Publications related to Hysteresis phenomena of a Macroscopic Fundamental Diagram in freeway networks

An automatized signal timing detection at signalized intersections with detailed vehicle trajectory data

Nikolaos Geroliminis, Emmanouil Barmpounakis, Jasso Espadaler Clapés

Signalized intersections are a fundamental part of urban networks. Their understanding is crucial to identify congestion patterns, queues, delays, and safety issues in local and network level. In this work, we analyze multimodal vehicle trajectories and pr ...

2022

Geometry of the Loss Landscape in Overparameterized Neural Networks: Symmetries and Invariances

Wulfram Gerstner, Clément Hongler, Johanni Michael Brea, Francesco Spadaro, Berfin Simsek, Arthur Jacot

We study how permutation symmetries in overparameterized multi-layer neural networks generate `symmetry-induced' critical points. Assuming a network with

L

layers of minimal widths

r_1^*, \ldots, r_{L-1}^*

reaches a zero-loss minimum at $ r_1^*! \c ...

2021

Dynamic Quantification of the Effect of Traffic Congestion on a Multilayer Network

The paper “Dynamic efficiency in multilayer transportation networks” (Bellocchi, Geroliminis, 2018) [1] introduced new performance measures to quantify dynamically the effect of traffic congestion in a multilayer network. Based on these measures, we explor ...

2020

Morphology and morphodynamics of braided rivers: an experimental investigation

Daniel Vito Papa

Braided rivers form some of the most fascinating fluvial patterns found on Earth. They are identifiable by their unique morphology of complex networks of intertwined channels that spread across wide floodplains. Detailed knowledge of their dynamics is need ...

EPFL2020

Linking trajectory data collected with a swarm of drones to the underlying urban network for macroscopic traffic parameter estimation

Nikolaos Geroliminis, Emmanouil Barmpounakis

Recently, an open-data initiative was announced with one of the most complete datasets to study urban congestion. The pNEUMA dataset consists of more than half a million trajectories in heterogeneous traffic. In order to utilize the dataset for macroscopic ...

2020

Assessing Technology Adoption in the European Air Traffic Management: The Cases of Virtual Centre and Flight-Centric Operations

Engin Zeki

This research focuses on emerging technologies in the European air traffic management (ATM), specifically investigating technology adoption by the main stakeholders. The European ATM consists of a highly fragmented aviation infrastructure, built and manage ...

EPFL2020

Percolation and Internet Science

Emanuele Massaro

Percolation, in its most general interpretation, refers to the “flow” of something (a physical agent, data or information) in a network, possibly accompanied by some nonlinear dynamical processes on the network nodes (sometimes denoted reaction–diffusion s ...

2019

Global robustness versus local vulnerabilities in complex synchronous networks

Philippe René Joseph Jacquod

In complex network-coupled dynamical systems, two questions of central importance are how to identify the most vulnerable components and how to devise a network making the overall system more robust to external perturbations. To address these two questions ...

2019

Exponential Collapse Of Social Beliefs Over Weakly-Connected Heterogeneous Networks

Ali H. Sayed, Augusto José Rabelo Almeida Santos

We consider a distributed social learning problem where a network of agents is interested in selecting one among a finite number of hypotheses. The data collected by the agents might be heterogeneous, meaning that different sub-networks might observe data ...

IEEE2019

The morning commute in urban areas with heterogeneous trip lengths

Nikolaos Geroliminis, Raphael Ali Francis Lamotte

This paper investigates the equilibrium properties of the morning commute problem at the network level with heterogeneous trip lengths. Congestion is modeled with a Macroscopic Fundamental Diagram relating the space-mean speed of a network to the vehicular ...

2018

Hysteresis phenomena of a Macroscopic Fundamental Diagram in freeway networks

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An automatized signal timing detection at signalized intersections with detailed vehicle trajectory data

Geometry of the Loss Landscape in Overparameterized Neural Networks: Symmetries and Invariances

Dynamic Quantification of the Effect of Traffic Congestion on a Multilayer Network

Morphology and morphodynamics of braided rivers: an experimental investigation

Linking trajectory data collected with a swarm of drones to the underlying urban network for macroscopic traffic parameter estimation

Assessing Technology Adoption in the European Air Traffic Management: The Cases of Virtual Centre and Flight-Centric Operations

Percolation and Internet Science

Global robustness versus local vulnerabilities in complex synchronous networks

Exponential Collapse Of Social Beliefs Over Weakly-Connected Heterogeneous Networks

The morning commute in urban areas with heterogeneous trip lengths

An automatized signal timing detection at signalized intersections with detailed vehicle trajectory data

Geometry of the Loss Landscape in Overparameterized Neural Networks: Symmetries and Invariances

Morphology and morphodynamics of braided rivers: an experimental investigation

Dynamic Quantification of the Effect of Traffic Congestion on a Multilayer Network

Linking trajectory data collected with a swarm of drones to the underlying urban network for macroscopic traffic parameter estimation

Percolation and Internet Science

Global robustness versus local vulnerabilities in complex synchronous networks

The morning commute in urban areas with heterogeneous trip lengths

Assessing Technology Adoption in the European Air Traffic Management: The Cases of Virtual Centre and Flight-Centric Operations

Exponential Collapse Of Social Beliefs Over Weakly-Connected Heterogeneous Networks