47 citations · 50 across the 2 of their papers we have counts for
4 papers
Fast QR decomposition of HODLR matrices
Daniel Kressner, Ana Susnjara
The efficient and accurate QR decomposition for matrices with hierarchical low-rank structures, such as HODLR and hierarchical matrices, has been challenging. Existing structure-ex…
A fast spectral divide-and-conquer method for banded matrices
Ana Šušnjara, Daniel Kressner
Based on the spectral divide-and-conquer algorithm by Nakatsukasa and Higham [SIAM J. Sci. Comput., 35(3): A1325-A1349, 2013], we propose a new algorithm for computing all the eige…
Fast computation of spectral projectors of banded matrices
Daniel Kressner, Ana Susnjara
We consider the approximate computation of spectral projectors for symmetric banded matrices. While this problem has received considerable attention, especially in the context of l…
Accelerated filtering on graphs using Lanczos method
Ana Susnjara, Nathanael Perraudin, Daniel Kressner +1
Signal-processing on graphs has developed into a very active field of research during the last decade. In particular, the number of applications using frames constructed from graph…