Antoine Allard

Senior research fellow | Centre de Recerca Matemàtica, Barcelona






Senior research fellow
Centre de Recerca Matemàtica
Contact info. | Curriculum vitae

About me

I am a senior research fellow at the Centre de Recerca Matemàtica in Bellaterra, Barcelona, Spain. I previously worked as a postdoctoral fellow at the Departament de Física de la Matèria Condensada of the University of Barcelona, Spain, affiliated to the Complexity Lab Barcelona and to the Universitat de Barcelona Institute of Complex Systems (UBICS). I obtained a PhD in Physics from Université Laval in Québec, Canada, in 2014 under the supervision of Louis J. Dubé.

About my research

Complex systems are composed of many elements whose interactions lead to emergent collective behaviours. These systems can be of diverse nature: biological (e.g., food webs of ecosystems, brains), technological (e.g., Internet, power grids), or social (e.g., contact/social networks). Examples of emergent properties are the robustness/stability to perturbations of ecosystems, the navigability of the Internet without an explicit knowledge of its global structure, and the susceptibility of a population in regard to large-scale epidemics of emerging infectious diseases.

Understanding the behaviour, or function, of complex systems is achieved through the study of the structure of the interactions between their constituting elements. This in turn is achieved through a network—or graph—paradigm in which the elements are represented by nodes linked together if they interact in the original system. Statistical mechanics, graph theory, geometry and non-linear dynamics then offer a well developed set of concepts and mathematical tools to study and to model the interplay between the structure and the function of complex systems.

See the publications section for further details.

News

2017.06.23 — Conference
Talk titled The effective navigable geometry of the brain at NetSci 2017. Joint work with M. Ángeles Serrano.

2017.06.20 — Conference
Satellite symposium Contagion on Networks at NetSci 2017. Organized with Benjamin M. Althouse, Laurent Hébert-Dufresne and Samuel V. Scarpino.

2017.02.03 — Media
Our publication The geometric nature of weights in real complex networks features in this week's Nature Phys. Research Highlights.

2017.01.28 — Publication
Publication of The geometric nature of weights in real complex networks in Nature Communications. In this paper, we unveil a geometric signature in the weights of real weighted complex networks and show how it can be leveraged to generate realistic network surrogates. Joint work with M. Ángeles Serrano, Guillermo García-Pérez and Marián Boguñá.

2016.11.26 — Media
Beautifully written News & Views piece by Thillo Gross about our paper The effect of a prudent adaptive behaviour on disease transmission recently published in Nature Physics.

2016.09.20 — Conference
Talk titled The geometric nature of weights in real complex networks at CCS 2016. Joint work with M. Ángeles Serrano, Guillermo García-Pérez and Marián Boguñá.

Publications

Listed in inverse chronological order; equal contributions are denoted by *.
Most of the publications below can also be found on arXiv or on Google Scholar.

— Submitted manuscripts —

Asymmetric percolation drives a double transition in sexual contact networks
AA, Benjamin M. Althouse, Samuel V. Scarpino and Laurent Hébert-Dufresne
arXiv

The risk of sustained sexual transmission of Zika is underestimated
AA*, Benjamin M. Althouse*, Laurent Hébert-Dufresne* and Samuel V. Scarpino*
bioRxiv

Strategic tradeoffs in competitor dynamics on adaptive networks
Laurent Hébert-Dufresne, AA, Pierre-André Noël, Jean-Gabriel Young and Eric Libby
arXiv

— 2017 —

The geometric nature of weights in real complex networks
AA, M. Ángeles Serrano, Guillermo García-Pérez and Marián Boguñá
Nature Communications 8, 14103 (2017)
Full text | arXiv
Nature Phys. Research Highlights
Features in Nature Communications' web collection on complex systems

— 2016 —

Growing networks of overlapping communities with internal structure
Jean-Gabriel Young, Laurent Hébert-Dufresne, AA, and Louis J. Dubé
Physical Review E 94, 022317 (2016)
Full text | arXiv | Software

Multi-scale structure and topological anomaly detection via a new network statistic: The onion decomposition
Laurent Hébert-Dufresne, Josh A. Grochow, and AA
Scientific Reports 6, 31708 (2016)
Full text | arXiv

The effect of a prudent adaptive behaviour on disease transmission
Samuel V. Scarpino, AA, Laurent Hébert-Dufresne
Nature Physics 12, 1042-1046 (2016)
Full text | arXiv | Media coverage
Nature Phys. News & Views
★ In the top 5% of all research outputs scored by Altmetric.

Constrained growth of complex scale-independent systems
Laurent Hébert-Dufresne, AA, Jean-Gabriel Young, and Louis J. Dubé
Physical Review E 93, 032304 (2016)
Full text | arXiv
★ In the Editors' Suggestions section of Physical Review E.

The hidden hyperbolic geometry of international trade: World Trade Atlas 1870-2013
Guillermo García-Pérez, Marián Boguñá, AA, and M. Ángeles Serrano
Scientific Reports 6, 33441 (2016)
Full text | arXiv
★ Featured in the section Economía of the newspaper El Periódico.

— 2015 —

Complex networks as an emerging property of hierarchical preferential attachment
Laurent Hébert-Dufresne, Edward Laurence, AA, Jean-Gabriel Young and Louis J. Dubé
Physical Review E 92, 062809 (2015)
Full text | arXiv | Software

General and exact approach to percolation on random graphs
AA, Laurent Hébert-Dufresne, Jean-Gabriel Young and Louis J. Dubé
Physical Review E 92, 062807 (2015)
Full text | arXiv

A shadowing problem in the detection of overlapping communities: lifting the resolution limit through a cascading procedure
Jean-Gabriel Young, AA, Laurent Hébert-Dufresne and Louis J. Dubé
PLOS ONE 10, e0140133 (2015)
Full text | arXiv | Software

— 2014 —

The Social Zombie: Modelling undead outbreaks on social networks
Laurent Hébert-Dufresne, Vincent Marceau, Pierre-André Noël, AA, and Louis J. Dubé
Robert Smith? (Ed.), University of Ottawa Press, ISBN 978-0776622101
Table of contents

Spreading dynamics on complex networks: a general stochastic approach
Pierre-André Noël, AA, Laurent Hébert-Dufresne, Vincent Marceau and Louis J. Dubé
Journal of Mathematical Biology 69, 1627 (2014)
Full text | arXiv

A system-level model for the microbial regulatory genome
A. N. Brooks, D. J. Reiss, AA, W.-J. Wu, D. M. Salvanha, C. L. Plaisier, S. Chandrasekaran, M. Pan, A. Kaur and N. S. Baliga
Molecular Systems Biology 10, 740 (2014)
Full text

Coexistence of phases and the observability of random graphs
AA, Laurent Hébert-Dufresne, Jean-Gabriel Young and Louis J. Dubé
Physical Review E 89, 022801 (2014)
Full text | arXiv
★ In the Editors' Suggestions section of Physical Review E.

Percolation sur graphes aléatoires: Modélisation et description analytique
(Percolation on random graphs: Modelling and analytical description)
Ph.D. Thesis, Université Laval (2014)
PDF

— 2013 —

Percolation on random networks with arbitrary k-core structure
Laurent Hébert-Dufresne*, AA*, Jean-Gabriel Young and Louis J. Dubé
Physical Review E 88, 062820 (2013)
Full text | arXiv

Global efficiency of local immunization of complex networks
Laurent Hébert-Dufresne*, AA*, Jean-Gabriel Young* and Louis J. Dubé
Scientific Reports 3, 2171 (2013)
Full text | arXiv

— 2012 —

Bond percolation on a class of correlated and clustered random graphs
AA, Laurent Hébert-Dufresne, Pierre-André Noël, Vincent Marceau and Louis J. Dubé
Journal of Physics A 45, 405005 (2012)
Full text | arXiv

Exact solution of bond percolation on small arbitrary graphs
AA, Laurent Hébert-Dufresne, Pierre-André Noël, Vincent Marceau and Louis J. Dubé
Europhysics Letters (EPL) 98, 16001 (2012)
Full text | arXiv

Propagation on networks: An exact alternative perspective
Pierre-André Noël, AA, Laurent Hébert-Dufresne, Vincent Marceau and Louis J. Dubé
Physical Review E 85, 031118 (2012)
Full text | arXiv

Structural preferential attachment: Stochastic process for the growth of scale-free, modular and self-similar systems
Laurent Hébert-Dufresne, AA, Vincent Marceau, Pierre-André Noël and Louis J. Dubé
Physical Review E 85, 026108 (2012)
Full text | arXiv | Software

— 2011 —

Structural Preferential Attachment: Network Organization beyond the Link
Laurent Hébert-Dufresne, AA, Vincent Marceau, Pierre-André Noël and Louis J. Dubé
Physical Review Letters 107, 158702 (2011)
Full text | arXiv | Software

Modeling the dynamical interaction between epidemics on overlay networks
Vincent Marceau, Pierre-André Noël, Laurent Hébert-Dufresne, AA and Louis J. Dubé
Physical Review E 84, 026105 (2011)
Full text | arXiv

— 2010 —

Propagation dynamics on networks featuring complex topologies
Laurent Hébert-Dufresne, Pierre-André Noël, Vincent Marceau, AA and Louis J. Dubé
Physical Review E 82, 036115 (2010)
Full text | arXiv
★ Also in the *Virtual Journal of Biological Physics Research*, issue 7, vol. 20 (2010)

Adaptive networks: Coevolution of disease and topology
Vincent Marceau, Pierre-André Noël, Laurent Hébert-Dufresne, AA and Louis J. Dubé
Physical Review E 82, 036116 (2010)
Full text | arXiv
★ Also in the *Virtual Journal of Biological Physics Research*, issue 7, vol. 20 (2010)

— 2009 —

Heterogeneous Bond Percolation on Multitype Networks with an Application to Epidemic Dynamics
AA, Pierre-André Noël, Louis J. Dubé and B. Pourbohloul
Physical Review E 79, 036113 (2009)
Full text | arXiv
★ Also in the *Virtual Journal of Biological Physics Research*, issue 7, vol. 17 (2009)

Des Ponts d'Euler à la Grippe Aviaire: De l'abstraction mathématique à la réalité sociale des épidémies
(From Euler Bridges to the Avian Flu: From Mathematical Abstraction to the Social Reality of Epidemics)
AA, Pierre-André Noël, and Louis J. Dubé
Accromath 4, 24-29 (2009)
Full text

— 2008 —

Modélisation Mathématique en Epidémiologie par Réseaux de Contacts: Introduction de l'Hétérogénéité dans la Transmissibilité
(Mathematical Modelling in Contact Networks for Epidemiology: Introduction of Heterogenity in Transmissibility)
M.Sc. Thesis, Université Laval (2008)
PDF

Codes

The notBGL library: A user-friendly C++ interface provinding a set of functions and objects to facilitate the use of the Boost Graph Library. Ongoing project, feel free to send me some feedback.

Some other codes are also available on Github.

Contact Information

aallard [at] crm [dot] cat
@all_are
antoineallard
Google Scholar
ORCID

Affiliations

Centre de Recerca Matemàtica (main affiliation)
Campus de Bellaterra, Edifici C
08193 Bellaterra (Barcelona), Spain

Département de physique, de génie physique et d'optique (affiliate faculty)
1045 avenue de la Médecine
Université Laval
Québec (Québec) G1V 0A6, Canada