DFO-GN: Derivative-Free Nonlinear Least-Squares Solver 
DFO-GN is a package for solving nonlinear least-squares minimisation, without requiring derivatives of the objective.
This is an implementation of the algorithm from our paper: A Derivative-Free Gauss-Newton Method, C. Cartis and L. Roberts, submitted (2017). For reproducibility of all figures in this paper, please feel free to contact the authors.
Note: we have released a newer package, called DFO-LS, which is an upgrade of DFO-GN to improve its flexibility and robustness to noisy problems. See here for details.
Documentation
See manual.pdf or here.
Requirements
DFO-GN requires the following software to be installed:
Additionally, the following python packages should be installed (these will be installed automatically if using pip, see Installation using pip):
Installation using pip
For easy installation, use pip as root:
$ [sudo] pip install --pre dfogn
If you do not have root privileges or you want to install DFO-GN for your private use, you can use:
$ pip install --pre --user dfogn
which will install DFO-GN in your home directory.
Note that if an older install of DFO-GN is present on your system you can use:
$ [sudo] pip install --pre --upgrade dfogn
to upgrade DFO-GN to the latest version.
Manual installation
The source code for DFO-GN is available on Github:
$ git clone https://github.com/numericalalgorithmsgroup/dfogn $ cd dfogn
DFO-GN is written in pure Python and requires no compilation. It can be installed using:
$ [sudo] pip install --pre .
If you do not have root privileges or you want to install DFO-GN for your private use, you can use:
$ pip install --pre --user .
instead.
Testing
If you installed DFO-GN manually, you can test your installation by running:
$ python setup.py test
Alternatively, the documentation provides some simple examples of how to run DFO-GN, which are also available in the examples directory.
1 maintainer
Metadata
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Release files for DFOGN 1.0.2
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| DFOGN-1.0.2.tar.gz | 34.9 kB | Details |
Release files / DFOGN-1.0.2.tar.gz
| Download URL | DFOGN-1.0.2.tar.gz |
|---|---|
| Size | 34.9 kB |
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