Generalized Gamma Distribution Model

Reshmi Benjamin

2011 12 14

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sir I want to compute the estimation parameter of wavelet sub-band coefficient distribution by fitting with Generalized Gamma Distribution Model. so in this regard how to fix a,d,p('a' and 'd' are called the shape parameters and 'p' is called the scale parameters)

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Andreas Haselsteiner 2019-12-4

在 MATLAB Online 中打开

I just submitted a custom implementation of the generalized gamma distribution to Matlab's File Exchange: https://de.mathworks.com/matlabcentral/fileexchange/73550-generalized-gamma-distribution-in-matlab

Here is an example how to estimate the parameters using Maximum Likelihood Estimation:

rng('default'); % For reproduceability.
pdTrue = GeneralizedGamma(1.4, 1.0, 1.6);
n = 10000;
sample = pdTrue.drawSample(n);
pdEstimated = GeneralizedGamma();
pdEstimated.fitDist(sample)