172 citations · 516 across the 28 of their papers we have counts for
5 papers · 1 filter
Graph Signal Processing: Overview, Challenges and Applications
Antonio Ortega, Pascal Frossard, Jelena Kovačević +2
Research in Graph Signal Processing (GSP) aims to develop tools for processing data defined on irregular graph domains. In this paper we first provide an overview of core ideas in…
Resilient Distributed Estimation: Sensor Attacks
Yuan Chen, Soummya Kar, José M. F. Moura
This paper studies multi-agent distributed estimation under sensor attacks. Individual agents make sensor measurements of an unknown parameter belonging to a compact set, and, at e…
Learning Cooperative Visual Dialog Agents with Deep Reinforcement Learning
Abhishek Das, Satwik Kottur, José M. F. Moura +2
We introduce the first goal-driven training for visual question answering and dialog agents. Specifically, we pose a cooperative 'image guessing' game between two agents -- Qbot an…
Preorder Construct on Simple Undirected Graphs
Augusto Almeida Santos, José M. F. Moura, João Xavier
We construct a novel preorder on the set of nodes of a simple undirected graph. We prove that the preorder (induced by the topology of the graph) is preserved, e.g., by the logisti…
Thermodynamic Limit of Interacting Particle Systems over Time-varying Sparse Random Networks
Augusto Almeida Santos, Soummya Kar, José M. F. Moura +1
We establish a functional weak law of large numbers for observable macroscopic state variables of interacting particle systems (e.g., voter and contact processes) over fast time-va…