An Accelerated Stochastic Algorithm for Solving the Optimal Transport Problem
An Accelerated Stochastic Algorithm for Solving the Optimal Transport Problem
复制标题
求解最优传输问题的加速随机算法
DOI:
10.48550/arxiv.2203.00813
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
X. Huo
中科院分区:
文献类型:
--
作者:
Yiling Xie;Yiling Luo;X. Huo
A primal-dual accelerated stochastic gradient descent with variance reduction algorithm (PDASGD) is proposed to solve linear-constrained optimization problems. PDASGD could be applied to solve the discrete optimal transport (OT) problem and enjoys the best-known computational complexity -- $\widetilde{\mathcal{O}}(n^2/\epsilon)$, where $n$ is the number of atoms, and $\epsilon>0$ is the accuracy. In the literature, some primal-dual accelerated first-order algorithms, e.g., APDAGD, have been proposed and have the order of $\widetilde{\mathcal{O}}(n^{2.5}/\epsilon)$ for solving the OT problem. To understand why our proposed algorithm could improve the rate by a factor of $\widetilde{\mathcal{O}}(\sqrt{n})$, the conditions under which our stochastic algorithm has a lower order of computational complexity for solving linear-constrained optimization problems are discussed. It is demonstrated that the OT problem could satisfy the aforementioned conditions. Numerical experiments demonstrate superior practical performances of the proposed PDASGD algorithm for solving the OT problem.
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DOI:
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发表时间:
2021
期刊:
Proceedings of Machine Learning Research
影响因子:
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作者:
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通讯作者:
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DOI:
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DOI:
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期刊:
J. Mach. Learn. Res.
影响因子:
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DOI:
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发表时间:
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期刊:
ArXiv
影响因子:
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