-
博主你好。我在读文章的时候产生了一个疑惑。
求雅各比矩阵的时候你是针对扰动求的雅各比,可是我个人理解是如果求解非线性最小二乘问题,雅各比矩阵应该是针对我们想求解的状态的。即我觉得求导应该针对q而不是delta_alpha。
拿ceres里的例子来讲,比如它的field_of_experts.cc里Evaluate()函数中residual等于
`residuals[0] += filter_…
-
### 🐛 Describe the bug
`cat` fails the gradient computation in forward mode but succeeds in reverse mode
```py
import torch
from torch.autograd.functional import jacobian
torch.manual_seed(42…
-
All newton methods class require a function to calculate jacobian matrix. In many cases, derivative of function is not analytically written. 3 options can be chose by user.
- analytic formula
- finite…
-
Currently dual shape functions are computed once for a single element, then reused. For 3D mortar the dual shape functions depend on element deformation so need to be recomputed on each element.
A…
-
Thanks for your work ! Here are some questions:
* About formula 4 and your implementation.
![image](https://user-images.githubusercontent.com/6824141/79460044-d9d5c700-8026-11ea-99b9-c160903a550c.pn…
-
Thanks for your impressive work!
I have some question about **out_jac** , Why this argument makes **project_a** and **project_b** evaluate differently
-
```julia
julia> using ComponentArrays, Zygote
julia> p = (; a = ones(2), b = zeros(2)) |> ComponentArray
ComponentVector{Float64}(a = [1.0, 1.0], b = [0.0, 0.0])
julia> Zygote.gradient(x -> su…
-
Joachim Geiger has reported a crash when running with multiple processors. The following input files
[Cases.zip](https://github.com/ORNL-Fusion/PARVMEC/files/5851163/Cases.zip)
show the behavior. `…
-
### Description
Data reconcilliation is evaluating the DAE which can fail from time to time, e.g. when a non-linear equation system can't be solved or if some equation is dividing by zero. Currentl…
-
Hey,
I'm working on a project where I build something similar to the cartesian impedance controller. So I started to try to understand how this example is working. However I have a hard time underst…