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Nicolas Bousquet
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nicolas.bousquet@grenoble-inp.fr
Phone: +334 56 57 48 19
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CNRS Researcher, G-SCOP, Grenoble, France.
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Bureau H327
Laboratoire G-SCOP
46, avenue Félix Viallet
38031 Grenoble Cedex 1 - FRANCE
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Since October 2016, I am a CNRS researcher in Grenoble in the G-SCOP laboratory. I am a member of the Combinatorial Optimization (OC) team.
Formerly, I was an ATER (temporary assistant professor position) in Ecole Centrale de Lyon during the academic year 2015-2016. I was a member of the LIRIS laboratory in the GOAL (Graphes, AlgOrithmes et AppLications) team. Before, I was a postodoctoral fellow at the Department of Mathematics and Statistics at McGill University where I worked with Adrian Vetta. My scholarship was partially funded by the GERAD (Groupe d'études et de recherche en analyse des décisions) at Université de Montréal.
I have defended my PhD the 9-th of December 2013 under the direction of Stéphane Bessy and Stéphan Thomassé at the Université Montpellier 2 (LIRMM). Its title was "Hitting sets, VC-dimension and Multicut". The manuscript can be found there and the slides of the defense can be found there.
I am interested in graph theory, game theory and combinatorics.
My topics of research include but are not limited to:
- Graph reconfigurations problems, especially reconfiguration of colorings and independent sets.
- Graph coloring, structural graph theory and chi-boundedness.
- Parameterized algorithms and polynomial kernels.
- Economic game theory including spectrum auctions and payoff distributions.
I am the frech PI of the PHC franco-japanese "Sakura" project DATCORE (Development of Algorithmic Techniques for COmbinatorial REconfiguration). In 2019, I co-organized (with Marthe Bonamy), the third edition of the CoRe (Combinatorial Reconfiguration) workshop in Aussois (see here for more information).
Here is a list of current and former PhD students:
- 2018-2021. Valentin Bartier, G-SCOP, Grenoble-INP (with Myriam Preissmann).
- 2017-2020. Alice Joffard, LIRIS, Université Lyon 1 (with Hamamache Kheddouci).
- 2016-2019. Marc Heinrich, LIRIS, Université Lyon 1 (with Eric Duchêne and Sylvain Gravier). Marc is now post-doc at Leeds University.
In order to access to the paper, click on the 
icon. To access to the slides of the presentations, click on the 
icon. When already available online, you can access to the paper on the editor webpage via the icon 
.
International journals
- A note on the simultaneous edge-coloring, with Bastien Durain.
To appear in Discrete Mathematics.
- Frozen (Delta+1)-colourings of bounded degree graphs, with Marthe Bonamy and Guillem Perarnau.
To appear in Combinatorics, Probability and Computing.
- A proof of the Erdos-Sands-Sauer-Woodrow conjecture, with William Lochet and Stéphan Thomassé.
Journal on Combinatorial Theory, Ser. B, vol.137 (2019), pp. 316-319.
- Exact distance coloring in trees, with Louis Esperet, Ararat Harutyunyan and Rémi de Joannis de Verclos.
Combinatorics, Probability and Computing, vol. 28(2) (2019), pp. 177-186.
- On a conjecture of Mohar concerning Kempe equivalence, with Marthe Bonamy, Carl Feghali and Matthew Johnson.
Journal on Combinatorial Theory, Series B, vol. 135 (2019) pp. 179-199.
- Multicut is FPT, with Jean Daligault and Stéphan Thomassé.
SIAM Journal on Computing, vol. 47(1) (2018) pp. 166-207.
- Recoloring graphs via tree-decompositions, with Marthe Bonamy.
European Journal on Combinatorics, vol. 69 (2018) pp. 200-213.
- Chi-bounded families of oriented graphs, with Pierre Aboulker, Jorgen Bang-Jensen, Pierre Charbit, Frédéric Havet, Frédéric Maffray and José Zamora.
Journal on Graph Theory, vol. 89(3) (2018) pp. 304-326.
- Decomposition techniques applied to the Clique-Stable set Separation problem, with Aurélie Lagoutte, Frédéric Maffray and Lucas Pastor.
Discrete Mathematics, vol. 341(5) (2018), pp. 1492-1501.
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A Vizing-like theorem for union vertex-distinguishing edge coloring, with Antoine Dailly, Eric Duchêne, Hamamache Kheddouci et Aline Parreau.
Discrete Applied Mathematics, vol. 232 (2017), pp. 88-98.
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Colourful paths for 3-chromatic graphs, with Stéphane Bessy.
Discrete Mathematics vol. 340(5) (2017) pp. 1000-1007.
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Fast recoloring of sparse graphs, with Guillem Perarnau.
European Journal of Combinatorics, vol. 52 (2016), pp. 1-11.
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The Erdos-Hajnal Conjecture for long holes and antiholes, with Marthe Bonamy and Stéphan Thomassé.
SIAM Journal on Discrete Mathematics, vol. 30(2) (2015), pp 1159-1164.
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Identifying codes in hereditary classes of graphs and VC-dimension, with Aurélie Lagoutte, Zhentao Li, Aline Parreau and Stéphan Thomassé.
SIAM Journal on Discrete Mathematics, vol. 29-4 (2015), pp. 2047-2064.
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VC-dimension and Erdös-Pósa property, with Stéphan Thomassé.
Discrete Mathematics, vol. 338-12 (2015) pp. 2302-2317.
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The Erdos-Hajnal Conjecture for Paths and Antipaths, with Aurélie Lagoutte and Stéphan Thomassé.
Journal of Comb. Theory Series B, vol. 113 (2015), pp. 261-264.
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Excluding cycles with a fixed number of chords, with Pierre Aboulker.
Discrete Applied Mathematics vol. 180 (2015) 11-24.
[Bibtex 
][Bibtex ]
@article{AboulkerBousquet2015,
title = "Excluding cycles with a fixed number of chords ",
author = "P. Aboulker and N. Bousquet",
journal = "Discrete Applied Mathematics ",
volume = "180",
number = "0",
pages = "11 - 24",
year = "2015",
doi = "http://dx.doi.org/10.1016/j.dam.2014.08.006"
}
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Clique versus independent set, with Aurélie Lagoutte and Stéphan Thomassé.
European Journal of Combinatorics 40 (2014), 73-92.
[Bibtex ][Bibtex ]
@article{BLT14,
author = {N. Bousquet and
A. Lagoutte and
S. Thomass{\'e}},
title = {Clique versus independent set},
journal = {Eur. J. Comb.},
volume = {40},
year = {2014},
pages = {73-92},
ee = {http://dx.doi.org/10.1016/j.ejc.2014.02.003},
}
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Brooks' theorem on powers of graphs, with Marthe Bonamy.
Discrete Mathematics vol. 325 (2014), 12-16.
[Bibtex ][Bibtex ]
@ARTICLE{BB14,
author = {M. Bonamy and
N. Bousquet},
title = {Brooks' theorem on powers of graphs },
journal = {Discrete Mathematics },
year = {2014},
volume = {325},
pages = {12 - 16},
doi = {http://dx.doi.org/10.1016/j.disc.2014.01.024},
issn = {0012-365X},
}
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Parameterized Domination in Circle Graphs, with Daniel Gonçalves, George Mertzios, Christophe Paul, Ignasi Sau and Stéphan Thomassé.
Theory of Computing Systems vol. 54(1):45-72, 2014.
[Bibtex ][Bibtex ]
@article{BGMPST14,
author = {N. Bousquet and
D. Gon\c{c}alves and
G. B. Mertzios and
C. Paul and
I. Sau and
S. Thomass{\'e}},
title = {Parameterized Domination in Circle Graphs},
journal = {Theory Comput. Syst.},
volume = {54},
number = {1},
year = {2014},
pages = {45-72},
}
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Scott's induced subdivision conjecture for maximal triangle-free graphs, with Stéphan Thomassé.
Combinatorics, Probability and Computing, vol. 21 (2012) 512-514.
[Bibtex ][Bibtex ]
@article{BT12,
author = {N. Bousquet and
S. Thomass{\'e}},
title = {Scott's Induced Subdivision Conjecture for Maximal Triangle-Free Graphs},
journal = {Combinatorics, Probability {\&} Computing},
volume = {21},
number = {4},
year = {2012},
pages = {512-514},
ee = {http://dx.doi.org/10.1017/S0963548312000065},
}
International Conferences
- Approximating Sorting by reversals for trees, with Alice Joffard.
To appear in SOFSEM'20.
- Linear transformations between colorings in chordal graphs, with Valentin Bartier.
To appear in ESA'19.
- When Maximum Stable Set can be solved in FPT time, with Edouard Bonnet, Stéphan Thomassé and Rémi Watrigant.
To appear in ISAAC'19.
- The Perfect Matching Reconfiguration Problem, with Marthe Bonamy, Marc Heinrich, Takehiro Ito, Yusuke Kabayahi, Arnaud Mary, Moritz Mühlenthaler and Kunihiro Wasa.
To appear in MFCS'19.
- The distance between Matchings, with Tatsuhiko Hatanaka, Takehiro Ito and Moritz Mühlenthaler.
To appear in WG'19.
- EPTAS for Max Clique on Disks and Unit Balls, with Marthe Bonamy, Édouard Bonnet, Pierre Charbit and Stéphan Thomassé.
FOCS'18, pp. 568-579.
- Reconfiguration of graphs with connectivity constraints, with Arnaud Mary.
WAOA'18, pp. 295-309.
- Parameterized Complexity of Independent Set in H-Free Graphs, with Edouard Bonnet, Pierre Charbit, Stéphan Thomassé and Rémi Watrigant.
IPEC'18, pp. 17:1-17:13.
- Distributed coloring in sparse graphs with fewer colors, with Pierre Aboulker, Marthe Bonamy and Louis Esperet.
PODC'18, pp. 419-425.
- Token Jumping in minor-closed classes, with Arnaud Mary and Aline Parreau.
FCT'17, pp. 136-149.
- Token Sliding on Chordal Graphs, with Marthe Bonamy.
WG'17, pp. 127-139.
- Computing maximum cliques in B_2-EPG graphs, with Marc Heinrich.
WG'17, pp. 140-152.
- On the economic efficiency of the combinatorial clock auction, with Yang Cai, Christof Hunkenschroder and Adrian Vetta.
SODA'16, pp. 1407-1423.
- Welfare and Rationality Guarantees for the Simultaneous Multiple-Round Auction, with Yang Cai and Adrian Vetta.
WINE'15 , pp.216-229.
- Coalition Games on Interaction Graphs: A Horticultural Perspective, with Zhentao Li and Adrian Vetta.
EC'15, pp. 95-112.
- A near-optimal mechanism for impartial selection, with Sergey Norin and Adrian Vetta.
WINE'14, pp. 133-146.
[Bibtex ][Bibtex ]
@inproceedings{BousquetNV14,
author = {N. Bousquet and
S. Norin and
A. Vetta},
title = {A Near-Optimal Mechanism for Impartial Selection},
booktitle = {Web and Internet Economics - 10th, {WINE}
2014. Proceedings},
pages = {133--146},
year = {2014},
url = {http://dx.doi.org/10.1007/978-3-319-13129-0_10},
}
- Parameterized Complexity of the Sparsest k-Subgraph Problem in Chordal Graphs, with Marin Bougeret, Rodolphe Giroudeau and Rémi Watrigant.
SOFSEM'14, Springer Lecture Notes in Computer Science 8327, pp. 150-161.
[Bibtex ][Bibtex ]
@inproceedings{BougeretBGW14,
author = {M. Bougeret and
N. Bousquet and
R. Giroudeau and
R. Watrigant},
title = {Parameterized Complexity of the Sparsest k-Subgraph Problem
in Chordal Graphs},
booktitle = {SOFSEM},
year = {2014},
pages = {150-161},
ee = {http://dx.doi.org/10.1007/978-3-319-04298-5_14},
}
- Adjacent vertex-distinguishing edge coloring of graphs, with Marthe Bonamy and Hervé Hocquard.
EuroComb'13, CRM Series Volume 16, 2013, pp 313-318 .
- Recoloring bounded treewidth graphs, with Marthe Bonamy.
LAGOS'13, Electronic Notes in Discrete Math. 44: 257-262, 2013.
[Bibtex ][Bibtex ]
@article{BB13,
author = {M. Bonamy and
N. Bousquet},
title = {Recoloring bounded treewidth graphs},
journal = {Electronic Notes in Discrete Mathematics},
volume = {44},
year = {2013},
pages = {257-262},
ee = {http://dx.doi.org/10.1016/j.endm.2013.10.040},
}
- Parameterized Domination in Circle Graphs, with Daniel Gonçalves, George Mertzios, Christophe Paul, Ignasi Sau and Stéphan Thomassé.
WG'12, volume 7551 of Lecture Notes in Computer Science (2012) 308-319.
[Bibtex ][Bibtex ]
@INPROCEEDINGS{BGMPST12,
author = {N. Bousquet and D. Gon\c{c}alves and G. Mertzios and C. Paul and
I. Sau and S. Thomass{\'e}},
title = {Parameterized Domination in Circle Graphs},
booktitle = {WG},
year = {2012},
pages = {308-319},
ee = {http://dx.doi.org/10.1007/978-3-642-34611-8_31}
}
- Multicut is FPT, with Jean Daligault, Stéphan Thomassé.
STOC'11, Proceedings of the 43rd annual ACM symposium on Theory of computing (2011), 459-468.
[Bibtex ][Bibtex ]
@INPROCEEDINGS{BDT11,
author = {N. Bousquet and J. Daligault and S. Thomass{\'e}},
title = {Multicut is {FPT}},
booktitle = {STOC},
year = {2011},
pages = {459-468},
ee = {http://doi.acm.org/10.1145/1993636.1993698}
}
- Equivalence and Inclusion Problem for Strongly Unambiguous Büchi Automata, with Christof Löding.
LATA 2010 , volume 6031 of Lecture Notes in Computer Science, (2010) 118-129.
[Bibtex ][Bibtex ]
@INPROCEEDINGS{BL10,
author = {N. Bousquet and C. L{\"o}ding},
title = {Equivalence and Inclusion Problem for Strongly Unambiguous {B\"u}chi
Automata},
booktitle = {LATA},
year = {2010},
pages = {118-129},
ee = {http://dx.doi.org/10.1007/978-3-642-13089-2_10}
}
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A Polynomial Kernel for Multicut in Trees, with Jean Daligault, Stéphan Thomassé, Anders Yeo.
STACS'09, (2009) 183-194.
[Bibtex ][Bibtex ]
@INPROCEEDINGS{BousquetDTY09,
author = {N. Bousquet and J. Daligault and S. Thomass{\'e} and A. Yeo},
title = {A Polynomial Kernel for Multicut in Trees},
booktitle = {STACS},
year = {2009},
pages = {183-194},
ee = {http://dx.doi.org/10.4230/LIPIcs.STACS.2009.1824}
}
Preprints
- Graph Isomorphism for (H1,H2)-Free Graphs: An Almost Complete Dichotomy, with Marthe Bonamy, Konrad K. Dabrowski, Matthew Johnson, Daniël Paulusma, Théo Pierron, preprint.
- A polynomial version of Cereceda's conjecture, with Marc Heinrich, submitted
- Reconfiguration of independent sets in cographs, with Marthe Bonamy, submitted.
Misc
- On the chromatic number of wheel-free graphs with no large bipartite graphs, with Stéphan Thomassé.
- Shapley value on matching games for trees.
Thesis:
- Hitting Sets: VC-dimension and Multicut.
PhD thesis.
- Vapnik-Chervonenkis Dimension.
Master Thesis.
- Le problème de l'équivalence pour les automates de Büchi fortement non ambigüs.
First year of Master thesis. (in French) (slides: french, english).
- Un noyau polynomial pour Multicut in Trees
Undergrad Thesis, in french. (slides in french).
- Optimization and Approximation (Master 1, ENS Lyon), Fall 2017-... .
- MOD4.4: Recherche opérationnelle (3rd year Ecole Centrale de Lyon, Cours TD/TP, 16h), Fall 2016-... .
- Graphs and Discrete Structure (Master ORCO, Grenoble, Cours, 9h), Fall 2018-... (Lecture Part 1, Part 2, Exercises).
- Introduction to Economic Game Theory (Doctoral course, Grenoble, 6h), Fall 2018.
- Combinatorial Optimization (Master ORCO, Grenoble, Cours, 9h), Fall 2016-2017.
- INF-TC1: Introduction to algorithms (1st year Ecole Centrale de Lyon, TD/TP, 84h), Fall 2015 and Spring 2016.
- INF-TC2: Object-oriented programming (1st year Ecole Centrale de Lyon, TD/TP, 60h), Fall 2015 and Spring 2016.
- INF-TC3: Web and Database Project (1st year Ecole Centrale de Lyon, TD/TP, 48h), Fall 2015 and Spring 2016.
- Mathematical Programming (Lectures, 42h), Fall 2014.
- Systemes (L3, TD/TP Université Montpellier II, 34h), Fall 2013.
- Introduction Systeme et Reseaux (M1, TP Université Montpellier II, 36h), Fall 2013
- Introduction à l'algorithmique et la programmation (L1 TD/TP, Université Montpellier II, 52h), Fall 2012.
- Algorithmique des graphes (L3 TP, Université Montpellier II, 12h), Fall 2012.
- Programmation en C (TP, IUT Béziers, 40h), Spring 2012.
- C2I (L1 TP, Université Montpellier II, 15h), Fall 2011.
- Initiation à la programmation (TP, IUT Montpellier, 18h), Fall 2011.
You can find the details and the slides of all my talks there. In this page, I just mention a couple of recent talks (to see the slides, click on the picture ):
- Recoloring, from statistical physics to combinatorics, One day Discrete Structure Meeting, ENS Lyon, June, 15th, 2018.
- Exact distance coloring in trees, ANR DISTANCIA, Marseille, April, 11th, 2018.
- Token Sliding on Chordal Graphs, BIRS Workshop, Banff, Canada, January 2017.
- Discrete Maths and Optimization Seminar, McGill, September, 29th, 2014, Clique, stable sets and chromatic number.
- Clermont-Ferrand, March, 28th, 2013, Hitting sets and VC-dimension.
Grants
I am, or have been PI of the following projects:
- ANR Project GrR (Graph Reconfiguration). Budget: 200k euros. Duration: 4 years (2019-2023) \\
- DATCORE (Development of Algorithmic Techniques on Combinatorial Reconfiguration). Bilateral project with Japan, under the PHC Sakura Program. Budget: 14k euros + 2M yens. Duration: 2 years (2018-2019).
The japonese PI is Takehiro Ito.
- IRS Project "RAGE" (Reconfiguration: Algorithms, Generation and Enumeration). Budget: 15k euros. Duration: 2 years (2018-2019).
- INS2I JCJC project ECSG (Combinatorial Auctions and Graph Structure). Budget: 10k euros. Duration: 1 year (2017).
You may have seen me there:
Here is a complete list of events I attended to.