6.1.1 GTL

• Name:
  Grenoble Traffic Lab
• Keywords:
  Road traffic, Traffic data
• Functional Description:
  The Grenoble Traffic Lab (GTL) initiative, led by the NeCS team, is a real-time traffic data Center (platform) that collects traffic road infrastructure information in real-time with minimum latency and fast sampling periods. The main elements of the GTL are: a real-time data-base, a show room, and a calibrated micro-simulator of the Grenoble South Ring. Sensed information comes from a dense wireless sensor network deployed on Grenoble South Ring, providing macroscopic traffic signals such as flows, velocities, densities, and magnetic signatures. This sensor network was set in place in collaboration with Inria spin-off Karrus-ITS, local traffic authorities (DIR-CE, CG38, La Metro), and specialized traffic research centers. In addition to real data, the project also uses simulated data, in order to validate models and to test the ramp-metering, the micro-simulator is a commercial software (developed by TSS AIMSUN ©). More details at http://necs.inrialpes.fr/pages/grenoble-traffic-lab.php
• URL:
  http://­necs.­inrialpes.­fr/­pages/­grenoble-traffic-lab.­php
• Contact:
  Carlos Canudas-de-Wit
• Participants:
  Alain Kibangou, Andres Alberto Ladino Lopez, Anton Andreev, Carlos Canudas-de-Wit, Dominik Pisarski, Enrico Lovisari, Fabio Morbidi, Federica Garin, Hassen Fourati, Iker Bellicot, Maria Laura Delle Monache, Paolo Frasca, Pascal Bellemain, Pietro Grandinetti, Remi Piotaix, Rohit Singhal, Vadim Bertrand

6.1.2 GTL-Ville

• Name:
  Grenoble Traffic Lab - City
• Keyword:
  Traffic data
• Functional Description:
  The GTL-Ville platform is developed within the framework of the ERC Scale-FreeBack project (http://scale-freeback.eu/). Its functions are divided into three axes: 1- Collect traffic data in real time via different sources. We are currently working with three suppliers: TomTom (company) for speed data from Floating Car Data (FCD), La Métro for counting data from existing loops and Karrus (company) to complete the counting data from La Métro via radars deployed since last fall. 2- Estimate traffic indicators with the lowest possible latency using collected data and historical data applied to models developed by PhD students of the ERC project. 3- Visualize raw data and calculated indicators via a web interface (http://gtlville.inrialpes.fr/).
• URL:
  http://­gtlville.­inrialpes.­fr
• Contact:
  Carlos Canudas-de-Wit

6.1.3 GTL-Covid

• Name:
  GTL Covid Simulation
• Keywords:
  Road traffic, Epidemiology
• Functional Description:
  This project, initiated by the DANCE team with support from Scale-freeBack ERC and the Healthy Mobility Inria project, is a demonstrator of epidemics mitigation through efficient mobility control. First, mobility in the Grenoble urban area is captured through origin destination matrices calibrated thanks to household travel surveys and INSEE data. The mobility is modeled from origins (residences) to destinations (activity-oriented) such as workplaces, schools, hospitals, parks, stores, malls,. . . . This mobility model is coupled with a SIR model. Based on this complex model, an optimization engine allows evaluating various scenarios of mobility restrictions.
• URL:
  http://­gtlville.­inrialpes.­fr/­covid-19
• Contact:
  Carlos Canudas-de-Wit

Open Multi-Agent Systems

Open Multi-Agent Systems, also known as Open Networks or Dynamics Networks, are networks whose nodes can exit or enter the network at any time, as opposed to closed networks whose node set is fixed. In practice, this is a relevant question because large networks and populations often evolve with time. Mathematically, the evolution of the node set makes the utilisation of control-theoretic notions, such as stability, delicate. Results have been obtained by two approaches. First, we have studied the stability of consensus in an open system under the assumption of having a finite “universe” set of possible nodes, from which the actual nodes of the network are chosen 26. Second, we have have studied the stability of contractive dynamics in the presence of joining/leaving nodes, essentially by understanding the process of node arrival/departure as a disturbance 10. Additionally, we have studied multi-agent optimization problems in the presence of replacements of the agents: some preliminary convergence results have been presented in 33. Future work on OMAS will resort to the approximation methods that are described in Axis 2.

Cyber-Physical Systems: a control-theoretic approach to privacy and security

Cyber-physical systems are composed of many simple components (agents) with interconnections giving rise to a global complex behaviour. One line of research on security of cyber-physical systems models an attack as an unknown input being maliciously injected in the system. We study linear network systems, and we aim at characterizing input and state observability (ISO), namely the conditions under which both the whole network state and the unknown input can be reconstructed from some measured local states. We complement the classical algebraic characterizations with novel structural results, which depend only on the graph of interactions (equivalently, on the zero pattern of the system matrices). More precisely, we consider a structured system, namely a family of linear systems, where the graph of interactions is fixed while the intensities of interactions (edge weights) are free parameters. We obtain two kinds of results: structural results, true for almost all interaction weights, and strongly structural results, true for all non-zero interaction weights. Our recent results deal with strongly structural ISO for time-invariant systems 11. We provide first a graphical characterization for s-structural unconstrained ISO, where the input reconstruction might happen with some unspecified delay. Then, we provide sufficient conditions and necessary conditions for s-structural ISO, where we ensure that the input at time (k-1) can be reconstructed at time k. The conditions presented are in terms of existence of suitable uniquely restricted matchings in bipartite graphs associated with the structured system. In order to test these conditions, we present polynomial-time algorithms. We also discuss an equivalent reformulation of the main conditions in terms of coloring algorithms as in the literature of zero forcing sets.

Node aggregation and scale-free methods

The task of controlling large-scale networks is very difficult in the first place because of its large dimensionality, making the computation of traditional control algorithms too expensive. In systems of large dimensions, the number of sensors is often much lower than the number of states, which makes it hard to identify the mathematical model of the system and to estimate its state. Similar issues arise regarding the number of actuators. Another difficulty is that the energy needed to control all nodes of the network can grow exponentially with the number of nodes, at least for some network structures 74. Therefore, in some cases, it can be preferable to control and estimate some aggregated measure of the entire network rather than all individual states, since the energy required to control aggregated quantities instead of all network states is much less. Examples of aggregate quantities would be, for instance, the average state of the whole network and its variance, or the average values in different regions of the network.

Therefore, the scale-free approach that is developed in the ERC Scale-FreeBack project is based on the aggregation of the variables that belong to neighboring nodes. The aggregation is done in such a way to construct a scale-free network, where the goal is to control the averaged state and the variance of the hubs, corresponding to regions or groups of nodes, and the control is applied to the boundaries of the hubs. In scale-free dynamic network modelling & analysis, the purpose is to reduce the system network complexity by finding the appropriate level of scale aggregation, while imposing the control and observation model properties required. For instance, the problem of robust state reconstruction is considered in  21 and the state reconstruction problem is applied to vehicular traffic density in urban transportation networks 22. The ultimate goal has consisted in developing novel control methods for scale-free network systems 20. The team has applied these novel tools to traffic networks, namely in the GTL Ville experimental platform.

The continuation method

When considering limit models for large networks, we naturally fall into continuous limits. These limits can take different forms. One way to define continuous limits is to regard, instead of the agent states, their distribution. The evolution of the distribution would then be naturally described by a partial differential (PDE) or integro-differential equation. A good approximation implies that control actions can be designed on the continuous system and have guaranteed performance on the original (graph-based) one. By the thesis work of D. Nikitin and a series of papers, we have reached a twofold objective: (1) we have developed a sound and complete theoretical framework for the PDE approximation of large networked ODE systems 19; and (2) we have applied this framework to multiple applications including swarms of autonomous robots 19, traffic networks 59, laser arrays 36, spin-torque oscillators 56.

Graphons

Another promising way to define continuous limits is by the concept of graph function, or graphon, which is the limit object of a sequence of dense networks 71, 63, 64. Conversely, finite graphs can be generated by sampling from the continuous graphon: in this case, the properties of the finite networks can be inferred from the properties of the graphon. Recent works related to the application of graphons include the study of dynamics over networks 69, 70, centrality measures 61, link prediction 79, large population games 73, 65. Inspired by very recent results on centrality measures  61, we have been able to use graphons to define performance metrics that quantify system-theoretic properties like stability, controllability, or sensitivity to noise  78. These metrics can be computed from the graphon at low computational cost and approximate well the system-theoretic properties of the corresponding dynamics on graphs of large-but-finite size 27.

Network-level traffic estimation, prediction and control

Methods for traffic estimation, prediction and control have been widely studied for highway traffic, but need significant advances to extend to urban traffic. Indeed, urban traffic is by nature a network problem, with issues about modeling intersections, and about dealing with the increased complexity. Our contributions have covered both estimation and prediction problems and control design.

Regarding traffic state estimation in urban networks, our contributions have dealt with three main sub-problems. First, the optimal sensor location problem was considered. In 39, the location of turning ratio sensors is considered for the dynamic case, under a limited number of available sensors. The second problem considers the estimation of flow and density using heterogeneous sources of information, such as fixed sensors and aggregated vehicle velocities from Floating Car Data (FCD). In 39 and 38, we used FCD speed information directly to better model urban intersections. For the third problem, we consider the estimation of the aggregated density of an urban network. To solve this problem, we propose a method to calculate a virtual representation of the same underlying physical network where each road is divided into a number of cells, such that the estimator for the virtual system converges. We show that the difference between the real and virtual averages is small. Contributions for this problem were published in 38. These contributions were tested using real data collected in the city of Grenoble via the Grenoble Traffic Lab for urban networks (GTL-Ville).

Regarding control design, we have studied control of traffic networks where the actuators can be either traffic lights schedule or variable speed limits. Most recently, we switched our focus from classical traffic performance objectives to suitably-defined performance indexes, so as to study and minimise the fuel consumption and hence the ecological impact of traffic 37, 45. To estimate the fuel consumption, a macroscopic network traffic model is associated with an artificial neural network calibrated using a microscopic physical energy model and data provided by a microscopic traffic simulator. We find that speed limits directly impact energy consumption and pollutant emissions, as they affect the accelerations and average speeds through the network. We design controllers with variable speed limits and with signalized access control, for improved environmental sustainability and traffic performance both in a synthetic urban area and in the peri-urban area at its boundaries. Controllers are designed with non-linear model predictive control, in which the traffic evolution and the fuel consumption are predicted with macroscopic models, and then evaluated using the microscopic traffic simulator SUMO and a physical fuel consumption and NOx emission model. The results reveal that in transient phases between different levels of congestion, the variable speed-limit controller is faster to decongest the network, in an energy-efficient way, resulting in an improvement of the environmental sustainability and the traffic performance both in the controlled network, and at its boundary roads.

2D traffic models

Macroscopic traffic models use classical fluid dynamics equations to describe car flow on a stretch of road where vehicles are treated as infinitesimal particles and we look at the evolution of their density. The basic evolution equation, which corresponds to mass conservation, expresses the conservation of the number of vehicles. Models that tried to extend this idea to traffic flow on road networks have not been successful in representing correctly traffic dynamics on networks. In fact, state-of-the-art traffic assignment models integrate traffic dynamics based on first-order nonlinear partial differential equation (PDE) models such as the Lighthill-Whitham-Richards (LWR) model, but they have some limitations in terms of their scalability and computation time due to the complexity of the underlying assignment problem. In our perspective, it is fundamental for traffic control, understanding the network effects and design network models that capture how the various traffic streams interact and evolve throughout the network. We have addressed the problem of describing correctly traffic flow dynamics on networks by using new concepts as 2D models and micro-macro models on networks, in relation with the research undertaken in Axis 2. The second generation came out this year through the thesis work of L. Tumash 51, as well as novel control techniques that involve boundary control and traffic demand 25.

Heterogeneity and autonomy in traffic

After 70 years of research, traffic flows of homogeneous vehicles are fairly well understood. More elusive is the understanding of heterogeneous traffic flows. As of today, a novel and peculiar sort of heterogeneity is appearing in traffic: the presence of automated (possibly autonomous) and connected vehicles (CAVs). Their appearance has motivated us to assess their impact on traffic and explore their potential as means for estimation and for control. Indeed until recently, traffic control infrastructures, such as ramp metering systems and variable speed limits, have been considered to be the essential tools for all traffic estimation and control goals, for instance mitigation of fluctuations in traffic flow . Today, instead, the advances in automation have brought the idea of exploiting CAVs for traffic control purposes.

In 2018, the first experimental result has finally been showed in 75: using the same ring setup of 76, one of the HVs was replaced with an AV, so as to obtain a mixed traffic scenario with a single AV. Such a ring setup approximates a scenario in which AVs are sparsely and periodically introduced in the traffic. Starting from this practical evidence of the possibility of controlling traffic flow via a limited number of autonomous vehicles, our team has developed the rigorous analysis of these experiments. Our approach has been to assess the effects, and potential improvements, of autonomous vehicles in terms of system-theoretic properties of the collective vehicle dynamics, such as of stability and string stability 13, 12. To this goal we have exploited tools that pertain to Axis 1, where the vehicles constitute the nodes of a network of interactions.

Further results have been obtained about the coordination of CAVs in challenging situations of merging meneuvers 14 and of unreliable communication 6.

Multimodal mobility & pedestrial navigation

Mobility is currently evolving in urban scenarios and multimodality today is the key to more efficient transportation. In order to analyze the ecological impact of the various transportation modes, it is important to be able to detect the mode used by the commuter and the rule used to switch from one mode to another. The ultimate goal is to suggest smarter itineraries to commuters. To this purpose, detection and classification of activities in human mobility from one's principal residence to one's destination (for example, place of work, place of entertainment, etc.) is an important study to carry out. We aim to identify, with high precision, the nature of the transportation modes used during the day (walking, cycling, public transportation, car, etc.) as well as transitions from one mode to another. To reach this goal, our studies involve inertial and attitude modules, embedded in most inertial units, connected watches and smartphones. These technological tools constitute truly innovative and promising instrumentation for non-invasive automatic information capture. In 41 we have devised machine learning approaches for transportation mode detection (bus, tramway, walking, bike, kick scooter), by using features extracted from IMUs (Inertial Magnetic Units). The location of sensors on the body is crucial in order to get accurate results.

Another relevant issue in pedestrial navigation is estimating the velocity of a moving body. In 29 we propose an innovative method that only uses raw data from a triad of low-cost inertial sensors, i.e. accelerometer and gyroscope, as well as a determined arrangement of magnetometer array. The proposed approach combines a magnetic field gradient-based Extended Kalman Filter (EKF), with a Bidirectional Long Short-Term Memory (BiLSTM) network. This is to better estimate the velocity, especially when the magnetic field disturbances are low, which causes other magnetic field-based methods to be inaccurate. The proposed method also makes it possible to well update the velocity regardless of sensor location, without any heavy computation or complex tuning, as the case for the Zero-Velocity Update Technique (ZUPT). The performance of the proposed approach is demonstrated through real experiments data using a Magneto-Inertial Tachymeter (MIT). The obtained results show the efficiency of the velocity and position estimation, for different sensor placements and trajectory scenarios.

An independent line of research in multimodality deals with network optimization for multimodal transportation. Considering the case of the city of Johanesburg, South Africa, we have devised new techniques for network design for integrating non-motorized transportation mode to a bus network. For this purpose a societal cost is included in the optimization problem 16.

Opinion dynamics and social influence

Models of social influence are much studied in network science to understand the dynamics of opinions and beliefs. The team activity in this field has been focused on the following issue  68. Social influence, through phenomena of imitation and peer pressure, tends to favour the agreement of opinions and beliefs: nevertheless, disagreement persists in social groups. How can we explain the persistence of disagreement? Our research has rigorously studied multiple mathematical models that aim to understand the persistence of disagreement. The most recent results regard the effects of limited confidence between peers 44, which can explain the formation of opinion groups. Studying these dynamics has required to solve delicate mathematical questions related to switching, nonsmooth and hybrid dynamical systems  67.

Attention dynamics in social media

According to some popular narrative, social media are plagued by issues like the viral diffusion of fake news and the formation of filter bubbles, that is situations in which an Internet user encounters only information and opinions that conform to and reinforce his/her own beliefs. Our research makes the hypothesis that these phenomena are a natural byproduct of the very nature of online social networks, which make interactions highly dynamical and introduce unprecedented effects of feedback and scale through the action of algorithms that measure, personalize, and monetize an individual’s online experience  77. Our research more precisely concentrates on what we can call “trending bubbles": digital media and their algorithms concentrate the public debate, drawing a disproportionate amount of attention on a few items and then away from them in a very short time. These effects derive from the tendency to emphasize novelty and timeliness in terms of identifying unprecedented surges of activity. Concretely, this line of research aims at identifying the concentration and scattering of media attention through a parsimonious mathematical model that captures the time evolution of collective behaviors. We have already developed a mathematical model for the attention dynamics 7 and we are currently testing the predictions of the model on data sets collected with our partners at CIS, Paris, to record the fruition of contents on selected YouTube channels and on Twitter.

Feedback in recommendation systems

In online platforms, recommender systems are responsible for directing users to relevant contents. In order to enhance the users engagement, recommender systems adapt their output to the reactions of the users, who are in turn affected by the recommended contents. This reciprocal influence creates a feedback loop that is the focus of our work. Our main result so far has been a tractable analytical model of a user that interacts with an online news aggregator 24. Creating this model has required three delicate steps:

1. defining the model of the user (who assimilates the received information with a confirmation bias);
2. defining the model of the recommender (that proposes items with the goal of maximizing the number of user's clicks);
3. specifying their interconnection, that is, the information that they exchange.

This model is able to analytically underline the feedback loop between the evolution of the users opinion and the personalised recommendation of contents, and yields qualitative predictions that support the concerns about potential long-term effects on the consumption of contents by users. Ongoing work is addressing the experimental validation of these results.

Testing strategies

Testing is a crucial control mechanism in the beginning phase of an epidemic when the vaccines are not yet available. It enables the public health authority to detect and isolate the infected cases from the population, thereby limiting the disease transmission to susceptible people. However, despite the significance of testing in epidemic control, the recent literature on the subject lacks a control-theoretic perspective. In our papers 35, 17, an epidemic model is proposed that incorporates the testing rate as a control input and differentiates the undetected infected from the detected infected cases, who are assumed to be removed from the disease spreading process in the population. After estimating the model on the data corresponding to the beginning phase of COVID-19 in France, two testing policies are proposed: the so-called best-effort strategy for testing (BEST) and constant optimal strategy for testing (COST). The BEST policy is a suppression strategy that provides a minimum testing rate that stops the growth of the epidemic when implemented. The COST policy, on the other hand, is a mitigation strategy that provides an optimal value of testing rate minimizing the peak value of the infected population when the total stockpile of tests is limited. Both testing policies are evaluated by their impact on the number of active intensive care unit (ICU) cases and the cumulative number of deaths for the COVID-19 case of France.

Human mobility and epidemics

Reducing human mobility is a very effective non-pharmaceutical intervention to reduce epidemics spread, and lockdowns have been effectively used in various countries in 2020. However, it is clear that mobility reductions have heavy economic and social effects. In our team, we have focused on understanding the interplay of human mobility and epidemics spread at the urban level. Our model 34 is based on an urban mobility model describing daily mobility between homes and destinations such as schools, workplaces, shopping and leisure, coupled with SIR epidemics evolution at each node of the mobility network. Mobility restrictions can be easily described in this model, either by reducing capacity of some destinations, or by reducing opening hours. An optimization problem can then be devised, to maximise economic activity (a suitably weighted average of mobility towards various categories of destinations) under the constraint that epidemics spread remains low enough to avoid saturation of ICU beds in hospitals. The model from 34 has then be extended and implemented to a city-level model that realistically reconstructs mobility in the Grenoble area. As a result, the web interface GTL-covid is a platform which can be used to simulate different scenarios of mobility (with or without restrictions of capacity and of opening hours) and visualise their effects on epidemic spread in the Grenoble area.

Telecommuting strategies

In our paper 15 we develop a simulation study to analyze COVID-19 outbreaks on three real-life contact networks recorded in a workplace, a primary school and a high school in France. Our study provides a fine-grained analysis of the impact of contact-limiting strategies at workplaces, schools and high schools, including: (1) Rotating strategies, in which workers are evenly split into two shifts that alternate on a daily or weekly basis; and (2) On-Off strategies, where the whole group alternates periods of normal work interactions with complete telecommuting. We model epidemics spread in these different setups using a stochastic discrete-time agent-based transmission model that includes the coronavirus most salient features: super-spreaders, infectious asymptomatic individuals, and pre-symptomatic infectious periods. Our study yields consistent results that can provide guidance for public health decisions related to telecommuting.

Societal impact of Covid-19 and lockdowns

Online platforms register human behaviors and have therefore recorded ample evidence of the behavioral changes that we have endured due to the Covid-19 pandemics and the ensuing lockdowns. The lockdown orders established in multiple countries in response to the Covid-19 pandemic are arguably one of the most widespread and deepest shock experienced by societies in recent years. Studying their impact trough the lens of social media offers an unprecedented opportunity to understand the susceptibility and the resilience of human activity patterns to large-scale exogenous shocks. In our work 8 we investigate the changes that this upheaval has caused in online activity in terms of time spent online, themes and emotion shared on the platforms, and rhythms of contents consumption. We also examine the resilience of certain platform characteristics, such as the daily rhythms of emotion expression. We base our analysis on two independent datasets about the French cyberspace: a fine-grained temporal record of almost 100 thousand YouTube videos and a collection of 8 million Tweets between February 17 and April 14, 2020. In both datasets we observe a reshaping of the circadian rhythms with an increase of night activity during the lockdown. The analysis of the videos and tweets published during lockdown shows a general decrease in emotional contents and a shift from themes like work and money to themes like death and safety. However, the daily patterns of emotions remain mostly unchanged, thereby suggesting that emotional cycles are resilient to exogenous shocks. Traffic data collected in the city of Johannesburg during the first lockdown also gives rise to the development of an original modeling approach for essential traffic and its ecological impact 31.

9.1.1 Participation in other International Programs

• PercepTrans

  P.I.: A. Kibangou- PHC PROTEA, France-South Africa, duration: 2021-2022. Partner: University of Johannesburg.

  Abstract: PercepTrans aims at merging perception and quantitative measurements to assess quality of service in public transportation by using machine learning techniques. Despite travel restrictions due to COVID-19, data collection has been performed in Johannesburg and Durban in November 2021. Collected data are under analysis. In parallel to this, a model for essential traffic has been derived.

9.3.1 FP7 & H2020 projects

• Scale-FreeBack.

  ERC Advanced Grant (2016–2022). PI: C. Canudas de Wit.

  Abstract: The overall aim of Scale-FreeBack is to develop holistic scale-free control methods of controlling complex network systems in the widest sense, and to set the foundations for a new control theory dealing with complex physical networks with an arbitrary size. Scale-FreeBack envisions devising a complete, coherent design approach ensuring the scalability of the whole chain (modelling, observation, and control). It is also expected to find specific breakthrough solutions to the problems involved in managing and monitoring large-scale road traffic networks. Field tests and other realistic simulations to validate the theory will be performed using the equipment available at the Grenoble Traffic Lab center and a microscopic traffic simulator replicating the full complexity of the Grenoble urban network. See also: scale-freeback.eu

9.3.2 Other european programs/initiatives

• Mathematical models for interacting dynamics on networks.

  COST Action no. 18232, 2019-2021, PI: M.L. Delle Monache.

  Abstract: Many physical, biological, chemical, financial or even social phenomena can be described by dynamical systems. It is quite common that the dynamics arises as a compound effect of the interaction between subsystems in which case we speak about coupled systems. This Action shall study such interactions in particular cases from three points of view: 1. the abstract approach to the theory behind these systems, 2. applications of the abstract theory to coupled structures like networks, neighbouring domains divided by permeable membranes, possibly non-homogeneous simplicial complexes, etc., 3. modelling real-life situations within this framework. The purpose of this Action is to bring together leading groups in Europe working on a range of issues connected with modelling and analysing mathematical models for dynamical systems on networks. It aims to develop a semigroup approach to various (non-)linear dynamical systems on networks as well as numerical methods based on modern variational methods and applying them to road traffic, biological systems, and further real-life models. The Action also explores the possibility of estimating solutions and long time behaviour of these systems by collecting basic combinatorial information about underlying networks

10.1.1 Scientific events: organisation

C. Canudas-de-Wit has co-organized the 1st Workshop `Epidemics: modeling, identification, control', Paris, Oct. 14th, 2021

P. Frasca has co-organized the 42-nd Grenoble Summer School of Automatic Control on the topic “Data and Learning for Control”, September 6-10, 2021 (webpage)

10.1.2 Scientific events: selection

M. L. Delle Monache has been associate editor in the following editorial boards:

• “European Control Association (EUCA) Conference Editorial Board” (ECC) since 2020
• IEEE Intelligence Transportation Systems Conference since Jan. 2021

H. Fourati has been

• Member of the Conference Editorial Board (CEB) of the IEEE Control Systems Society (CSS), 2021-present.
• Member of the Technical Program Committee (TCP) of the International Conference on Indoor Positioning and Indoor Navigation (IPIN), Barcelona, Spain 2021.

F. Garin has been Associate Editor in the following editorial boards:

• “European Control Association (EUCA) Conference Editorial Board” (ECC) since 2017

10.1.3 Journal editorial activities

C. Canudas de Wit has been

• Senior Editor of the Asian Journal of Control AJC
• Senior Editor of IEEE Transactions on Control of Networks Systems IEEE-TCNS
• Editorial Advisory Board of Transportation Research part C

M. L. Delle Monache has been part of the Early Career Editorial Advisory Board (EAB) of Transportation Research part C since April 2021.

H. Fourati has been

• Associate Editor of the Asian Journal of Control
• Associate Editor of the Open Transportation Journal
• Associate Editor at the Journal of Complex Engineering Systems (CES), 2021-present.

P. Frasca has served in the editorial boards of

• Automatica, Associate Editor (2021–2024)
• IEEE Control Systems Letters, Associate Editor (2017–2021)
• Asian Journal of Control (Wiley), Associate Editor (2017–2022)

F. Garin has been Associate Editor in the following editorial board:

• IEEE Control Systems Letters since Dec. 2021

10.1.4 Invited talks

• P. Frasca. “Graphons: A tool for the analysis of dynamical systems on large networks”, SSM Naples, Italy, November 25, 2021
• P. Frasca. “The closed loop between opinion formation and personalised recommendations”, Technion, Haifa, Israel, January 4, 2021
• A. Kibangou, “Transportation mode detection using AI techniques and inertial sensors", University of Johannesburg, Johannesburg, South Africa, Nov. 5th, 2021.

10.1.5 Leadership within the scientific community

• SAGIP
  C. Canudas-de-Wit is member of the `Conseil d'Administration' of SAGIP, the French Society of Automatic Control and Industrial Engineering
• CNU
  H. Fourati is an elected member of CNU61 (Conseil National des Universités, Génie informatique, Automatique et Traitement du Signal), since 2015. The CNU61 committee oversees promotions of university lecturers all over France.
• GdR MACS
  P. Frasca is member of the steering committee of the GdR MACS, a body that is funded by CNRS and coordinates national activities in Automatic Control in France, 2019–2023
• IEEE and IFAC
  C. Canudas de Wit is Fellow of the IEEE and of the IFAC (International Federation of Automatic Control), both since 2016. P. Frasca is Senior member of the IEEE since 2018. Team members participate to the following technical committees of IEEE Control Systems Society and of the IFAC: IEEE-CSS Technical Committee “Networks and Communications Systems” (P. Frasca and F. Garin); IFAC Technical Committee 1.5 on Networked Systems (P. Frasca and C. Canudas de Wit); IFAC Technical Committee 2.5 on Robust Control (P. Frasca); IFAC Technical Committee 7.1 Automotive Control (C. Canudas de Wit); IFAC Technical Committee 7.4 Transportation systems (C. Canudas de Wit); IFAC TC 9.2. Systems and Control for Societal Impact (P. Frasca).

10.1.6 Scientific expertise

• Advisory boards
  C. Canudas-de-Wit is member of the advisory board (2017-21) of the project `Societal-Scale Cyber-Physical Transport Systems' supported by the Swedish Strategic Research Foundation, KTH, Stockholm, Sweden.

10.1.7 Research administration

• CE
  C. Canudas-de-Wit is member of the Evaluation Committee (Commission d'Evaluation) of Inria (committee that oversees all hiring, promotion, and evaluation procedures for all Inria).
• HCERES
  C. Canudas-de-Wit is member of the evaluation committee of LITIS laboratory, Rouen. HCERES is a nation-level evaluation held every 5 years.
• GIPSA-lab
  F. Garin is `responsable du pôle automatique et diagnostic’ (chair of the Automatic Control and Diagnostics departement) at GIPSA-lab, since Jan 2020. A. Kibangou is an elected member of `Conseil de laboratoire' of GIPSA-lab, since Jan 2020.
• Inria Grenoble
  Several team members have been involved in committees at Inria Grenoble Rhône-Alpes. C. Canudas de Wit is a member of the COST-Inria-RA (Conseil d’Orientation Scientifique et Technologique, Inria Rhône-Alpes), since 2017. F. Garin has been president (since July 2019) of `Comité des Emplois Scientifiques' (post-docs and `délégations'). M. L. Delle Monache has been a member of `Comité des Études Doctorales' (PhD grants) and `Commission de développement technologique' (research engineers).
• Persyval-lab
  F. Garin has been member of the research committee of PERSYVAL-Lab LabEx as co-leader of the research axis on cyber-physical systems (since 2019).
• UGA
  A. Kibangou is in his second term as an elected member of “Conseil du pôle MSTIC" at Univ. Grenoble Alpes. He has been member of this council since 2016. H. Fourati is member of “Conseil documentaire” of University Grenoble Alpes representing the discipline “Sciences and technologies”, 2020-2023.

10.2.1 Teaching

H. Fourati gives each year around 250h of lectures and labs on average for first and second year students at the electrical engineering department (GEII) of IUT1, and third year students of bachelor's degree at Univ. Grenoble Alpes. The courses include Mathematics, logics, networks and automatic control.

P. Frasca has lectured about Intelligent Transportation Systems & Coordination of Autonomous Vehicles in the Master Autonomous and Robotics Systems (MARS) of the University of Grenoble (4h in 2021).

F. Garin gives each year a class `Distributed Algorithms and Network Systems', 13.5h, M2, Univ. Grenoble Alpes.

A. Kibangou gives each year 250h of lectures and labs on average for first and second year students at the electrical engineering department (GEII) of IUT1 at Univ. Grenoble Alpes. The courses include Control theory and Mathematics.

10.2.2 Supervision

• PhD: Thembani Moyo, Sustainability of urban public transport through ecological traffic management: the case of Johannesburg, South Africa, University of South Africa, December 2021, co-advised by A. Kibangou and W. Musakwa (Univ. of Johannesburg).
• PhD: Muhammad Umar B. Niazi, Aggregated monitoring of large-scale network systems and control of epidemics, Univ. Grenoble Alpes, July 2021, co-advised by C. Canudas de Wit and A. Kibangou.
• PhD: Denis Nikitin, Scalable Large-Scale Control of Network Aggregates, Univ. Grenoble Alpes, September 2021, co-advised by C. Canudas de Wit and P. Frasca.
• PhD: Bassel Othman, Variable speed limits and signalized access control in an urban road network for improved environmental sustainability, Univ. Grenoble Alpes, October 2021, co-advised by C. Canudas de Wit and G. De Nunzio (IFPEN).
• PhD: Martin Rodriguez-Vega, Optimal Sensor Placement And Density Estimation In Large-Scale Traffic Networks, Univ. Grenoble Alpes, April 2021, co-advised by C. Canudas de Wit and H. Fourati.
• PhD: Nigina Toktassynova, Simulation and research of control system of phosphorite ore sintering process, Kazakh National Research Technical University, December 2021, co-advised by B. Suleimenov (Kazakh National Research Technical Univ.) and H. Fourati.
• PhD: Liudmila Tumash, Traffic control in large-scale urban networks, Univ. Grenoble Alpes, September 2021, co-advised by C. Canudas de Wit and M. L. Delle Monache.
• PhD: Makia Zmitri, Magnetometer array-based indoor navigation using Kalman filter, Univ. Grenoble Alpes, September 2021, co-advised by H. Fourati and C. Prieur.
• PhD in progress: Tommaso Toso, Online Routing Recommendations in Multimodal Transportation Networks, from October 2021, co-advised by A. Kibangou and P. Frasca.
• PhD in progress: Nomfundo Cele, Perception of Quality of Service on public transportation in developing countries, from November 2020, co-advised by A. Kibangou and W. Musakwa (Univ. of Johannesburg).
• PhD in progress: Nassim Bouarour, User behavior and recommendation systems, from Oct. 2020, co-advised by Sihem Amer-Yahia (LIG Grenoble), Idir Benouaret (LIG Grenoble) and P. Frasca.
• PhD in progress: Tarso Kraemer Sarzi Sartori, Mitigation of radiation effects on the attitude estimation processing of autonomous things, from Oct. 2020, co-advised by R. Possamai Bastos (TIMA Grenoble) and H. Fourati.
• PhD in progress: Maria Castaldo, Disorders of online media, from Nov. 2019, co-advised with Tommaso Venturini (Centre Internet et Société, CNRS)
• PhD in progress: Pierre Gogendeau, Smart integrated system for geolocation based on multiples heterogeneous and transitory information sources, Univ. Montpellier, from Sept. 2019, co-advised by Serge Bernard (LIRMM Montpellier), Sylvain Bonhommeau (IFREMER) and H. Fourati
• PhD in progress: Renato Vizuete, Open Multi-Agent Systems, from Sept. 2019, co-advised with Elena Panteley
• PhD in progress: Ujjwal Pratap, Resilient control in scale-free networks, from Feb. 2019, co-advised by C. Canudas de Wit, F. Garin, and H. Sandberg (KTH Stockholm).

10.3.1 Articles and contents

Interview by Marie Lyan, La Tribune–Auvergne-Rhône-Alpes, about Covid-19 research published in PLOS Computational Biology, 2021.

10.3.2 Interventions

M. L. Delle Monache gave a talk to students of 8th grade (4ème) and 11th Grade (1ère) in the Cérémonie de remise de prix des Olympiades de Mathématiques, La mobilité et les vehicules autonomes, Université Grenoble Alpes, France, June 2021.

International journals

• 6 articleF.Francesco Acciani, P.Paolo Frasca, G.Geert Heijenk and A.Anton Stoorvogel. Stochastic String Stability of Vehicle Platoons via Cooperative Adaptive Cruise Control With Lossy Communication.IEEE Transactions on Intelligent Transportation Systems2021, 1-11
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• 7 articleM.Maria Castaldo, T.Tommaso Venturini, P.Paolo Frasca and F.Floriana Gargiulo. Junk News Bubbles: Modelling the Rise and Fall of Attention in Online Arenas.New Media and SocietyFebruary 2021, 1-15
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• 8 articleM.Maria Castaldo, T.Tommaso Venturini, P.Paolo Frasca and F.Floriana Gargiulo. The Rhythms of the Night: increase in online night activity and emotional resilience during the Spring 2020 Covid-19 lockdown.EPJ Data Science101December 2021, 1-15
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• 9 articleM. L.Maria Laura Delle Monache, K.Karen Chi, Y.Yong Chen, P.Paola Goatin, K.Ke Han, J.-M.Jing-Mei Qiu and B.Benedetto Piccoli. A three-phase fundamental diagram from three-dimensional traffic data.Axioms1012021, 17
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• 10 articleM.Mauro Franceschelli and P.Paolo Frasca. Stability of Open Multi-Agent Systems and Applications to Dynamic Consensus.IEEE Transactions on Automatic Control665May 2021, 2326-2331
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• 11 articleF.Federica Garin, S.Sebin Gracy and A.Alain Kibangou. Strong Structural Input and State Observability of Linear Time-Invariant Systems: Graphical Conditions and Algorithms.European Journal of Control58March 2021, 27-42
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• 12 articleV.Vittorio Giammarino, S.Simone Baldi, P.Paolo Frasca and M. L.Maria Laura Delle Monache. Traffic Flow on a Ring With a Single Autonomous Vehicle: An Interconnected Stability Perspective.IEEE Transactions on Intelligent Transportation Systems228August 2021, 4998-5008
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• 13 articleG.George Gunter, D.Derek Gloudemans, R. E.Raphael E. Stern, S. T.Sean T McQuade, R.Rahul Bhadani, M.Matt Bunting, M. L.Maria Laura Delle Monache, R.Roman Lysecky, B.Benjamin Seibold, J.Jonathan Sprinkle, B.Benedetto Piccoli and D. B.Daniel B. Work. Are commercially implemented adaptive cruise control systems string stable?IEEE Transactions on Intelligent Transportation Systems2211November 2021, 6992-7003
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• 14 articleD.Di Liu, S.Simone Baldi, V.Vishrut Jain, W.Wenwu Yu and P.Paolo Frasca. Cyclic communication in adaptive strategies to platooning: the case of synchronized merging.IEEE Transactions on Intelligent Vehicles63September 2021, 490-500
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• 15 articleS.Simon Mauras, V.Vincent Cohen-Addad, G.Guillaume Duboc, M.Max Dupré la Tour, P.Paolo Frasca, C.Claire Mathieu, L.Lulla Opatowski and L.Laurent Viennot. Mitigating COVID-19 outbreaks in workplaces and schools by hybrid telecommuting.PLoS Computational Biology178August 2021, 1-24
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• 16 articleT.Thembani Moyo, A.Alain Kibangou and W.Walter Musakwa. Societal context-dependent multi-modal transportation network augmentation in Johannesburg, South Africa.PLoS ONE164April 2021, e0249014
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• 17 articleM. U.Muhammad Umar B. Niazi, A.Alain Kibangou, C.Carlos Canudas de Wit, D.Denis Nikitin, L.Liudmila Tumash and P.-A.Pierre-Alexandre Bliman. Modeling and Control of Epidemics through Testing Policies.Annual Reviews in Control52October 2021, 554-572
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• 18 articleM. U.Muhammad Umar B. Niazi and A. B.Arif Bülent Özgüler. A Differential Game Model of Opinion Dynamics: Accord and Discord as Nash Equilibria.Dynamic Games and Applications111March 2021, 137–160
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• 19 articleD.Denis Nikitin, C.Carlos Canudas de Wit and P.Paolo Frasca. A Continuation Method for Large-Scale Modeling and Control: from ODEs to PDE, a Round Trip.IEEE Transactions on Automatic Control2022
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• 20 articleD.Denis Nikitin, C.Carlos Canudas de Wit and P.Paolo Frasca. Control of Average and Deviation in Large-Scale Linear Networks.IEEE Transactions on Automatic Control2021
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• 21 articleU.Ujjwal Pratap, C.Carlos Canudas de Wit and F.Federica Garin. Outlier detection and trimmed-average estimation in network systems.European Journal of Control602021, 36-47
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• 22 articleM.Martin Rodriguez-Vega, C.Carlos Canudas de Wit and H.Hassen Fourati. Average density estimation for urban traffic networks: application to the Grenoble network.Transportation Research Part B: Methodological1542021, 21-43
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• 23 articleM.Martin Rodriguez-Vega, C.Carlos Canudas de Wit and H.Hassen Fourati. Dynamic density and flow reconstruction in large-scale urban networks using heterogeneous data sources.Transportation research. Part C, Emerging technologies137103569April 2022
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• 24 articleW. S.Wilbert Samuel Rossi, J. W.Jan Willem Polderman and P.Paolo Frasca. The closed loop between opinion formation and personalised recommendations.IEEE Transactions on Control of Network Systems2021, 1-12
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• 25 articleL.Liudmila Tumash, C.Carlos Canudas de Wit and M. L.Maria Laura Delle Monache. Boundary Control Design for Traffic with Nonlinear Dynamics.IEEE Transactions on Automatic ControlApril 2022
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• 26 articleR.Renato Vizuete, P.Paolo Frasca and E.Elena Panteley. On the influence of noise in randomized consensus algorithms.IEEE Control Systems Letters532021, 1025-1030
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• 27 articleR.Renato Vizuete, F.Federica Garin and P.Paolo Frasca. The Laplacian Spectrum of Large Graphs Sampled from Graphons.IEEE Transactions on Network Science and Engineering822021, 1711-1721
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• 28 articleY.Yanbing Wang, G.George Gunter, M.Matt Nice, M. L.Maria Laura Delle Monache and D. B.Daniel B Work. Online parameter estimation methods for adaptive cruise control systems.IEEE Transactions on Intelligent Vehicles62June 2021, 288-298
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• 29 articleM.Makia Zmitri, H.Hassen Fourati and C.Christophe Prieur. BiLSTM Network-Based Extended Kalman Filter for Magnetic Field Gradient Aided Indoor Navigation.IEEE Sensors Journal2021, 1-8
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International peer-reviewed conferences

• 30 inproceedingsP.Pierre Gogendeau, S.Sylvain Bonhommeau, H.Hassen Fourati, M.Michel Renovell, F.Fabien Soulier, D.Denis De Oliveira and S.Serge Bernard. Dead-reckoning for marine animals: trade-offs between estimation accuracy and power consumption.BLS7 2021 - 7th International Bio-Logging Science SymposiumHonolulu, United StatesOctober 2021
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• 31 inproceedingsA.Alain Kibangou, T.Thembani Moyo and W.Walter Musakwa. Dynamic Linear Model for Urban Essential Traffic Congestion and Emissions.CCA 2021 - Control Conference AfricaMagaliesburg, South AfricaDecember 2021, 1-6
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• 32 inproceedingsT.Tarso Kraemer Sarzi Sartori, H.Hassen Fourati, M.Matheus Garay Trindade and R.Rodrigo Possamai Bastos. Assessment of Attitude Estimation Processing System under Neutron Radiation Effects.RADECS 2021 - Conference on Radiation Effects on Components and SystemsVienna, AustriaSeptember 2021
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• 33 inproceedingsC.Charles Monnoyer de Galland, R.Renato Vizuete, J. M.Julien M. Hendrickx, P.Paolo Frasca and E.Elena Panteley. Random coordinate descent algorithm for open multi-agent systems with complete topology and homogeneous agents.CDC 2021 - 60th IEEE Conference on Decision and ControlAustin, Texas, United StatesIEEEDecember 2021, 1701-1708
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• 34 inproceedingsM. U.Muhammad Umar B. Niazi, C.Carlos Canudas de Wit, A.Alain Kibangou and P.-A.Pierre-Alexandre Bliman. Optimal Control of Urban Human Mobility for Epidemic Mitigation.CDC 2021 - 60th IEEE Conference on Decision and ControlAustin, United StatesDecember 2021
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• 35 inproceedingsM. U.Muhammad Umar B. Niazi, A.Alain Kibangou, C.Carlos Canudas de Wit, D.Denis Nikitin, L.Liudmila Tumash and P.-A.Pierre-Alexandre Bliman. Effective Testing Policies for Controlling an Epidemic Outbreak.CDC 2021 - 60th IEEE Conference on Decision and ControlAustin, United StatesDecember 2021
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• 36 inproceedingsD.Denis Nikitin, C.Carlos Canudas de Wit and P.Paolo Frasca. Boundary Control for Stabilization of Large-Scale Networks through the Continuation Method.CDC 2021 - 60th IEEE Conference on Decision and ControlProceedings of the 60th Conference on Decision and ControlAustin, Texas, United StatesDecember 2021, 4786-4791
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• 37 inproceedingsB.Bassel Othman, G.Giovanni De Nunzio, D. D.Domenico Di Domenico and C.Carlos Canudas de Wit. Urban Road Traffic Fuel Consumption Optimization via Variable Speed Limits or Signalized Access Control: A Comparative Study.CDC 2021 - 60th IEEE Conference on Decision and ControlAustin, Texas, United StatesIEEEDecember 2021, 1-6
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• 38 inproceedingsM.Martin Rodriguez-Vega, C.Carlos Canudas de Wit and H.Hassen Fourati. Flow and density estimation in Grenoble using real data.Engineering ProceedingsITISE 2021 - 7th International conference on Time Series and Forecasting51Gran Canaria, SpainJuly 2021, 43
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• 39 inproceedingsM.Martin Rodriguez-Vega, C.Carlos Canudas de Wit and H.Hassen Fourati. Urban network traffic state estimation using a data-based approach.CTS 2021 - 16th IFAC Symposium on Control in Transportation SystemsLille (virtual), FranceJune 2021, 1 - 7
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• 40 inproceedingsJ. P.Joao Paolo Sales Brum, T.Tarso Kraemer Sarzi Sartori, J.Jiaru Lin, M.Matheus Garay Trindade, H.Hassen Fourati, R.Raoul Velazco and R.Rodrigo Possamai Bastos. Evaluation of Attitude Estimation Algorithm under Soft Error Effects.LATS 2021 - IEEE Latin-American Test SymposiumPunta del Este (Virtual event), UruguayIEEEOctober 2021
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• 41 inproceedingsF.Fadoua Taia Alaoui, H.Hassen Fourati, A.Alain Kibangou, B.Bogdan Robu and N.Nicolas Vuillerme. Kick-scooters detection in sensor-based transportation mode classification methods.CTS 2021 - 16th IFAC Symposium on Control in Transportation SystemsLille (virtual), FranceJune 2021, 1-6
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• 42 inproceedingsL.Liudmila Tumash, C.Carlos Canudas de Wit and M. L.Maria Laura Delle Monache. Boundary Control for Multi-Directional Traffic on Urban Networks.CDC 2021 - 60th IEEE Conference on Decision and ControlAustin, United StatesDecember 2021
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Conferences without proceedings

• 43 inproceedingsX.Xiang Dai, V.Vahid Nateghi, H.Hassen Fourati and C.Christophe Prieur. Q-Learning-Based Noise Covariance Adaptation inKalman Filter for MARG Sensors AttitudeEstimation.IEEE International Symposium on Inertial Sensors & SystemsAvignon, FranceMay 2022
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Scientific book chapters

• 44 inbookF.Francesca Ceragioli, P.Paolo Frasca and W. S.Wilbert Samuel Rossi. Modeling Limited Attention in Opinion Dynamics by Topological Interactions.1354Network Games, Control and OptimizationCommunications in Computer and Information ScienceSpringer International PublishingSeptember 2021, 272-281
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• 45 inbookB.Bassel Othman, G.Giovanni De Nunzio, A.Antonio Sciarretta, D.Domenico Di Domenico and C.Carlos Canudas de Wit. Connectivity and Automation as Enablers for Energy-Efficient Driving and Road Traffic Management.Handbook of Climate Change Mitigation and AdaptationSpringerMarch 2021, XXVII, 2130
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Doctoral dissertations and habilitation theses

• 46 phdthesisT.Thembani Moyo. Sustainability of urban public transport through ecological traffic management: the case of Johannesburg, South Africa.University of South AfricaDecember 2021
• 47 thesisD.Denis Nikitin. Scalable Large-Scale Control of Network Aggregates.Université Grenoble Alpes [2020-....]September 2021
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• 48 thesisB.Bassel Othman. Variable speed limits and signalized access control in an urban road network for improved environmental sustainability.Université Grenoble Alpes [2020-....]October 2021
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• 49 thesisM.Martin Rodriguez vega. Optimal Sensor Placement And Density Estimation In Large-Scale Traffic Networks.Université Grenoble Alpes [2020-....]April 2021
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• 50 phdthesisN.Nigina Toktassynova. Simulation and research of control system of phosphorite ore sintering process.Kazakh National Research Technical UniversityKazakh National Research Technical UniversityDecember 2021
• 51 thesisL.Liudmila Tumash. Traffic control in large-scale urban networks.Université Grenoble Alpes [2020-....]September 2021
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• 52 phdthesisM.Makia Zmitri. Magnetometer array-based indoor navigation using Kalman filter.Université Grenoble AlpesSept 2021

Reports & preprints

• 53 miscM.Maria Castaldo, P.Paolo Frasca, T.Tommaso Venturini and F.Floriana Gargiulo. Fakes views, real trends. The crucial role of time in the authentication of online engagement metrics.July 2021
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• 54 miscF.Floriana Gargiulo, M.Maria Castaldo, T.Tommaso Venturini and P.Paolo Frasca. A collaborative path to scientific discovery: Distribution of labor, productivity and innovation in collaborative science.December 2021
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• 55 miscD.Denis Nikitin, C.Carlos Canudas de Wit, P.Paolo Frasca and U.Ursula Ebels. Synchronization of Spin-Torque Oscillators via Continuation Method.August 2021
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• 56 miscD.Denis Nikitin, C.Carlos Canudas de Wit and P.Paolo Frasca. Scale-free boundary control of multiple aggregates in large-scale networks.Cambridge, United KingdomMarch 2021, 1-5
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• 57 miscU.Ujjwal Pratap, C.Carlos Canudas de Wit and F.Federica Garin. Where, when and how people move in large-scale urban networks: the Grenoble saga.February 2022
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• 58 miscL.Liudmila Tumash, C.Carlos Canudas de Wit and M. L.Maria Laura Delle Monache. Boundary and In-Domain Control for Large-Scale Urban Traffic Networks.October 2021
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• 59 miscL.Liudmila Tumash, C.Carlos Canudas de Wit and M. L.Maria Laura Delle Monache. Multi-Directional Continuous Traffic Model For Large-Scale Urban Networks.December 2021
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• 60 miscY.Yanbing Wang, M. L.Maria Laura Delle Monache and D. B.Daniel B. Work. Identifiability of car-following dynamic.March 2021
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