• Corpus ID: 17165019

# Preconditioning in Expectation

@article{Cohen2014PreconditioningIE,
title={Preconditioning in Expectation},
author={Michael B. Cohen and Rasmus Kyng and Jakub W. Pachocki and Richard Peng and Anup B. Rao},
journal={ArXiv},
year={2014},
volume={abs/1401.6236}
}
• Published 23 January 2014
• Computer Science
• ArXiv
We show that preconditioners constructed by random sampling can perform well without meeting the standard requirements of iterative methods. When applied to graph Laplacians, this leads to ultra-sparsifiers that in expectation behave as the nearly-optimal ones given by [Kolla-Makarychev-Saberi-Teng STOC10]. Combining this with the recursive preconditioning framework by [Spielman-Teng STOC04] and improved embedding algorithms, this leads to algorithms that solve symmetric diagonally dominant…
8 Citations

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