arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2109.01897math.NAcs.NAmath.PR
收藏

多种群随机相互作用粒子系统的随机批处理方法

Random-batch method for multi-species stochastic interacting particle systems

Esther S. Daus, Markus Fellner, Ansgar Jüngel

摘要:

提出了一种多种群相互作用粒子系统的随机批处理方法,推广了S。金湖,澳-地李和J- G. Liu [J. Comput. 400(2020),108877]。算法的思想是在每个时间步将粒子群随机分成小批,然后在批内演化每个粒子的相互作用,直到下一个时间步。这将计算成本降低了一个数量级,同时保持一定的精度。证明了误差过程的$L^2$误差表现为时间步长的平方根,在时间上是一致的,从而提供了格式的收敛性。数值效率进行了测试的一些例子,和数值模拟的意见动力学在一个分层的公司,由工人,经理和CEO,提出。

英文摘要:

A random-batch method for multi-species interacting particle systems is proposed, extending the method of S. Jin, L. Li, and J.-G. Liu [J. Comput. Phys. 400 (2020), 108877]. The idea of the algorithmus is to randomly divide, at each time step, the ensemble of particles into small batches and then to evolve the interaction of each particle within the batches until the next time step. This reduces the computational cost by one order of magnitude, while keeping a certain accuracy. It is proved that the $L^2$ error of the error process behaves like the square root of the time step size, uniformly in time, thus providing the convergence of the scheme. The numerical efficiency is tested for some examples, and numerical simulations of the opinion dynamics in a hierarchical company, consisting of workers, managers, and CEOs, are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑