Weighted

Calculates the geometric mean of a vector X (first argument) weighted by the values of another vector W (second argument). It may be already available, but I didn't find it, so here it is, just in case. Platforms: Matlab

The problem of fitting a straight line to data with uncertainties in both coordinates is solved using a weighted total least-squares algorithm. The parameters are transformed from the usual slope/y-axis intersection pair to slope angle and distance to the origin. The advantages of this are that... Platforms: Matlab

LOWESS- Locally Weighted Scatterplot Smoothing that does not require the statistical toolbox in matlab.This regression will work on linear and non-linear relationships between X and Y.Modifications:12/19/2008 - added upper and lower LOWESS smooths. These additional smooths show how the... Platforms: Matlab

The problem of fitting a straight line to data with uncertainties in both coordinates is solved using a weighted total least-squares algorithm. The parameters are transformed from the usual slope/y-axis intersection pair to slope angle and distance to the origin. The advantages of this are that... Platforms: Matlab

This file contains three m-file which estimate the Value at Risk (VaR) of portfolio composed of two stocks price by using Exponentially Weighted Moving Average.the main function is 'ewmaestimatevar'. For estimating VaR you should use this function. This function also sketch related diagram. at... Platforms: Matlab

This weighted nonlinear fit script fulfills the requirements of physicists, chemists and other quantative scientists, who need a fitting script for the everyday use. This script fits and creates nice plots with results and data automatically printed in a legend. It saves much time compared to... Platforms: Matlab

This widget selects a limited list of random post authors, weighted towards authors with more published posts. Give all of your post authors a chance to be featured in the sidebar, while encouraging more posting and rewarding authors who post most frequently.Easily configure numer of authors (or... Platforms: PHP

Statistics::LineFit module least squares line fit, weighted or unweighted. SYNOPSIS use Statistics::LineFit; $lineFit = Statistics::LineFit->new(); $lineFit->setData (@xValues, @yValues) or die "Invalid data"; ($intercept, $slope) = $lineFit->coefficients(); defined $intercept or die... Platforms: *nix

Statistics::GaussHelmert is a general weighted least squares estimation module. SYNOPSIS use Statistics::GaussHelmert; # create an empty model my $estimation = new Statistics::GaussHelmert; # setup the model given observations $y, covariance matrices # $Sigma_yy, an initial guess $b0... Platforms: *nix

SQLStatistics extends the T-SQL scripting environment so you can carry out statistical tests, calculate metrics and perform analyses on your data from within the database itself. This tends to be much faster and more efficient than transporting the data across the network to a client application,... Platforms: Windows

WeightedgradeCalc is a small, simple application specially designed to help you calculate your weighted grade and tell you how much a new assignment will affect your overall grade. This tool is very useful when you want to take control over your grades and their share in your weighted grade. for... Platforms: Windows

In SIMULINK-model of a Delta-Sigma ADC, we have a non-ideal multibit DAC in the feedback loop.       The DAC mismatch noise will be shaped according to a general Data Weighted Averaging (DWA) transfer function 1±z^(-D), where D is a positive integer (delay).     The DWA element selection... Platforms: Windows, Mac, *nix, Matlab, Solaris

Weighted Median Filter:It is same as median filter, only difference is the mask is not empty. It will having some weight (or values) and averaged.The steps to perform weighted median filtering are as follows:1) Assume a 3x3 weighted mask.2) Place the mask at the left hand corner.3) After... Platforms: Matlab

A Matlab library for Diffusion Weighted MRI (DW-MRI) Processing, Diffusion Tensor (DTI) Estimation, Diffusion Kurtosis (DKI) Estimation, Higher-order Diffusion Tensor Analysis, Tensor ODF estimation, Visualization and more. Platforms: Matlab

This function finds the weighted center of the 3D image A. The weights are the pixel values of A. This can be used to locate objects in 3D medical images. Platforms: Matlab

This function computes the weighted peak signal to noise ratio between two images. Platforms: Matlab

The function computes parameters a, b, and c of the weighted orthogonal least squares fit of line ax+by+c=0 to a set of 2D points with coordinates given by x and y and weights w.n=100;x=1:n;y=2.5*x + (5+300./x).*randn(1,n);plot(x,y,'.k')hold onw=1:n;[a b c] = wols(x,y,w);plot([0,n],[-c/b,-c/b -... Platforms: Matlab

Calculates the RiskMetrics "Technical Document" (1996) exponentially weighted covariance matrix (p.179), correlation and volatilities.Input:data - needs to be in format T x k with T = # observations, k = # assetslambda = decay factor Platforms: Matlab

polyfitweighted2.m and polyval2.m---------polyfitweighted2.m: Find a least-squares fit of 2D data z(x,y) with an n th order polynomial, weighted by w(x,y).polyval2.m: Evaluate 2D polynomial produced by polyfitweighted2.m.Usage polyfitweighted2-----P = polyfitweighted2(X,Y,Z,N,W) finds the... Platforms: Matlab

Plays weighted random music tracks from your mp3 collection. The playlist can be restricted to specific, detailed genres and a minimum weight, depending on mood, company, or occasion. Includes an editor for id3 and id3v2 fields. Requires java >= 1.4. Platforms: *nix