257 citations · 1k across the 75 of their papers we have counts for
5 papers · 1 filter
Exact Blind Community Detection from Signals on Multiple Graphs
T. Mitchell Roddenberry, Michael T. Schaub, Hoi-To Wai +1
Networks and data supported on graphs have become ubiquitous in the sciences and engineering. This paper studies the 'blind' community detection problem, where we seek to infer the…
Spectral partitioning of time-varying networks with unobserved edges
Michael T. Schaub, Santiago Segarra, Hoi-To Wai
We discuss a variant of `blind' community detection, in which we aim to partition an unobserved network from the observation of a (dynamical) graph signal defined on the network. W…
Blind Community Detection from Low-rank Excitations of a Graph Filter
Hoi-To Wai, Santiago Segarra, Asuman E. Ozdaglar +2
This paper considers a new framework to detect communities in a graph from the observation of signals at its nodes. We model the observed signals as noisy outputs of an unknown net…
Active Sensing of Social Networks
Hoi-To Wai, Anna Scaglione, Amir Leshem
This paper develops an active sensing method to estimate the relative weight (or trust) agents place on their neighbors' information in a social network. The model used for the reg…
The Social System Identification Problem
Hoi-To Wai, Anna Scaglione, Amir Leshem
The focus of this paper is modeling what we call a Social Radar, i.e. a method to estimate the relative influence between social agents, by sampling their opinions and as they evol…