16 citations · 70 across the 15 of their papers we have counts for
6 papers · 1 filter
Learning hidden influences in large-scale dynamical social networks: A data-driven sparsity-based approach
Chiara Ravazzi, Fabrizio Dabbene, Constantino Lagoa +1
Interpersonal influence estimation from empirical data is a central challenge in the study of social structures and dynamics. Opinion dynamics theory is a young interdisciplinary s…
Randomized opinion dynamics over networks: influence estimation from partial observations
Chiara Ravazzi, Sarah Hojjatinia, Constantino M. Lagoa +1
In this paper, we propose a technique for the estimation of the influence matrix in a sparse social network, in which individual communicate in a gossip way. At each step, a ra…
Distributed estimation from relative measurements of heterogeneous and uncertain quality
Chiara Ravazzi, Nelson P. K. Chan, Paolo Frasca
This paper studies the problem of estimation from relative measurements in a graph, in which a vector indexed over the nodes has to be reconstructed from pairwise measurements of d…
Ergodic Randomized Algorithms and Dynamics over Networks
Chiara Ravazzi, Paolo Frasca, Roberto Tempo +1
Algorithms and dynamics over networks often involve randomization, and randomization may result in oscillating dynamics which fail to converge in a deterministic sense. In this pap…
Gossips and Prejudices: Ergodic Randomized Dynamics in Social Networks
Paolo Frasca, Chiara Ravazzi, Roberto Tempo +1
In this paper we study a novel model of opinion dynamics in social networks, which has two main features. First, agents asynchronously interact in pairs, and these pairs are chosen…
Almost sure convergence of a randomized algorithm for relative localization in sensor networks
Chiara Ravazzi, Paolo Frasca, Roberto Tempo +1
This paper regards the relative localization problem in sensor networks. We study a randomized algorithm, which is based on input-driven consensus dynamics and involves pairwise "g…