Algorithms and Data Structures Symposium (WADS 2011).

F.V.Fomin, D.Lokshtanov, N.Misra, G.Philip and S.Saurabh: Hitting forbidden minors: Approximation and Kernelization Proceedings of the Symposium on Theoretical Aspects of Computer Science (STACS 2011). Also on arXiv.

Fedor V. Fomin, Daniel Lokshtanov, Venkatesh Raman and Saket Saurabh:
Bidimensionality and EPTAS. Proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2011). Also on arXiv.

Daniel Lokshtanov, Dániel Marx and Saket Saurabh:
Known Algorithms on Graphs of Bounded Treewidth are Probably Optimal. Proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2011). Also on arXiv.

Daniel Lokshtanov, Dániel Marx and Saket Saurabh:
Slightly Superexponential Parameterized Problems. Proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2011).

M.Fellows, B.Jansen, D.Lokshtanov, F.Rosamond and S.Saurabh: Determining the Winner of a Dodgson Election is Hard. Proceedings of Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2010).

H.Fernau, F.V.Fomin, D.Lokshtanov, M. Mnich, G.Philip and S.Saurabh: Ranking and Drawing in Subexponential Time. Proceedings of the International Workshop on Combinatorial Algorithms (IWOCA 2010).

P.Heggernes, D.Lokshtanov, J.Nederlof, C.Paul and J.A.Telle: Generalized graph clustering: recognizing (p,q)-cluster graphs Proceedings of the Workshop on Graph-Theoretic Concepts in Computer Science (WG 2010).

Pinar Heggernes, Pim van't Hof, Daniel Lokshtanov and Jesper Nederlof: Computing the cutwidth of bipartite permutation graphs in linear time Proceedings of the Workshop on Graph-Theoretic Concepts in Computer Science (WG 2010).

Daniel Lokshtanov, Neeldhara Misra and Saket Saurabh: Imbalance is Fixed Parameter Tractable. Proceedings of International Computing and Combinatorics Conference (COCOON 2010)

Fedor Fomin, Daniel Lokshtanov, Venkatesh Raman and Saket Saurabh: Fast Local Search Algorithm for Weighted Feedback Arc Set in Tournaments. Proceedings of the Conference on Artificial Intelligence (AAAI 2010)

P.Heggernes, D.Kratsch, D.Lokshtanov, S. Saurabh and V.Raman: Fixed-parameter algorithms for Cochromatic Number and Disjoint Rectangle Stabbing. Proceedings of Scandinavian Symposium and Workshops on Algorithm Theory (SWAT 2010)

Fedor V. Fomin, Petr Golovach and Daniel Lokshtanov: Cops and Robber game without recharging. Proceedings of Scandinavian Symposium and Workshops on Algorithm Theory (SWAT 2010)

Daniel Lokshtanov and Jesper Nederlof: Saving Space by Algebraization. Proceedings of ACM Symposium on Theory of Computing (STOC 2010).

F. Dorn,F. Fomin, D. Lokshtanov, V. Raman and S. Saurabh: Beyond Bidimensionality: Parameterized Subexponential Algorithms on Directed Graphs. Proceedings of International Symposium on Theoretical Aspects of Computer Science (STACS 2010).

Fedor Fomin, Fabrizio Grandoni, Daniel Lokshtanov and Saket Saurabh: Sharp Separation and Applications to Exact and Parameterized Algorithms Proceedings of Latin American Theoretical Informatics Symposium (LATIN 2010).

Fedor Fomin, Daniel Lokshtanov, Saket Saurabh and Dimitrios M. Thilikos: Bidimensionality and Kernels Proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2010).

Fedor Fomin, Petr Golovach, Daniel Lokshtanov and Saket Saurabh: Algorithmic Lower Bounds for Problems Parameterized by Clique-width Proceedings of the ACM-SIAM Symposium on Discrete Algorithms (SODA 2010).

P.Golovach, P.Heggernes, D.Kratsch, D.Lokshtanov, D.Meister, and S.Saurabh: Bandwidth on AT-free graphs Proceedings of the International Symposium on Algorithms and Computation (ISAAC 2009).

Fedor V. Fomin, Petr Golovach and Daniel Lokshtanov: Guard games on Graphs: Keep the Intruder Out! Proceedings of Workshop on Approximation and Online Algorithms (WAOA 2009)

Daniel Lokshtanov and Saket Saurabh: Even Faster Algorithm for Set Splitting! Proceedings of the International Workshop on Parameterized and Exact Computation (IWPEC 2009)

Hans L. Bodlaender, Daniel Lokshtanov and Eelko Penninkx: Planar Capacitated Dominating Set is W[1]-hard. Proceedings of the International Workshop on Parameterized and Exact Computation (IWPEC 2009)

H.L.Bodlaender, F.V.Fomin, D.Lokshtanov, E.Penninkx, S.Saurabh and D.M.Thilikos: (Meta) Kernelization. Proceedings of the IEEE Symposium on Foundations of Computer Science (FOCS 2009).

Daniel Lokshtanov, Saket Saurabh and Somnath Sikdar: Simpler Parameterized Algorithm for OCT Proceedings of the International Workshop on Combinatorial Algorithms (IWOCA09)

Noga Alon, Daniel Lokshtanov, and Saket Saurabh: Fast FAST. Proceedings of the International Colloquium on Automata, Languages and Programming, Track A (ICALP09)

M.Fellows, F.Fomin, D.Lokshtanov, E.Losievskaja, F.Rosamond and S.Saurabh: Distortion is Fixed Parameter Tractable. Proceedings of the International Colloquium on Automata, Languages and Programming, Track A (ICALP09)

Michael Dom, Daniel Lokshtanov, and Saket Saurabh: Incompressibility through Colors and IDs. Proceedings of the International Colloquium on Automata, Languages and Programming, Track A (ICALP09)

M. Fellows, F. V. Fomin, D.Lokshtanov, F. A. Rosamond, S. Saurabh and Y. Villanger: Local Search: Is brute-force avoidable? To appear in the proceedings of the Joint Conference on Artificial Intelligence (IJCAI-09)

H.Fernau, F.Fomin, D.Lokshtanov, D.Raible, S.Saurabh and Y.Villanger: Kernel(s) for Problems With no Kernel: On Out-Trees With Many Leaves. Proceedings of the 26th International Symposium on Theoretical Aspects of Computer Science (STACS 2009)

M.Fellows, D.Lokshtanov, N.Misra, F. Rosamond and S. Saurabh: Graph Layout problems Parameterized by Vertex Cover. Proceedings of the International Symposium on Algorithms and Computation (ISAAC 2008).

Michael Dom, Daniel Lokshtanov, Saket Saurabh and Yngve Villanger: Capacitated Domination and Covering: A Parameterized Perspective. Proceedings of International Workshop on Exact and Parameterized Computation (IWPEC 2008)

Daniel Lokshtanov: Wheel-free deletion is W[2]-Hard. Proceedings of International Workshop on Exact and Parameterized Computation (IWPEC 2008)

Daniel Lokshtanov and Christian Sloper: Fixed Parameter Set Splitting, Obtaining a Linear Kernel and Improving Running Time. Proceedings of ACID 2005.

Technical Reports & Preprints

F.V.Fomin and Daniel Lokshtanov, V.Raman, B.V.R.Rao and S.Saurabh Faster Algorithms for Finding and Counting Subgraphs. On Arxiv.

Thesis

Daniel Lokshtanov: Phd Thesis, New Methods in Parameterized Algorithms and Complexity. Supervised by Pinar Heggernes. Submitted April 2009, Defended June 2009.

Daniel Lokshtanov: Master Thesis, Broadcast Domination. June 2006.

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