News archive

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

2016.01.10 — Visit at the Santa Fe Institute
I will be visiting the Santa Fe Institute from January 9th to February 27th 2017 to work with my long-term collaborator Laurent Hébert-Dufresne and also to participate to the working group Strategies in adaptive systems: From Life Cycles to Political Campaigns.
With Laurent Hébert-Dufresne, Jean-Gabriel Young and Eric Libby.

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.

2016.09.12 —Publication
Publication of Multi-scale structure and topological anomaly detection via a new network statistic: The onion decomposition in Scientific Reports.
Joint work with Laurent Hébert-Dufresne and Joshua A. Grochow.

2016.09.12 —Publication
The ultimate paper from my time in Québec, Growing networks of overlapping communities with internal structure, has been published in Physical Review E.
Joint work with Jean-Gabriel Young, Laurent Hébert-Dufresne and Louis J. Dubé.

2016.08.01 — Publication
Publication of The effect of a prudent adaptive behaviour on disease transmission has been published in Nature Physics.
Joint work with Laurent Hébert-Dufresne and Samuel V. Scarpino.

2016.06.20 — Conference
I will attend the 8th International Conference on Discrete Models of Complex Systems taking place in Aveiro, Portugal, on June 20-22 2016. On the 22, I will present the latest results regarding our project on weighted networks in hidden metric space.
Joint work with M. Ángeles Serrano, Guillermo García-Pérez and Marián Boguñá.

2016.03.03 — Publication
The penultimate paper from my time in Québec has finally seen the light and has been published in Physical Review E. Titled Constrained growth of complex scale-independent systems, this paper conjectures that the growth of systems toward scale independence involves only two coupled dynamical features. The first is the well-known preferential attachment principle, and the second is a general form of delayed temporal scaling. While the first is sufficient, the second is present in all studied data and appears to maximize the speed of convergence to true scale independence. The delay in this temporal scaling acts as a coupling between population growth and individual activity. Together, these two dynamical properties appear to pave a precise evolution path, such that even an instantaneous snapshot of a distribution is enough to reconstruct the past of the system and predict its future.
Joint work with Laurent Hébert-Dufresne, Jean-Gabriel Young and Louis J. Dubé.

2016.01.10 — Visit at the Santa Fe Institute
I will be visiting the Santa Fe Institute from January 19th to January 24th 2016 to participate to the working group Studying the Interplay of Hard Modularity and Dynamics: From Life Cycle Strategies to Political Campaigns.
With Laurent Hébert-Dufresne, Pierre-André Noël, Jean-Gabriel Young and Eric Libby.

2015.11.12 — PhD advisor honored
It is with great pride that I learned that my Ph.D. advisor, Louis J. Dubé, has been awarded the 2015 Excellence Award in Teaching, in the "Outstanding Graduate Faculty Mentor" category. This is a well-deserved award, and I am proud to be counted among his alumni. More details can be found here and a video, in French, can be found here.

2015.12.09 — Publication
Our latest work titled Complex networks as an emerging property of hierarchical preferential attachment has appeared in Physical Review E. This paper proposes hierarchical organization as a unifying principle explaining many real-world properties such as scale independence, clustering, fractality, and navigability.
Joint work with Laurent Hébert-Dufresne, Edward Laurence, Jean-Gabriel Young and Louis J. Dubé.

2015.12.07 — Publication
Our latest work titled General and exact approach to percolation on random graphs has appeared in Physical Review E. This paper proposes a comprehensive and versatile theoretical framework to study site and bond percolation on clustered and correlated random graphs. This framework encompasses most of the models published to this day and also makes it possible to model structural properties not yet included in a theoretical model. Our approach can also be adapted to model interdependent graphs in an equally general fashion.
Joint work with Laurent Hébert-Dufresne, Jean-Gabriel Young and Louis J. Dubé.

2015.10.14 — Publication
Our latest work on community detection titled A shadowing problem in the detection of overlapping communities: lifting the resolution limit through a cascading procedure has appeared in PLOS ONE. This paper shows that under some quite ubiquitous conditions, many detection algorithms fail to identify overlapping communities across multiple scales, leaving a significant fraction of the network uncharted. A meta-algorithm consisting in successive applications of the original detection algorithm is then shown to circumvent this resolution limit. The associated software is freely available on github.
Joint work with Jean-Gabriel Young, Laurent Hébert-Dufresne and Louis J. Dubé.

2015.05.07 — Conference
I will be attending the 2015 edition of NetSci, in Zaragoza, Spain, where I will present our latest work on weighted networks in hidden metric spaces during the Toponets'15 satellite on June 2nd 2015.
Joint work with M. Ángeles Serrano, Guillermo García-Pérez and Marián Boguñá.

2015.03.13 — Visit at the Santa Fe Institute
I will be visiting my good friend Laurent Hébert-Dufresne at the Santa Fe Institute from March 19th to April 3rd 2015. Working with Laurent has always been very fruitful and productive, and this visit aims at consolidate our collaboration now that we both work on different continents. Following the common practice at SFI, I will give a seminar on March 23rd entitled Exploring the Hidden Metric Space of Complex Networks in which I will give an overview of the principal models and results related to the mathematical modelling of complex networks embedded in a metric space.

2014.09.11 — Mathematical modelling of zombies
A few years ago, my former colleagues and I contributed a chapter to the book Mathematical Modelling of Zombies edited by Robert Smith? (the question mark is not a typo) from the University of Ottawa, Canada. Using the humorous pretext of an imminent zombies invasion, this books aims to initiate health care researchers to mathematical modelling. Besides introducing the reader to graph theory, numerical simulations and numerical integration, we present in our chapter an enhanced version of a model of adaptive networks in which we allow susceptible individuals to attack and kill infected individuals (zombies). This chapter has mainly been written during the summer of 2010 and has spent the following years in limbo in the editorial world, but only to come back from the dead in time for Halloween.
Joint work with Laurent Hébert-Dufresne, Vincent Marceau, Pierre-André Noël and Louis J. Dubé.

2014.07.15 — Publication
Aaron Brooks from the Institute for Systems Biology and his collaborators have just published a paper in Molecular Systems Biology. This paper presents the results of a project that was mostly initiated during a conversation between Aaron and I while attending the Sante Fe Institute's Complex Systems Summer School in 2011. While my contribution to this beautiful work is quite modest, it is a great example of interdisciplinary collaboration and of how theoretical work in Network Science can find applications in various unexpected scientific disciplines.