EikoNet: Solving the Eikonal Equation With Deep Neural Networks
EikoNet: Solving the Eikonal Equation With Deep Neural Networks
复制标题
EikoNet:用深度神经网络求解 Eikonal 方程
DOI:
10.1109/tgrs.2020.3039165
复制
发表时间:
2020
影响因子:
8.2
通讯作者:
Ross, Zachary E.
中科院分区:
文献类型:
--
作者:
Smith, Jonathan D.;Azizzadenesheli, Kamyar;Ross, Zachary E.
The recent deep learning revolution has created enormous opportunities for accelerating compute capabilities in the context of physics-based simulations. In this article, we propose EikoNet, a deep learning approach to solving the Eikonal equation, which characterizes the first-arrival-time field in heterogeneous 3-D velocity structures. Our grid-free approach allows for rapid determination of the travel time between any two points within a continuous 3-D domain. These travel time solutions are allowed to violate the differential equation—which casts the problem as one of optimization—with the goal of finding network parameters that minimize the degree to which the equation is violated. In doing so, the method exploits the differentiability of neural networks to calculate the spatial gradients analytically, meaning that the network can be trained on its own without ever needing solutions from a finite-difference algorithm. EikoNet is rigorously tested on several velocity models and sampling methods to demonstrate robustness and versatility. Training and inference are highly parallelized, making the approach well-suited for GPUs. EikoNet has low memory overhead and further avoids the need for travel-time lookup tables. The developed approach has important applications to earthquake hypocenter inversion, ray multipathing, and tomographic modeling, as well as to other fields beyond seismology where ray tracing is essential.
登录
查看更多内容
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
N. Heybeli;F. Oktar;S. Ozyazgan;G. Akkan;S. Ozsoy
通讯作者:
S. Ozsoy
影响因子:
4
作者:
M. Noack;S. Clark
通讯作者:
S. Clark
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
Shamita Das
通讯作者:
Shamita Das
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
N. Rawlinson;M. Sambridge;J. Hauser
通讯作者:
J. Hauser
DOI:
10.1523/jneurosci.0153-18.2018
发表时间:
2018
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Srinivasan,Shyam;Greenspan,RalphJ;Stevens,CharlesF;Grover,Dhruv
通讯作者:
Grover,Dhruv