# levmar: An implementation of the Levenberg-Marquardt algorithm

The Levenberg-Marquardt algorithm is an iterative technique that finds a local minimum of a function that is expressed as the sum of squares of nonlinear functions. It has become a standard technique for nonlinear least-squares problems and can be thought of as a combination of steepest descent and the Gauss-Newton method. When the current solution is far from the correct one, the algorithm behaves like a steepest descent method: slow, but guaranteed to converge. When the current solution is close to the correct solution, it becomes a Gauss-Newton method.

Optional box- and linear constraints can be given. Both single and double precision floating point types are supported.

The actual algorithm is implemented in a
C library which is
bundled with `bindings-levmar`

which this package depends on.

A note regarding the license:

This library depends on `bindings-levmar`

which is bundled together
with a C library which falls under the GPL. Please be aware of this
when distributing programs linked with this library. For details see
the description and license of `bindings-levmar`

.

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Versions | 0.1, 0.2, 0.2.1, 0.3, 1.0, 1.1, 1.1.0.1, 1.2, 1.2.0.1, 1.2.1, 1.2.1.1, 1.2.1.2, 1.2.1.3, 1.2.1.4, 1.2.1.5, 1.2.1.6, 1.2.1.7, 1.2.1.8 |
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Dependencies | base (>=3 && <5), bindings-levmar (>=1.1), hmatrix (>=0.12), vector (>=0.8) [details] |

License | BSD-3-Clause |

Copyright | (c) 2009 - 2014 Roel van Dijk & Bas van Dijk |

Author | Roel van Dijk <vandijk.roel@gmail.com> Bas van Dijk <v.dijk.bas@gmail.com> |

Maintainer | Roel van Dijk <vandijk.roel@gmail.com> Bas van Dijk <v.dijk.bas@gmail.com> |

Category | Numerical, Math |

Home page | https://github.com/basvandijk/levmar |

Bug tracker | https://github.com/basvandijk/levmar/issues |

Source repo | head: git clone git://github.com/basvandijk/levmar.git |

Uploaded | by BasVanDijk at Mon May 7 06:39:40 UTC 2018 |

Distributions | NixOS:1.2.1.8 |

Downloads | 5643 total (58 in the last 30 days) |

Rating | (no votes yet) [estimated by rule of succession] |

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Status | Docs available [build log] Last success reported on 2018-05-07 [all 1 reports] Hackage Matrix CI |

## Downloads

- levmar-1.2.1.8.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)