Lee; Peng; Spielman (Inexact Laplacian Solver SDD Systems Solvers)

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Time Complexity

$O(n)$

Space Complexity

$O(n)$ words

(Derived: Uses an auxiliary sparse Cholesky decomposition which has $O(n)$ non-zero entries)

Description

Recursive algorithm with sparse Cholesky factorization of Laplacian

Approximate?

Approximate

Approximation Factor: The sparse Cholesky decomposition is a 2-approximation

Randomized?

No, deterministic

Model of Computation

Word RAM

Year

2015

Reference

https://arxiv.org/abs/1506.08204

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