390 citations · 2.5k across the 69 of their papers we have counts for
45 papers · 1 filter
Two-mode geometry controls multiscale organization in bipartite systems
Ottavia Falconi, Giulio Cimini, Pablo Villegas
Many complex systems are organized around complementary roles and naturally described as bipartite networks. Unveiling their multiscale structure presents a fundamental challenge b…
Modeling structure and credit risk of the economy: a multilayer bank-firm network approach
Soumen Majhi, Anna Mancini, Giulio Cimini
Assessing the resilience of the economy requires accounting for its intrinsic multi-layer nature, by assessing for instance how disruptions at the firm level spread through the pro…
Block-Fitness Modeling of the Global Air Mobility Network
Giulia Fischetti, Anna Mancini, Giulio Cimini +4
Accurate representations of the World Air Transportation Network (WAN) are fundamental inputs to models of global mobility, epidemic risk, and infrastructure planning. However, hig…
Missing links prediction: comparing machine learning with physics-rooted approaches
Francesca Santucci, Giulio Cimini, Tiziano Squartini
An active research line within the broader field of network science is the one concerning link prediction. Close in scope to network reconstruction, link prediction targets specifi…
Inferring firm-level supply chain networks with realistic systemic risk from industry sector-level data
Massimiliano Fessina, Giulio Cimini, Tiziano Squartini +3
Production networks constitute the backbone of every economic system. They are inherently fragile as several recent crises clearly highlighted. Estimating the system-wide consequen…
The rise and fall of WallStreetBets: social roles and opinion leaders across the GameStop saga
Anna Mancini, Antonio Desiderio, Giovanni Palermo +2
Nowadays human interactions largely take place on social networks, with online users' behavior often falling into a few general typologies or "social roles". Among these, opinion l…
The dynamics of the Reddit collective action leading to the GameStop short squeeze
Antonio Desiderio, Luca Maria Aiello, Giulio Cimini +1
In early 2021, the stock prices of GameStop, AMC, Nokia and BlackBerry experienced dramatic increases, triggered by short-squeeze operations that have been largely attributed to Re…
Spontaneous Opinion Swings in the Voter Model with Latency
Giovanni Palermo, Anna Mancini, Antonio Desiderio +2
The cognitive process of opinion formation is often characterized by stubbornness or resistance of agents to changes of opinion. To capture such a feature we introduce a constant l…
Pattern-detection in the global automotive industry: a manufacturer-supplier-product network analysis
Massimiliano Fessina, Andrea Zaccaria, Giulio Cimini +1
Production networks arise from supply and customer relations among firms. These systems are gaining growing attention as a consequence of disruptions due to natural or man-made dis…
Highly engaging events reveal semantic and temporal compression in online community discourse
Antonio Desiderio, Anna Mancini, Giulio Cimini +1
People nowadays express their opinions in online spaces, using different forms of interactions such as posting, sharing and discussing with one another. How do these digital traces…
Dimensional Reduction of Solvency Contagion Dynamics on Financial Networks
Gianmarco Ricciardi, Guido Montagna, Guido Caldarelli +1
Modelling systems with networks has been a powerful approach to tame the complexity of several phenomena. Unfortunately, such an approach is often made difficult by the large numbe…
Multiplex mobility network and metapopulation epidemic simulations of Italy based on Open Data
Antonio Desiderio, Giulio Cimini, Gaetano Salina
The patterns of human mobility play a key role in the spreading of infectious diseases and thus represent a key ingredient of epidemic modeling and forecasting. Unfortunately, as t…
Self-induced consensus of Reddit users to characterise the GameStop short squeeze
Anna Mancini, Antonio Desiderio, Riccardo Di Clemente +1
The short squeeze of GameStop (GME) shares in mid-January 2021 has been primarily orchestrated by retail investors of the Reddit r/wallstreetbets community. As such, it represents…
Meta-validation of bipartite network projections
Giulio Cimini, Alessandro Carra, Luca Didomenicantonio +1
Monopartite projections of bipartite networks are useful tools for modeling indirect interactions in complex systems. The standard approach to identify significant links is statist…
The Physics of Financial Networks
Marco Bardoscia, Paolo Barucca, Stefano Battiston +6
The field of Financial Networks is a paramount example of the novel applications of Statistical Physics that have made possible by the present data revolution. As the total value o…
Reconstructing networks
Giulio Cimini, Rossana Mastrandrea, Tiziano Squartini
Complex networks datasets often come with the problem of missing information: interactions data that have not been measured or discovered, may be affected by errors, or are simply…
True scale-free networks hidden by finite size effects
Matteo Serafino, Giulio Cimini, Amos Maritan +4
We analyze about two hundred naturally occurring networks with distinct dynamical origins to formally test whether the commonly assumed hypothesis of an underlying scale-free struc…
Generalized Markov stability of network communities
Aurelio Patelli, Andrea Gabrielli, Giulio Cimini
We address the problem of community detection in networks by introducing a general definition of Markov stability, based on the difference between the probability fluxes of a Marko…
Influence of technological innovations on industrial production: A motif analysis on the multilayer network
Martina Formichini, Giulio Cimini, Emanuele Pugliese +1
We study whether specific combinations of technological advancements can signal the presence of local capabilities allowing for a given industrial production. To this end, we gener…
Numerical assessment of the percolation threshold using complement networks
Giacomo Rapisardi, Guido Caldarelli, Giulio Cimini
Models of percolation processes on networks currently assume locally tree-like structures at low densities, and are derived exactly only in the thermodynamic limit. Finite size eff…
Fragility and anomalous susceptibility of weakly interacting networks
Giacomo Rapisardi, Alex Arenas, Guido Caldarelli +1
Percolation is a fundamental concept that brought new understanding on the robustness properties of complex systems. Here we consider percolation on weakly interacting networks, th…
The Statistical Physics of Real-World Networks
Giulio Cimini, Tiziano Squartini, Fabio Saracco +3
In the last 15 years, statistical physics has been a very successful framework to model complex networks. On the theoretical side, this approach has brought novel insights into a v…
Reconstruction methods for networks: the case of economic and financial systems
Tiziano Squartini, Guido Caldarelli, Giulio Cimini +2
When studying social, economic and biological systems, one has often access to only limited information about the structure of the underlying networks. An example of paramount impo…
Multiple structural transitions in interacting networks
Giacomo Rapisardi, Alex Arenas, Guido Caldarelli +1
Many real-world systems can be modeled as interconnected multilayer networks, namely a set of networks interacting with each other. Here we present a perturbative approach to study…