Comments (7)
I'm not sure where it should be located. Levenberg-Marquardt isn't the same as the other methods in optimize as it only solves a specific kind of problem. It may still belong in the base package, but I'm not sure.
from optimize.
Maybe optimize/nlls? Otherwise maybe in addition to local we could have another function.
from optimize.
I would prefer another function (LeastSquares
?) taking another kind of problem (LeastSquaresProblem
or LSProblem
?).
from optimize.
I wanted to check in on the status of this issue (and about curve fitting in general in the Go environment).
The reason I'm asking is that I'm currently working on a Go-based affine-invariant Markov chain Monte Carlo sampler (similar to emcee) for one of my own projects. If you guys are interested, this could be used as a backend for general purpose fitting routines.
(MCMC doesn't fill exactly the same niche as LM, so it would probably be best to have an LM implementation, too.)
from optimize.
AFAIK, nobody is actively working on this.
I still think it is indeed worthy of having in the gonum
toolkit.
Feel free to either open a PR or drop a message on the gonum
mailing list.
from optimize.
@phil-mansfield FYI, I have started a design investigation at go-hep/fit with discussion on the gonum mailing list: https://groups.google.com/forum/#!topic/gonum-dev/AGekBtNCfJ8.
from optimize.
Closing because there is now gonum/gonum#295 in the new repository.
from optimize.
Related Issues (20)
- Change from Function et al. interfaces + magic to input functions struct HOT 5
- Clearly define meaning of the various iteration types HOT 5
- Make optimize silent by default
- Method does not need ProblemInfo HOT 1
- LinesearchMethod.Iterate() is subtly wrong HOT 6
- Better name for ErrNonNegativeStepDirection
- Linesearchers should check function value before asking for gradient HOT 8
- Linesearchers should test function decrease to within a tolerance HOT 2
- Pass a copy of X to evaluation routines HOT 2
- Change the order of arguments for evaluation routines like Grad() and Hess()
- Remove Linesearcher.Finished()
- Change FunConst and GradConst to DecreaseFactor and CurvatureFactor
- [question] MajorIterations settings HOT 4
- optimize: Add CMA-ES optimization algorithm HOT 3
- optimize: Repo description should not end with a "." HOT 4
- optimize: NewPrinter should accept an io.Writer HOT 1
- optimize: allow constrained optimization HOT 6
- Update of OptLoc on every iteration causes flaky optimization runs HOT 11
- Statuser docs are not accurate
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from optimize.