Weighted Least Squares
LAPACK is a linear algebra library, based on LINPACK and EISPACK. LAPACK is written in Fortran77 and provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated...
Platforms: *nix
License: Freeware | Size: 10.6 MB | Download (117): LAPACK Download |
The Kernel-Machine Library is a freely available (released under the GPL) C++ library to promote the use and progress of kernel machines. It is both for academic use and for developing real world applications. The Kernel-Machine Library draws heavily from features of modern C++ such as template...
Platforms: *nix
License: Freeware | Size: 51.2 KB | Download (107): Kernel-Machine Library Download |
The GNU Scientific Library (GSL) is a numerical library for C and C++ programmers. It is free software under the GNU General Public License. GNU Scientific Library provides a wide range of mathematical routines such as random number generators, special functions and least-squares fitting. There...
Platforms: *nix
License: Freeware | Size: 2.3 MB | Download (99): GNU Scientific Library Download |
Statistics::LTU is an implementation of Linear Threshold Units. SYNOPSIS use Statistics::LTU; my $acr_ltu = new Statistics::LTU::ACR(3, 1); # 3 attributes, scaled $ltu->train([1,3,2], $LTU_PLUS); $ltu->train([-1,3,0], $LTU_MINUS); ... print "LTU looks like this:n"; $ltu->print;...
Platforms: *nix
License: Freeware | Size: 16.38 KB | Download (88): Statistics::LTU Download |
TAPPY was specially developed using the Python programming languages as a tidal analysis package.
It breaks down a record of water levels into the component sine waves. This Python program uses the least squares optimization and other functions in SciPy.
The focus is to make the most accurate...
Platforms: Windows
License: Freeware | Download (465): TAPPY Download |
Is a cross-platform software package for econometric analysis, written in the C programming language. It is free, open-source software. You may redistribute it and/or modify it under the terms of the GNU General Public License (GPL) as published by the Free Software Foundation. Features Easy...
Platforms: Windows
License: Freeware | Size: 17.2 MB | Download (635): gretl Portable Download |
SciCraft is an open source data analysis software developed in Python which allows you to access advanced mathematical functions through an easy-to-use graphical interface. Typical methods can be anything from areas like statistics, chemometrics and artificial intelligence and from languages like...
Platforms: Linux
License: Freeware | Size: 2.53 MB | Download (675): SciCraft for Linux Download |
If the signal frequency has to be guess, then it should be close to real frequency value. Requirements: - MATLAB 7.6 (R2008a)
Platforms: Windows, Mac, *nix, Matlab, Solaris
License: Freeware | Download (60): Four-Parameter Sinefit Download |
This package is a loosely defined collection of tools for application of Python in a laboratory environment. It consists of pure python protocol drivers for various useful devices, including: National Instrument DSTP protocol to interface Python to LabVIEW VXI-11 protocol, to allow python to talk...
Platforms: Windows, Mac, *nix, Python, BSD Solaris
License: Freeware | Download (59): Python Laboratory Operations Toolkit Download |
This applicationĀ is an open-source machine learning program for supervised classification of patterns (vectors of measurements). PCP implements the following algorithms and methods: - Fisher's linear discriminant - dimensionality reduction using Singular Value Decomposition - Principal...
Platforms: Windows, Mac, *nix, C/C++, BSD Solaris
License: Freeware | Download (59): PCP Application Download |
Functions are described briefly below:1) er_add: Add given tranfer functions.2) er_blaschke: Perform desired frequency transformation of digital filter using Blaschke products.3) er_conv: Multiply transfer functions.4) er_fconv: Convolve transfer functions in frequency domain.5) er_firlsinv: Find...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (39): Comprehensive DSP Toolbox Download |
In this submission we present the code of the Replacement Method (RM) [1-4] and Enhanced Replacement Method (ERM)[5], that were proposed some time ago by our group. Both methods produce linear regression QSPR-QSAR models that are quite close the FS (full search) ones with much less computational...
Platforms: Matlab
License: Freeware | Size: 215.04 KB | Download (47): QSAR/QSPR Search Algorithms Toolbox Download |
Title: Secrets of the Tide: Tide & Tidal Current Analysis and Predictions, Storm Surges, and Sea Level Trends. Horwood Publishing Limited, 2004.MATLAB programs for the analysis and prediction of ocean tides and tidal currents with graphic display of data and evaluation statistics.Two MATLAB...
Platforms: Matlab
License: Freeware | Size: 2.34 MB | Download (45): Secrets of the Tide: Tide & Tidal Current Analysis Download |
This is a fast and non-iterative ellipse fit. Usage: A = EllipseDirectFit(XY)Input: XY(n,2) is the array of coordinates of n points x(i)=XY(i,1), y(i)=XY(i,2) Output: A = [a b c d e f]' is the vector of coefficients of the equation of the best fitting ellipse: ax^2 + bxy + cy^2 + dx + ey + f =...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): Ellipse Fit (Direct method) Download |
How to fit a 2D Gaussian function to noisy data in Matlab? Or data with another number of dimensions and arbitrary fit function?It took me a while to find out how Matlab does this by the functions lsqcurvefit, fmincon or fminsearch. This project demonstrates how to use these functions to fit ND...
Platforms: Matlab
License: Freeware | Size: 30.72 KB | Download (54): Nonlinear fitting n-dimensional data with arbitrary functions Download |
A command-line peak fitting program for time-series signals, written as a self-contained Matlab function in a single m-file. Uses an non-linear optimization algorithm to decompose a complex, overlapping-peak signal into its component parts. The objective is to determine whether your signal can be...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): Peak Fitter Download |
I need to thank Duane Hanselman for suggesting this great idea.Fminspleas is a simple nonlinear least squares tool that fits regression models of the formY = a1*f1(X,C) + a2*f2(X,C) + ... + an*fn(X,C)X can be any array, so it works on multidimensionalproblems, and C is the set of only...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (41): Fminspleas Download |
FitChiTool provides an interface similar to the Curve Fitting Toolbox to the fitChiSquare function.This allows you to perform fits using chi-square when measurement errors are known on linear or nonlinear models. It allows allows you to perform fits with multiple independent (more than one x)...
Platforms: Matlab
License: Freeware | Size: 225.28 KB | Download (46): GUI for Generalized Nonlinear Non-analytic Chi-Square Fitting Download |
This program estimates the background (or baseline) of optical spectra by the polynomial minimizing a cost function. If the cost function was quadratic, the solution is the least squares estimation, which is not appropriate in this problem. Instead, we need to use of non-quadratic cost function...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): Background correction Download |
A fast customizable function for locating and measuring the peaks in noisy time-series signals. Adjustable parameters allow discrimination of "real" signal peaks from noise and background. Determines the position, height, and width of each peak by least-squares curve-fitting. It can find and...
Platforms: Matlab
License: Freeware | Size: 30.72 KB | Download (41): Peak finding and measurement Download |