## digitalmars.D.announce - mir-optim v0.0.1: betterC nonlinear least squares

- 9il (5/5) Jul 09 2018 https://github.com/libmir/mir-optim
- jmh530 (4/9) Jul 09 2018 It looks like the docs are not correctly handling the parameters
- Shigeki Karita (2/7) Jul 09 2018 great! do you have any plans of algorithms to be supported?
- 9il (4/13) Jul 09 2018 The algorigbms from https://github.com/JuliaNLSolvers are good

https://github.com/libmir/mir-optim This work has been sponsored by Symmetry Investments and Kaleidic Associates. http://symmetryinvestments.com https://github.com/kaleidicassociates

Jul 09 2018

On Monday, 9 July 2018 at 13:54:17 UTC, 9il wrote:https://github.com/libmir/mir-optim This work has been sponsored by Symmetry Investments and Kaleidic Associates. http://symmetryinvestments.com https://github.com/kaleidicassociatesIt looks like the docs are not correctly handling the parameters you have in the struct. https://mir-optim.dpldocs.info/mir.least_squares.LeastSquaresLM.html

Jul 09 2018

On Monday, 9 July 2018 at 13:54:17 UTC, 9il wrote:https://github.com/libmir/mir-optim This work has been sponsored by Symmetry Investments and Kaleidic Associates. http://symmetryinvestments.com https://github.com/kaleidicassociatesgreat! do you have any plans of algorithms to be supported?

Jul 09 2018

On Monday, 9 July 2018 at 21:52:22 UTC, Shigeki Karita wrote:On Monday, 9 July 2018 at 13:54:17 UTC, 9il wrote:The algorigbms from https://github.com/JuliaNLSolvers are good candidates. No plans to implement them for now, but PRs are wellcome.

Jul 09 2018

On Tuesday, 10 July 2018 at 02:10:56 UTC, 9il wrote:The algorigbms from https://github.com/JuliaNLSolvers are good candidates. No plans to implement them for now, but PRs are wellcome.Dlangscience has headers for the nlopt and glpk C libraries that I've used in the past. ipopt is another one that I've used, but I don't think there's a D interface. IMHO, you'd need a good reason to implement all of the functionality of a non-linear optimizer on your own. Simple linear and quadratic programming are probably a useful start, but beyond that the ability to interface with C/Fortran libraries goes a long way.

Jul 10 2018

On Tuesday, 10 July 2018 at 02:10:56 UTC, 9il wrote:The algorigbms from https://github.com/JuliaNLSolvers are good candidates. No plans to implement them for now, but PRs are wellcome.Another type of functionality that would be useful: https://www.mathworks.com/help/matlab/ref/fzero.html This can be done with a non-linear least squares, but I don't think that's the most efficient method.

Jul 13 2018

On Friday, 13 July 2018 at 16:20:30 UTC, jmh530 wrote:On Tuesday, 10 July 2018 at 02:10:56 UTC, 9il wrote:D's findRoot probably is the world's most efficient and robust implementation. For single initial point fzero we can be implemented as IEEE set binary search of second initial point x1 such that sign(f(x0)) != sign(f(x1)) plus D's findRoot.The algorigbms from https://github.com/JuliaNLSolvers are good candidates. No plans to implement them for now, but PRs are wellcome.Another type of functionality that would be useful: https://www.mathworks.com/help/matlab/ref/fzero.html This can be done with a non-linear least squares, but I don't think that's the most efficient method.

Jul 14 2018