2017
DOI: 10.1016/j.laa.2017.07.004
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A randomized algorithm for approximating the log determinant of a symmetric positive definite matrix

Abstract: We introduce a novel algorithm for approximating the logarithm of the determinant of a symmetric positive definite (SPD) matrix. The algorithm is randomized and approximates the traces of a small number of matrix powers of a specially constructed matrix, using the method of Avron and Toledo [AT11]. From a theoretical perspective, we present additive and relative error bounds for our algorithm. Our additive error bound works for any SPD matrix, whereas our relative error bound works for SPD matrices whose eigen… Show more

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Cited by 47 publications
(56 citation statements)
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References 19 publications
(29 reference statements)
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“…They do not provide rigorous bounds as we provide for our method. Boutsidis et al [6] use a similar scheme based on Taylor expansion for approximating the log-determinant, and do provide rigorous bounds. Nevertheless, our experiments demonstrate that our Chebyshev interpolation based method provides superior accuracy.…”
Section: Related Workmentioning
confidence: 99%
“…They do not provide rigorous bounds as we provide for our method. Boutsidis et al [6] use a similar scheme based on Taylor expansion for approximating the log-determinant, and do provide rigorous bounds. Nevertheless, our experiments demonstrate that our Chebyshev interpolation based method provides superior accuracy.…”
Section: Related Workmentioning
confidence: 99%
“…In contrast, our proposed entropic approach implicitly encodes the constraint that densities are necessarily positive. Given equivalent moment information, we achieve competitive results on matrices obtained from the SuiteSparse Matrix Collection [11] which consistently outperform competing approximations to the log-determinant [12,7].…”
Section: Introductionmentioning
confidence: 99%
“…Our work has been inspired by the approach of Boutsidis, Drineas, Kambadur, Kontopoulou, and Zouzias [1] that uses Taylor expansion for log(1 + x) to approximate the log determinant. The coefficients of this expansion have the same sign and thus the Hutchinson estimator [3] can be applied to each partial sum of this expansion.…”
Section: Our Results and Related Workmentioning
confidence: 99%