260 citations · 879 across the 60 of their papers we have counts for
66 papers
Nested stochastic block model for simultaneously clustering networks and nodes
Nathaniel Josephs, Arash A. Amini, Marina Paez +1
We introduce the nested stochastic block model (NSBM) to cluster a collection of networks while simultaneously detecting communities within each network. NSBM has several appealing…
Learning Nonlinear Couplings in Network of Agents from a Single Sample Trajectory
Arash Amini, Qiyu Sun, Nader Motee
We consider a class of stochastic dynamical networks whose governing dynamics can be modeled using a coupling function. It is shown that the dynamics of such networks can generate…
LapGM: A Multisequence MR Bias Correction and Normalization Model
Luciano Vinas, Arash A. Amini, Jade Fischer +1
A spatially regularized Gaussian mixture model, LapGM, is proposed for the bias field correction and magnetic resonance normalization problem. The proposed spatial regularizer give…
Carleman Linearization of Nonlinear Systems and Its Finite-Section Approximations
Arash Amini, Cong Zheng, Qiyu Sun +1
The Carleman linearization is one of the mainstream approaches to lift a finite-dimensional nonlinear dynamical system into an infinite-dimensional linear system with the promise o…
Target alignment in truncated kernel ridge regression
Arash A. Amini, Richard Baumgartner, Dai Feng
Kernel ridge regression (KRR) has recently attracted renewed interest due to its potential for explaining the transient effects, such as double descent, that emerge during neural n…
Complex-Order Scale-Invariant Operators and Self-Similar Processes
Arash Amini, Julien Fageot, Michael Unser
Derivatives and integration operators are well-studied examples of linear operators that commute with scaling up to a fixed multiplicative factor; i.e., they are scale-invariant. F…