3 papers
math.NA2026
Fast and Accurate CP-HIFI Tensor Decompositions: Exploiting Kronecker Structure
Johannes J. Brust, Tamara G. Kolda
Tensor decompositions are a fundamental tool in scientific computing and data analysis. In many applications -- such as simulation data on irregular grids, surrogate modeling for p…
math.NA2025
Fast and Accurate SVD-Type Updating in Streaming Data
Johannes J. Brust, Michael A. Saunders
For a datastream, the change over a short interval is often of low rank. For high throughput information arranged in matrix format, recomputing an optimal SVD approximation after e…
math.NA2024
Structured Sketching for Linear Systems
Johannes J Brust, Michael A Saunders
For linear systems we develop iterative algorithms based on a sketch-and-project approach. By using judicious choices for the sketch, such as the history of residuals, we de…