[HTML][HTML] An overview of structural systems theory

G Ramos, AP Aguiar, S Pequito - Automatica, 2022 - Elsevier
This paper provides an overview of the research conducted in the context of structural (or
structured) systems. These are parametrized models used to assess and design system …

[HTML][HTML] Designing communication networks for discrete-time consensus for performance and privacy guarantees

G Ramos, S Pequito - Systems & Control Letters, 2023 - Elsevier
Discrete-time consensus plays a key role in multi-agent systems and distributed protocols.
Unfortunately, due to the self-loop dynamics of the agents (an agent's current state depends …

[HTML][HTML] A resilient continuous-time consensus method using a switching topology

G Ramos, D Silvestre, AP Aguiar - Systems & Control Letters, 2022 - Elsevier
This paper addresses the design problem of a resilient consensus algorithm for agents with
continuous-time dynamics. The main proposal is that by incorporating a switching …

Resilient distributed state estimation with multi-hop communication

R Gao, GH Yang, S Wasly - Automatica, 2024 - Elsevier
This paper investigates the problem of resilient distributed state estimation for a linear
system in multi-hop communication networks. First, we introduce a graph-theoretic property …

On the trade-offs between accuracy, privacy, and resilience in average consensus algorithms

G Ramos, AMH Teixeira… - 2023 62nd IEEE …, 2023 - ieeexplore.ieee.org
There can be none. In this paper, we address the problem of a set of discrete-time
networked agents reaching average consensus privately and resiliently in the presence of a …

[HTML][HTML] Minimum jointly structural input and output selection

G Ramos, AP Aguiar, S Pequito - Automatica, 2024 - Elsevier
Large-scale dynamical systems are becoming pervasive today and the costs associated with
maintenance and processing should be kept to the minimum. In multi-agent systems …

Event-triggered scaled consensus for distributed networks in a compound noisy environment over markovian switched topologies

J Shang, Y Du, Z Liu, A Zhang, Y Zhang, T Zhou - Nonlinear Dynamics, 2024 - Springer
This article focuses on event-triggered scaled consensus for stochastic multi-agent systems
(SMASs) in the presence of multiplicative and additive noises in a Markovian switched …

The robust minimal controllability and observability problem

G Ramos, D Silvestre, C Silvestre - International Journal of …, 2021 - Wiley Online Library
In this paper, we study the Robust Minimal Controllability and Observability Problem
(rMCOP). The scenario that motivated this question is related to the design of a drone …

Privacy Preserving Average Consensus Through Network Augmentation

G Ramos, AP Aguiarz, S Karx… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Average consensus protocols play a central role in distributed systems and decision-making
such as distributed information fusion, distributed optimization, distributed estimation, and …

Towards Ethical Item Ranking: A Paradigm Shift from User-Centric to Item-Centric Approaches

G Ramos, M Marras, L Boratto - … of the 47th International ACM SIGIR …, 2024 - dl.acm.org
Ranking systems are instrumental in shaping user experiences by determining the
relevance and order of presented items. However, current approaches, particularly those …