Sampling matrices from Harish-Chandra–Itzykson–Zuber densities with applications to Quantum inference and differential privacy
Sampling matrices from Harish-Chandra–Itzykson–Zuber densities with applications to Quantum inference and differential privacy
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从 Harish-Chandra–Itzykson–Zuber 密度中采样矩阵及其在量子推理和差分隐私中的应用
DOI:
10.1145/3406325.3451094
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Vishnoi, Nisheeth K.
中科院分区:
文献类型:
--
作者:
Leake, Jonathan;McSwiggen, Colin;Vishnoi, Nisheeth K.
Given two Hermitian matricesYand Λ, the Harish-Chandra–Itzykson–Zuber (HCIZ) distribution is given by the densityeTr(UΛU*Y)with respect to the Haar measure on the unitary group. Random unitary matrices distributed according to the HCIZ distribution are important in various settings in physics and random matrix theory, but the problem of sampling efficiently from this distribution has remained open. We present two algorithms to sample matrices from distributions that are close to the HCIZ distribution. The first produces samples that are ξ-close in total variation distance, and the number of arithmetic operations required depends onpoly(log1/ξ). The second produces samples that are ξ-close in infinity divergence, but with apoly(1/ξ) dependence. Our results have the following applications: 1) an efficient algorithm to sample from complex versions of matrix Langevin distributions studied in statistics, 2) an efficient algorithm to sample from continuous maximum entropy distributions over unitary orbits, which in turn implies an efficient algorithm to sample a pure quantum state from the entropy-maximizing ensemble representing a given density matrix, and 3) an efficient algorithm for differentially private rank-kapproximation that comes with improved utility bounds fork>1.
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影响因子:
1.5
作者:
Chang, JT;Pollard, D
通讯作者:
Pollard, D
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
P. Slater
通讯作者:
P. Slater
影响因子:
0.8
作者:
Y. Neretin
通讯作者:
Y. Neretin
DOI:
--
发表时间:
2019-08
期刊:
arXiv: Rings and Algebras
影响因子:
--
作者:
Peter B. Denton;Stephen J. Parke;Terence Tao;Xining Zhang
通讯作者:
Peter B. Denton;Stephen J. Parke;Terence Tao;Xining Zhang
影响因子:
1.6
作者:
A. Guionnet
通讯作者:
A. Guionnet