5 papers
Accurate Density of States Estimation: A Comparative Study
Dong Min Roh, Chao Yang
We study density of states (DOS) estimation for large sparse real symmetric matrices by fitting the cumulative density of states (CDOS) and differentiating the fit. We use a stocha…
Lanczos Method for QRPA Strength Functions in Atomic Nuclei
Dong Min Roh, Chao Yang, Jonathan Engel +1
We present a symmetric Lanczos method for computing charge-changing QRPA strength functions in atomic nuclei. Starting from the finite-amplitude-method formulation of the QRPA line…
Accelerating Eigenvalue Computation for Nuclear Structure Calculations via Perturbative Corrections
Dong Min Roh, Esmond Ng, Chao Yang +3
We present a new method for computing the lowest few eigenvalues and the corresponding eigenvectors of a nuclear many-body Hamiltonian represented in a truncated configuration inte…
A Self-Consistent Field Solution for Robust Common Spatial Pattern Analysis
Dong Min Roh, Zhaojun Bai
The common spatial pattern analysis (CSP) is a widely used signal processing technique in brain-computer interface (BCI) systems to increase the signal-to-noise ratio in electroenc…
A Bi-level Nonlinear Eigenvector Algorithm for Wasserstein Discriminant Analysis
Dong Min Roh, Zhaojun Bai, Ren-Cang Li
Much like the classical Fisher linear discriminant analysis (LDA), the recently proposed Wasserstein discriminant analysis (WDA) is a linear dimensionality reduction method that se…