Timeline for Solving for an operator by minimization
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| May 5, 2012 at 19:04 | comment | added | Pait | There are many pitfalls in approximating derivatives by finite differences, and there is a growing literature on alternatives; please see my answer below. | |
| May 4, 2012 at 18:25 | comment | added | Michael Renardy | I think the problem is that $\tilde O(x,y)$ is not available in a form where one could analytically calculate derivatives of it. So these will have to be approximated by finite differences, regardless whether the solution is direct (e.g. by Newton's method) or by minimization. However, packages that can do an optimization problem in two variables, even if analytical derivatives of the function to be minimized are unavailable, are not hard to find. | |
| May 4, 2012 at 18:16 | history | answered | Robert Israel | CC BY-SA 3.0 |