A Stochastic Homotopy Tracking Algorithm for Parametric Systems of Nonlinear Equations
A Stochastic Homotopy Tracking Algorithm for Parametric Systems of Nonlinear Equations
复制标题
非线性方程组参数系统的随机同伦跟踪算法
DOI:
10.1007/s10915-021-01506-y
复制
发表时间:
2021
影响因子:
2.5
通讯作者:
Zheng, Chunyue
中科院分区:
文献类型:
--
作者:
Hao, Wenrui;Zheng, Chunyue
The homotopy continuation method has been widely used in solving parametric systems of nonlinear equations. But it can be very expensive and inefficient due to singularities during the tracking even though both start and end points are non-singular. The current tracking algorithms focus on the adaptivity of the stepsize by estimating the distance to the singularities but cannot avoid these singularities during the tracking. We present a stochastic homotopy tracking algorithm that perturbs the original parametric system randomly each step to avoid the singularities. We then prove that the stochastic solution path introduced by this new method is still closed to the original solution path theoretically. Moreover, several homotopy examples have been tested to show the efficiency of the stochastic homotopy tracking method.
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影响因子:
1.9
作者:
Hao, Wenrui;Xue, Chuan
通讯作者:
Xue, Chuan
影响因子:
3.1
作者:
Wang, Yingwei;Hao, Wenrui;Lin, Guang
通讯作者:
Lin, Guang
DOI:
10.1016/j.jcp.2013.05.008
发表时间:
2013-10
期刊:
J. Comput. Phys.
影响因子:
--
作者:
Wenrui Hao;J. Hauenstein;Chi-Wang Shu;A. Sommese;Zhiliang Xu;Yong-Tao Zhang
通讯作者:
Wenrui Hao;J. Hauenstein;Chi-Wang Shu;A. Sommese;Zhiliang Xu;Yong-Tao Zhang
DOI:
10.1098/rspa.2019.0662
发表时间:
2019
期刊:
Physical and Engineering Sciences
影响因子:
--
作者:
Chen, Qipin;Hao, Wenrui
通讯作者:
Hao, Wenrui
DOI:
10.1007/978-3-319-96418-8_4
发表时间:
2018
期刊:
Mathematical Software – ICMS 2018
影响因子:
--
作者:
Bates, Dan;Brake, Danielle;Niemerg, Matt
通讯作者:
Niemerg, Matt