GBNLREG(1)

📦
version 6.3 · 2 versions
  • 6.3 · debian bookworm, debian trixie, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking (latest)
  • 6.0 · ubuntu jammy
, in debian bookworm, debian trixie, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

✨ GBNLREG — bestie edition ✨

okay so this is gbnlreg(1), a User Commands page, and it's literally the moment your data stops being linear and starts being interesting. sit down, hydrate, we're doing nonlinear regression 💖

🌸 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.

So like — your data comes in as columns, X_1 all the way to X_N, and you hand this program a function f(x1,x2...). Those x1,x2,..,xN names are just stand-ins for the 1st, 2nd, … N-th column of your data, no cap. And f(x1,x2,...) is assumed i.i.d. — that's the vibe you're signing up for. 👑

✨ 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
heads up bestie: -E and -I are ignored when you're running with option -M 0 — they just do nothing there, no drama, but don't be surprised 🫶

🫶 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 © 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.

and that's the whole page, bestie 🧚✨ this was gbnlreg version 6.2, from June 2021 — go fit something nonlinear and slay 💖💅

📦 where this page comes from