Learning interaction kernels in mean-field equations of 1st-order systems of interacting particles
Learning interaction kernels in mean-field equations of 1st-order systems of interacting particles
复制标题
学习相互作用粒子一阶系统平均场方程中的相互作用核
DOI:
10.1137/20m1377072
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
F. Lu
中科院分区:
文献类型:
--
作者:
Quanjun Lang;F. Lu
We introduce a nonparametric algorithm to learn interaction kernels of mean-field equations for 1st-order systems of interacting particles. The data consist of discrete space-time observations of the solution. By least squares with regularization, the algorithm learns the kernel on data-adaptive hypothesis spaces efficiently. A key ingredient is a probabilistic error functional derived from the likelihood of the mean-field equation's diffusion process. The estimator converges, in a reproducing kernel Hilbert space and an L2 space under an identifiability condition, at a rate optimal in the sense that it equals the numerical integrator's order. We demonstrate our algorithm on three typical examples: the opinion dynamics with a piecewise linear kernel, the granular media model with a quadratic kernel, and the aggregation-diffusion with a repulsive-attractive kernel.
影响因子:
1.4
作者:
Zhongyan Li;F. Lu;M. Maggioni;Sui Tang;C. Zhang
通讯作者:
Zhongyan Li;F. Lu;M. Maggioni;Sui Tang;C. Zhang
影响因子:
3
作者:
Lu, Fei;Maggioni, Mauro;Tang, Sui
通讯作者:
Tang, Sui
DOI:
10.1073/pnas.1822012116
发表时间:
2019
影响因子:
11.1
作者:
Lu, Fei;Zhong, Ming;Tang, Sui;Maggioni, Mauro
通讯作者:
Maggioni, Mauro