Aleksandros Sobczyk  Aleksandros Sobczyk photo         

contact information

Predoctoral Researcher
Zurich Research Laboratory, Zurich, Switzerland
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2022

Approximate Euclidean lengths and distances beyond Johnson-Lindenstrauss
Aleksandros Sobczyk, Mathieu Luisier
arXiv, arXiv, 2022
Abstract

Pylspack: Parallel Algorithms and Data Structures for Sketching, Column Subset Selection, Regression and Leverage Scores
Aleksandros Sobczyk, Efstratios Gallopoulos
ACM Trans. Math. Softw., Association for Computing Machinery, 2022
Abstract   Just Accepted


2021

Estimating leverage scores via rank revealing methods and randomization
Aleksandros Sobczyk, Efstratios Gallopoulos
SIAM Journal on Matrix Analysis and Applications 42(3), 1199-1228, Society for Industrial and Applied Mathematics, 2021
Abstract


2015

A general tridiagonal solver for coprocessors: Adapting g-Spike for the Intel Xeon Phi
Ioannis E. Venetis, Alexandros Sobczyk, Alexandros Kouris, Alexandros Nakos, Nikolaos Nikoloutsakos, Efstratios Gallopoulos
Parallel Computing: On the Road to Exascale, pp. 371-380, IOS Press, 2015
Abstract

A direct tridiagonal solver based on Givens rotations for GPU architectures
I.E. Venetis, A. Kouris, A. Sobczyk, E. Gallopoulos, A.H. Sameh
Parallel Computing 49(C), 101-116, Elsevier, 2015
Abstract