Tagged Questions
0
votes
2answers
103 views
Checking for error in conjugate gradient algorithm
What is a good way to check if the any numerical error is occured in conjugate gradient algorithm. Additionally why is it not suggested to check error by checking A-orthogonality of search direction ...
5
votes
2answers
263 views
How to remove Rigid Body Motions in Linear Elasticity?
I want to solve $K u = b$ where $K$ is my stiffness matrix. However some constraints may be missing an therefore some rigid body motion may be still present in the system (due to eigenvalue zero). ...
1
vote
1answer
113 views
Gradient descent to stationary, or accumulation point
I recently came across the notion of an accumulation point as a result of a certain gradient descent variation. The following definition was found:
An accumulation point $P$ is such that there are an ...
