Guillaume Ducoffe

Publications

Article dans une revue (42)

Fast deterministic algorithms for computing all eccentricities in (hyperbolic) Helly graphs Feodor F Dragan,Guillaume Ducoffe,Heather M Guarnera Journal of Computer and System Sciences, 2025, 149, pp.103606. ⟨10.1016/j.jcss.2024.103606⟩ Article dans une revue hal-04812612v1
Balancing graph Voronoi diagrams with one more vertex Guillaume Ducoffe Networks, 2024, 83 (2), pp.368-389. ⟨10.1002/net.22198⟩ Article dans une revue hal-04445634v1
$$\alpha _i$$-Metric Graphs: Radius, Diameter and all Eccentricities Feodor F Dragan,Guillaume Ducoffe Algorithmica, In press, ⟨10.1007/s00453-024-01223-6⟩ Article dans une revue hal-04520525v1
Subquadratic-time Algorithm for the Diameter and all Eccentricities on Median Graphs Pierre Bergé,Guillaume Ducoffe,Michel Habib Theory of Computing Systems, 2024, 68 (1), pp.144-193. ⟨10.1007/s00224-023-10153-9⟩ Article dans une revue hal-04452245v1
Corrigendum: The diameter of AT‐free graphs Guillaume Ducoffe Journal of Graph Theory, In press, ⟨10.1002/jgt.23170⟩ Article dans une revue hal-04693583v1
Graph based analysis of the Bucharest transport network Guillaume Ducoffe Romanian Journal of Information Technology and Automatic Control, 2024, 34 (1), pp.59-68. ⟨10.33436/v34i1y202406⟩ Article dans une revue hal-04541711v1
Leanness Computation: Small Values and Special Graph Classes David Coudert,Samuel Coulomb,Guillaume Ducoffe Discrete Mathematics and Theoretical Computer Science, 2024, 26 (2), pp.22. ⟨10.46298/dmtcs.12544⟩ Article dans une revue hal-04281128v3
Distance problems within Helly graphs and k-Helly graphs Guillaume Ducoffe Theoretical Computer Science, 2023, 946, pp.113690. ⟨10.1016/j.tcs.2023.113690⟩ Article dans une revue hal-03942267v1
Treelength of series–parallel graphs Thomas Dissaux,Guillaume Ducoffe,Nicolas Nisse,Simon Nivelle Discrete Applied Mathematics, 2023, 341, pp.16-30. ⟨10.1016/j.dam.2023.07.022⟩ Article dans une revue hal-04268050v1
A variation of Boolean distance Guillaume Ducoffe Bulletin mathématique de la Société des Sciences mathématiques de Roumanie, 2022, 65(113) (4), pp.405-419 Article dans une revue hal-03876902v1
The power of interval models for computing graph centralities Guillaume Ducoffe Romanian Journal of Information Technology and Automatic Control, 2022, 32 (4), pp.33-44. ⟨10.33436/v32i4y202203⟩ Article dans une revue hal-03906922v1
Optimal Centrality Computations Within Bounded Clique-Width Graphs Guillaume Ducoffe Algorithmica, In press, ⟨10.1007/s00453-022-01015-w⟩ Article dans une revue hal-03746312v1
Maximum Matching in Almost Linear Time on Graphs of Bounded Clique-Width Guillaume Ducoffe Algorithmica, In press, ⟨10.1007/s00453-022-00999-9⟩ Article dans une revue hal-03712098v1
Eccentricity queries and beyond using hub labels Guillaume Ducoffe Theoretical Computer Science, 2022, ⟨10.1016/j.tcs.2022.07.017⟩ Article dans une revue hal-03738888v1
The diameter of AT-free graphs Guillaume Ducoffe Journal of Graph Theory, 2022, 99 (4), pp.594-614. ⟨10.1002/jgt.22754⟩ Article dans une revue hal-03370937v1
Diameter, eccentricities and distance oracle computations on H-minor free graphs and graphs of bounded (distance) VC-dimension Guillaume Ducoffe,Michel Habib,Laurent Viennot SIAM Journal on Computing, 2022, 51 (5), pp.1506-1534. ⟨10.1137/20M136551X⟩ Article dans une revue hal-03841015v1
Non-existence of stable social groups in information-driven networks Augustin Chaintreau,Dorian Mazauric,Guillaume Ducoffe Theory of Computing Systems, In press, 66, pp.758-777. ⟨10.1007/s00224-022-10089-6⟩ Article dans une revue hal-03696264v1
A story of diameter, radius and (almost) Helly property Guillaume Ducoffe,Feodor F Dragan Networks, 2021, 77 (3), pp.435-453 Article dans une revue hal-02969188v1
Fast Diameter Computation within Split Graphs Guillaume Ducoffe,Michel Habib,Laurent Viennot Discrete Mathematics and Theoretical Computer Science, 2021, ⟨10.46298/dmtcs.6422⟩ Article dans une revue hal-02307397v4
Faster Approximation Algorithms for Computing Shortest Cycles on Weighted Graphs Guillaume Ducoffe SIAM Journal on Discrete Mathematics, 2021, 35 (2), pp.953-969. ⟨10.1137/20M1330415⟩ Article dans une revue hal-03225724v1
Fast Approximation and Exact Computation of Negative Curvature Parameters of Graphs Jérémie Chalopin,Victor Chepoi,Feodor F. Dragan,Guillaume Ducoffe,Abdulhakeem Mohammedet al. Discrete and Computational Geometry, 2021, 65 (3), pp.856-892. ⟨10.1007/s00454-019-00107-9⟩ Article dans une revue hal-02149991v1
The use of a pruned modular decomposition for Maximum Matching algorithms on some graph classes Guillaume Ducoffe,Alexandru Popa Discrete Applied Mathematics, 2021, 291, pp.201-222. ⟨10.1016/j.dam.2020.12.018⟩ Article dans une revue hal-03095562v1
The b-Matching problem in distance-hereditary graphs and beyond Guillaume Ducoffe,Alexandru Popa Discrete Applied Mathematics, 2021, 305, pp.233-246. ⟨10.1016/j.dam.2021.09.012⟩ Article dans une revue hal-03359175v1
On the Complexity of Computing Treebreadth Guillaume Ducoffe,Sylvain Legay,Nicolas Nisse Algorithmica, 2020, 82 (6), pp.1574-1600. ⟨10.1007/s00453-019-00657-7⟩ Article dans une revue hal-02528905v1
On the (di)graphs with (directed) proper connection number two Guillaume Ducoffe,Ruxandra Marinescu-Ghemeci,Alexandru Popa Discrete Applied Mathematics, 2020, 281, pp.203-215. ⟨10.1016/j.dam.2019.06.024⟩ Article dans une revue hal-02179551v1
P-FPT algorithms for bounded clique-width graphs David Coudert,Guillaume Ducoffe,Alexandru Popa ACM Transactions on Algorithms, 2019, 15 (3), pp.1-57. ⟨10.1145/3310228⟩ Article dans une revue hal-02152971v1
Finding cut-vertices in the square roots of a graph Guillaume Ducoffe Discrete Applied Mathematics, 2019, 257, pp.158-174 Article dans une revue hal-01948839v1
Low Time Complexity Algorithms for Path Computation in Cayley Graphs Daniela Aguirre-Guerrero,Guillaume Ducoffe,Lluis Fabrega,Pere Vila,David Coudert Discrete Applied Mathematics, 2019, 259, pp.218-225. ⟨10.1016/j.dam.2018.12.005⟩ Article dans une revue hal-01973608v1
Equivalence between pathbreadth and strong pathbreadth Guillaume Ducoffe,Arne Leitert Discrete Applied Mathematics, 2019, 262, pp.185-188. ⟨10.1016/j.dam.2019.02.009⟩ Article dans une revue hal-02055113v1
Easy computation of eccentricity approximating trees Guillaume Ducoffe Discrete Applied Mathematics, 2019, 260, pp.267-271 Article dans une revue hal-02011252v1
How long does it take for all users in a social network to choose their communities? Jean-Claude Bermond,Augustin Chaintreau,Guillaume Ducoffe,Dorian Mazauric Discrete Applied Mathematics, 2019, 270, pp.37-57. ⟨10.1016/j.dam.2019.07.023⟩ Article dans une revue hal-02264327v1
Revisiting Decomposition by Clique Separators David Coudert,Guillaume Ducoffe SIAM Journal on Discrete Mathematics, 2018, 32 (1), pp.682 - 694. ⟨10.1137/16M1059837⟩ Article dans une revue hal-01753324v1
A short note on the complexity of computing strong pathbreadth Guillaume Ducoffe Information Processing Letters, 2018, 133, pp.56-58. ⟨10.1016/j.ipl.2018.01.005⟩ Article dans une revue hal-01735826v1
On interval number in cycle convexity Julio Araujo,Guillaume Ducoffe,Nicolas Nisse,Karol Suchan Discrete Mathematics and Theoretical Computer Science, 2018, Vol. 20 no. 1 (1), pp.1-28. ⟨10.23638/DMTCS-20-1-13⟩ Article dans une revue hal-01394201v4
On distance-preserving elimination orderings in graphs: Complexity and algorithms David Coudert,Guillaume Ducoffe,Nicolas Nisse,Mauricio Soto Discrete Applied Mathematics, 2018, 243, pp.140-153. ⟨10.1016/j.dam.2018.02.007⟩ Article dans une revue hal-01741277v1
Applying clique-decomposition for computing Gromov hyperbolicity Nathann Cohen,David Coudert,Guillaume Ducoffe,Aurélien Lancin Theoretical Computer Science, 2017, 690, pp.114-139. ⟨10.1016/j.tcs.2017.06.001⟩ Article dans une revue hal-01540756v1
Data center interconnection networks are not hyperbolic David Coudert,Guillaume Ducoffe Theoretical Computer Science, 2016, 639, pp.72-90. ⟨10.1016/j.tcs.2016.05.025⟩ Article dans une revue hal-01323301v1
To Approximate Treewidth, Use Treelength! David Coudert,Guillaume Ducoffe,Nicolas Nisse SIAM Journal on Discrete Mathematics, 2016, 30 (3), pp.13. ⟨10.1137/15M1034039⟩ Article dans une revue hal-01348965v1
On the hyperbolicity of bipartite graphs and intersection graphs David Coudert,Guillaume Ducoffe Discrete Applied Mathematics, 2016, 214, pp.187-195. ⟨10.1016/j.dam.2016.06.017⟩ Article dans une revue hal-01220132v2
Eulerian and Hamiltonian dicycles in directed hypergraphs Julio Araujo,Jean-Claude Bermond,Guillaume Ducoffe Discrete Mathematics, Algorithms and Applications, 2014, 06, pp.1450012. ⟨10.1142/S1793830914500128⟩ Article dans une revue hal-01104634v2
Recognition of C4-free and 1/2-hyperbolic graphs David Coudert,Guillaume Ducoffe SIAM Journal on Discrete Mathematics, 2014, 28 (3), pp.1601-1617. ⟨10.1137/140954787⟩ Article dans une revue hal-01070768v1
Hamiltonicity of large generalized de Bruijn cycles Guillaume Ducoffe Discrete Applied Mathematics, 2013, 161, pp.2200 - 2204. ⟨10.1016/j.dam.2013.02.027⟩ Article dans une revue hal-01103786v1

Communication dans un congrès (35)

Certificates in P and Subquadratic-Time Computation of Radius, Diameter, and all Eccentricities in Graphs Feodor F. Dragan,Guillaume Ducoffe,Michel Habib,Laurent Viennot Proceedings of the 2025 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), Jan 2025, New Orleans (LA), United States. pp.2157--2193, ⟨10.1137/1.9781611978322.70⟩ Communication dans un congrès hal-01729748v6
Quasilinear-time eccentricities computation, and more, on median graphs Pierre Bergé,Guillaume Ducoffe,Michel Habib SODA 2025, Jan 2025, Nouvelle Orléans (USA), United States Communication dans un congrès hal-04732470v1
Practical Computation of Graph VC-Dimension David Coudert,Mónika Csikós,Guillaume Ducoffe,Laurent Viennot SEA 2024 - Symposium on Experimental Algorithms, Jul 2024, Vienne, Austria. pp.20, ⟨10.4230/LIPIcs.SEA.2024.8⟩ Communication dans un congrès hal-04553784v1
αi-Metric Graphs: Radius, Diameter and all Eccentricities Feodor F Dragan,Guillaume Ducoffe Graph-Theoretic Concepts in Computer Science (WG 2023), Jun 2023, Fribourg (CH), Switzerland. pp.276-290, ⟨10.1007/978-3-031-43380-1_20⟩ Communication dans un congrès hal-04267646v1
Subquadratic-Time Algorithm for the Diameter and All Eccentricities on Median Graphs Pierre Bergé,Guillaume Ducoffe,Michel Habib 39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022), Mar 2022, Marseille, France. ⟨10.4230/LIPIcs.STACS.2022.9⟩ Communication dans un congrès hal-03603802v1
Obstructions to faster diameter computation: Asteroidal sets Guillaume Ducoffe 17th International Symposium on Parameterized and Exact Computation (IPEC 2022), Sep 2022, Postdam, Germany. ⟨10.4230/LIPIcs.IPEC.2022.15⟩ Communication dans un congrès hal-03906291v1
Optimal centrality computations within bounded clique-width graphs Guillaume Ducoffe 16th International Symposium on Parameterized and Exact Computation (IPEC 2021), Sep 2021, Lisbon (virtual event), Portugal. ⟨10.4230/LIPIcs.IPEC.2021.16⟩ Communication dans un congrès hal-03445484v1
Treelength of Series-parallel graphs Thomas Dissaux,Guillaume Ducoffe,Nicolas Nisse,Simon Nivelle LAGOS 2021 - XI Latin and American Algorithms, Graphs and Optimization Symposium, May 2021, São Paulo / Virtual, Brazil. ⟨10.1016/j.procs.2021.11.008⟩ Communication dans un congrès hal-03175837v1
Isometric embeddings in trees and their use in distance problems Guillaume Ducoffe 46th International Symposium on Mathematical Foundations of Computer Science (MFCS 2021), Aug 2021, Tallinn, Estonia. ⟨10.4230/LIPIcs.MFCS.2021.43⟩ Communication dans un congrès hal-03323472v1
Fast deterministic algorithms for computing all eccentricities in (hyperbolic) Helly graphs Feodor F Dragan,Guillaume Ducoffe,Heather M Guarnera Algorithms and Data Structures 17th International Symposium (WADS 2021), Aug 2021, Halifax, Nova Scotia (Virtual Event), Canada. pp.300-314, ⟨10.1007/978-3-030-83508-8_22⟩ Communication dans un congrès hal-03315928v1
Maximum Matching in almost linear time on graphs of bounded clique-width Guillaume Ducoffe 16th International Symposium on Parameterized and Exact Computation (IPEC 2021), Sep 2021, Lisbon (virtual event), Portugal. ⟨10.4230/LIPIcs.IPEC.2021.15⟩ Communication dans un congrès hal-03445479v1
On computing the average distance for some chordal-like graphs Guillaume Ducoffe 46th International Symposium on Mathematical Foundations of Computer Science (MFCS 2021), Aug 2021, Tallinn, Estonia. ⟨10.4230/LIPIcs.MFCS.2021.44⟩ Communication dans un congrès hal-03323471v1
Beyond Helly graphs: the diameter problem on absolute retracts Guillaume Ducoffe 47th International Workshop on Graph-Theoretic Concepts in Computer Science (WG 2021), Jun 2021, Warsaw (online), Poland. pp.321-335, ⟨10.1007/978-3-030-86838-3_25⟩ Communication dans un congrès hal-03350582v1
Diameter computation on H-minor free graphs and graphs of bounded (distance) VC-dimension Guillaume Ducoffe,Michel Habib,Laurent Viennot SODA 2020 - ACM-SIAM Symposium on Discrete Algorithms, Jan 2020, Salt Lake City, United States Communication dans un congrès hal-02340382v1
The 4-Steiner Root Problem Guillaume Ducoffe 45th International Workshop on Graph-Theoretic Concepts in Computer Science (WG 2019), Jun 2019, Vall de Nuria, Spain. pp.14-26, ⟨10.1007/978-3-030-30786-8_2⟩ Communication dans un congrès hal-02290671v1
A new application of Orthogonal Range Searching for computing Giant Graph Diameters Guillaume Ducoffe 2nd Symposium on Simplicity in Algorithms (SOSA 2019), Jan 2019, San Diego, CA, United States. pp.12:1-12:7, ⟨10.4230/OASIcs.SOSA.2019.12⟩ Communication dans un congrès hal-01974190v1
Faster approximation algorithms for computing shortest cycles on weighted graphs Guillaume Ducoffe 46th International Colloquium on Automata, Languages, and Programming (ICALP 2019), Jul 2019, Patras, Greece. ⟨10.4230/LIPIcs.ICALP.2019.44⟩ Communication dans un congrès hal-02173350v1
Fast Diameter Computation within Split Graphs Guillaume Ducoffe,Michel Habib,Laurent Viennot COCOA 2019 - 13th Annual International Conference on Combinatorial Optimization and Applications, Dec 2019, Xiamen, China Communication dans un congrès hal-03373614v1
Fast Approximation and Exact Computation of Negative Curvature Parameters of Graphs Jérémie Chalopin,Victor Chepoi,Feodor F. Dragan,Guillaume Ducoffe,Abdulhakeem Mohammedet al. 34th International Symposium on Computational Geometry (SoCG 2018), Jun 2018, Budapest, Hungary. pp.22, ⟨10.4230/LIPIcs.SoCG.2018.22⟩ Communication dans un congrès hal-01836063v1
The use of a pruned modular decomposition for Maximum Matching algorithms on some graph classes Guillaume Ducoffe,Alexandru Popa 29th International Symposium on Algorithms and Computation (ISAAC 2018), Dec 2018, Jiaoxi, Yilan County, Taiwan. ⟨10.4230/LIPIcs.ISAAC.2018.144⟩ Communication dans un congrès hal-01955985v1
Extremal Graphs with respect to the Modified First Zagreb Connection Index Guillaume Ducoffe,Ruxandra Marinescu-Ghemeci,Camelia Obreja,Alexandru Popa,Rozica Maria Tache 20th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing (SYNASC), Sep 2018, Timisoara, Romania. ⟨10.1109/SYNASC.2018.00033⟩ Communication dans un congrès hal-02011274v1
The b-Matching problem in distance-hereditary graphs and beyond Guillaume Ducoffe,Alexandru Popa 29th International Symposium on Algorithms and Computation (ISAAC 2018), Dec 2018, Jiaoxi, Yilan County, Taiwan. pp.1 - 122, ⟨10.4230/LIPIcs.ISAAC.2018.122⟩ Communication dans un congrès hal-01955994v1
Fully polynomial FPT algorithms for some classes of bounded clique-width graphs David Coudert,Guillaume Ducoffe,Alexandru Popa ACM-SIAM Symposium on Discrete Algorithms, Jan 2018, New Orleans, United States. pp.20, ⟨10.1137/1.9781611975031.176⟩ Communication dans un congrès hal-01676187v1
How long does it take for all users in a social network to choose their communities? Jean-Claude Bermond,Augustin Chaintreau,Guillaume Ducoffe,Dorian Mazauric FUN 2018 - 9th International Conference on Fun with Algorithms, 2018, La Maddalena, Italy Communication dans un congrès hal-01780627v1
Extremal Graphs with respect to the Modified First Zagreb Connection Index Guillaume Ducoffe,Ruxandra Marinescu-Ghemeci,Camelia Obreja,Alexandru Popa,Rozica Maria Tache Cologne-Twente Workshop on Graphs and Combinatorial Optimization (CTW), Jun 2018, Paris, France Communication dans un congrès hal-02011265v1
Finding cut-vertices in the square roots of a graph Guillaume Ducoffe 43rd International Workshop on Graph-Theoretic Concepts in Computer Science (WG 2017), Jun 2017, Eindhoven, Netherlands. pp.234--248, ⟨10.1007/978-3-319-68705-6_18⟩ Communication dans un congrès hal-01627959v1
A simple approach for lower-bounding the distortion in any Hyperbolic embedding David Coudert,Guillaume Ducoffe EUROCOMB'17 -- The European Conference on Combinatorics, Graph Theory and Applications, Aug 2017, Vienna, Austria. pp.293 - 299, ⟨10.1016/j.endm.2017.06.051⟩ Communication dans un congrès hal-01573042v1
On the (di)graphs with (directed) proper connection number two Guillaume Ducoffe,Ruxandra Marinescu-Ghemeci,Alexandru Popa IX Latin and American Algorithms, Graphs and Optimization Symposium (LAGOS), Sep 2017, Marseille, France. pp.237 - 242, ⟨10.1016/j.endm.2017.10.041⟩ Communication dans un congrès hal-01625042v1
On the Complexity of Computing Treebreadth Guillaume Ducoffe,Sylvain Legay,Nicolas Nisse 27th International Workshop on Combinatorial Algorithms, IWOCA 2016, Aug 2016, Helsinki, Finland. pp.3-15, ⟨10.1007/978-3-319-44543-4_1⟩ Communication dans un congrès hal-01354996v1
Liens entre symétries et étirements de routages dans les réseaux d'interconnexions de centres de données David Coudert,Guillaume Ducoffe ALGOTEL 2016 - 18èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications, May 2016, Bayonne, France Communication dans un congrès hal-01302470v1
The Parallel Complexity of Coloring Games Guillaume Ducoffe 9th International Symposium, SAGT 2016, Sep 2016, Liverpool, United Kingdom. pp.27-39, ⟨10.1007/978-3-662-53354-3_3⟩ Communication dans un congrès hal-01361056v1
Vers une plus grande transparence du Web Augustin Chaintreau,Guillaume Ducoffe,Roxana Geambasu,Mathias Lécuyer ALGOTEL 2015 — 17èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications, Jun 2015, Beaune, France Communication dans un congrès hal-01144787v1
Structure vs métrique dans les graphes David Coudert,Guillaume Ducoffe,Nicolas Nisse ALGOTEL 2015 — 17èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications, Jun 2015, Beaune, France Communication dans un congrès hal-01144694v1
XRay: Enhancing the Web's Transparency with Differential Correlation Mathias Lecuyer,Guillaume Ducoffe,Francis Lan,Andrei Papancea,Theofilos Petsioset al. USENIX Security Symposium, Aug 2014, San Diego, United States Communication dans un congrès hal-01100757v1
De la difficulté de garder ses amis (quand on a des ennemis) ! Guillaume Ducoffe,Dorian Mazauric,Augustin Chaintreau 15èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications (AlgoTel), May 2013, Pornic, France. pp.1-4 Communication dans un congrès hal-00815680v1

Poster de conférence (1)

Web Transparency for Complex Targeting: Algorithms, Limits, and Tradeoffs Guillaume Ducoffe,Mathias Lécuyer,Augustin Chaintreau,Roxana Geambasu SIGMETRICS '15 Proceedings of the 2015 ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems, Jun 2015, Portland, Oregon, United States. , ⟨10.1145/2745844.2745896⟩ Poster de conférence hal-01163552v1

HDR (1)

Contributions to Path Problems in Graphs Guillaume Ducoffe Data Structures and Algorithms [cs.DS]. University of Bucharest, Faculty of Mathematics and Computer Science, 2025 HDR tel-05090989v1