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GBNLREG(1) User Commands GBNLREG(1)

NAME

gbnlreg - Non linear regression

SYNOPSIS

gbnlreg [options] <function definition>

DESCRIPTION

Non linear least square regression. Read data in columns (X_1 .. X_N). The model is specified by a function f(x1,x2...) using variables names x1,x2,..,xN for the first, second .. N-th column of data. f(x1,x2,...) are assumed i.i.d.

OPTIONS

-O
type of output (default 0)
0
parameters
1
parameters and errors
2
<variables> and residuals
3
parameters and variance matrix
4
parameters, errors and s-scores
-V
variance matrix estimation (default 0)
0
<gradF gradF^t>
1
< J^{-1} >
2
< H^{-1} >
3
< H^{-1} J H^{-1} >
-v
verbosity level (default 0)
0
just results
1
comment headers
2
summary statistics
3
covariance matrix
4
minimization steps
5
model definition
-M
estimation method (default 0)
0
ordinary least square (OLS)
1
minimum absolute deviation (MAD)
2
asymmetric MAD
-e
minimization tolerance (default 1e-5)
-i
minimization max iterations (default 500)
-E
restart accuracy (default 1e-5, ignored with option -M 0)
-I
restart max iterations (default 2000, ignored with option -M 0)
-F
input fields separators (default " \t")
-h
this help

AUTHOR

Written by Giulio Bottazzi

REPORTING BUGS

Report bugs to <gbutils@googlegroups.com>

Package home page <http://cafim.sssup.it/~giulio/software/gbutils/index.html>

COPYRIGHT

Copyright © 2001-2018 Giulio Bottazzi This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation;

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

October 2018 gbnlreg 6.0.beta2