Connecting the dots: Identifying network structure via graph signal processing

G Mateos, S Segarra, AG Marques… - IEEE Signal Processing …, 2019 - ieeexplore.ieee.org
Network topology inference is a significant problem in network science. Most graph signal
processing (GSP) efforts to date assume that the underlying network is known and then …

Network topology inference from spectral templates

S Segarra, AG Marques, G Mateos… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
We address the problem of identifying the structure of an undirected graph from the
observation of signals defined on its nodes. Fundamentally, the unknown graph encodes …

Topology identification and learning over graphs: Accounting for nonlinearities and dynamics

GB Giannakis, Y Shen… - Proceedings of the …, 2018 - ieeexplore.ieee.org
Identifying graph topologies as well as processes evolving over graphs emerge in various
applications involving gene-regulatory, brain, power, and social networks, to name a few …

Anatomical attention guided deep networks for ROI segmentation of brain MR images

L Sun, W Shao, D Zhang, M Liu - IEEE transactions on medical …, 2019 - ieeexplore.ieee.org
Brain region-of-interest (ROI) segmentation based on structural magnetic resonance
imaging (MRI) scans is an essential step for many computer-aid medical image analysis …

Joint inference of multiple graphs from matrix polynomials

M Navarro, Y Wang, AG Marques, C Uhler… - Journal of machine …, 2022 - jmlr.org
Inferring graph structure from observations on the nodes is an important and popular
network science task. Departing from the more common inference of a single graph, we …

Learning graphs from smooth and graph-stationary signals with hidden variables

A Buciulea, S Rey, AG Marques - IEEE Transactions on Signal …, 2022 - ieeexplore.ieee.org
Network-topology inference from (vertex) signal observations is a prominent problem across
data-science and engineering disciplines. Most existing schemes assume that observations …

Network topology inference from non-stationary graph signals

R Shafipour, S Segarra, AG Marques… - … on Acoustics, Speech …, 2017 - ieeexplore.ieee.org
We address the problem of inferring a graph from nodal observations, which are modeled as
non-stationary graph signals generated by local diffusion dynamics that depend on the …

Mutual connectivity analysis of resting-state functional MRI data with local models

AM DSouza, AZ Abidin, U Chockanathan, G Schifitto… - NeuroImage, 2018 - Elsevier
Functional connectivity analysis of functional MRI (fMRI) can represent brain networks and
reveal insights into interactions amongst different brain regions. However, most connectivity …

Identifying the topology of undirected networks from diffused non-stationary graph signals

R Shafipour, S Segarra, AG Marques… - IEEE Open Journal of …, 2021 - ieeexplore.ieee.org
We address the problem of inferring an undirected graph from nodal observations, which are
modeled as non-stationary graph signals generated by local diffusion dynamics that depend …

State-space network topology identification from partial observations

M Coutino, E Isufi, T Maehara… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In this article, we explore the state-space formulation of a network process to recover from
partial observations the network topology that drives its dynamics. To do so, we employ …