A Riemannian nonmonotone spectral method for self-adjoint tangent vector field

A Riemannian nonmonotone spectral method for self-adjoint tangent vector field
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自伴切向量场的黎曼非单调谱方法

DOI:
10.1016/j.apnum.2020.11.005
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发表时间:
2021-03
影响因子:
2.8
通讯作者:
Li Wei
Li Wei
中科院分区:
数学2区
文献类型:
--
作者:
Yao Teng-Teng;Lu Fang;Li Wei

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根据具体问题的需要,例如无约束和等式约束的Rayleigh商问题,我们考虑了黎曼流形上切向量场的零点问题。更准确地说,本文主要研究自伴切向量场。充分利用切向量场的自伴性,提出了一种有效的求解该问题的黎曼谱方法,该方法采用非单调线搜索,无需求导。通过分析,我们发现该算法在一定条件下可以达到全局收敛,这是一个很好的结果。文末给出了算法的数值试验结果。我们发现,该算法不仅在速度和时间上有所改善,而且适用于大规模问题。
Based on the requirement of specific problems, for instance unconstrained and equality-constrained Rayleigh quotient problems, we consider the problem of finding zeros of a tangent vector field on Riemannian manifold. More precisely, we focus on the study of self-adjoint tangent vector field in this paper. By making full use of the self-adjointness property of the tangent vector field, we propose an effective Riemannian spectral method to solve the problem, which is derivative free with nonmonotone line search employed. Through analysis, we find that the algorithm can achieve global convergence under certain conditions, which is a good result. At the end of the paper, numerical test results of the algorithm are given. We find that the proposed algorithm not only has an improvement in speed and time, but also is applicable to large-scale problems.
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