An Empirical Study of Cycle Toggling Based Laplacian Solvers
An Empirical Study of Cycle Toggling Based Laplacian Solvers
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基于循环切换的拉普拉斯求解器的实证研究
DOI:
10.1137/1.9781611974690.ch4
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Xu, Shen Chen
中科院分区:
文献类型:
--
作者:
Deweese, Kevin;Gilbert, John R;Miller, Gary;Peng, Richard;Xu, Hao Ran;Xu, Shen Chen
We study the performance of linear solvers for graph Laplacians based on the combinatorial cycle adjustment methodology proposed by [Kelner-Orecchia-Sidford-Zhu STOC-13]. The approach finds a dual flow solution to this linear system through a sequence of flow adjustments along cycles. We study both data structure oriented and recursive methods for handling these adjustments.The primary difficulty faced by this approach, updating and querying long cycles, motivated us to study an important special case: instances where all cycles are formed by fundamental cycles on a length n path. Our methods demonstrate significant speedups over previous implementations, and are competitive with standard numerical routines.
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DOI:
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Information Technology Convergence and Services
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