排序方式: 共有1条查询结果,搜索用时 0 毫秒
1
1.
The ensemble Kalman Filter (EnKF) applied to a simple fire propagation model by a nonlinear convection-diffusion-reaction
partial differential equation breaks down because the EnKF creates nonphysical ensemble members with large gradients. A modification
of the EnKF is proposed by adding a regularization term that penalizes large gradients. The method is implemented by applying
the EnKF formulas twice, with the regularization term as another observation. The regularization step is also interpreted
as a shrinkage of the prior distribution. Numerical results are given to illustrate success of the new method. 相似文献
1