octave-optim 1.0.6-1build1 (amd64 binary) in ubuntu lucid

 Unconstrained Non-linear Optimization toolkit for Octave, a numerical
 computation software. Included are functions to do linear least
 square fitting on data points, nonlinear regression using the
 Levenberg-Marquardt algorithm, Prony's method for non-linear exponent
 fitting and many more.
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 This Octave add-on package is part of the Octave-Forge project.