2 papers
math.NA2019
Multigrid deflation for Lattice QCD
Eloy Romero, Andreas Stathopoulos, Kostas Orginos
Computing the trace of the inverse of large matrices is typically addressed through statistical methods. Deflating out the lowest eigenvectors or singular vectors of the matrix red…
hep-lat2013
Hierarchical probing for estimating the trace of the matrix inverse on toroidal lattices
Andreas Stathopoulos, Jesse Laeuchli, Kostas Orginos
The standard approach for computing the trace of the inverse of a very large, sparse matrix is to view the trace as the mean value of matrix quadratures, and use the Monte Carl…