Can the rica function return an estimate of the unmixing matrix?

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Henry Pang 2018-3-17

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https://ww2.mathworks.cn/matlabcentral/answers/388853-can-the-rica-function-return-an-estimate-of-the-unmixing-matrix

评论： Komal 2023-8-17

Hi, I am experimenting with MATLAB's rica algorithm and the conventional fastICA algorithm (open-source, MATLAB source code). I have 2 signals with mixed sine waves as input data and want to compare both algorithms' estimate of the unmixing matrix W given the input data. Essentially, this is the cocktail party problem with two sources and two mixed signals.

After reading the documentation on rica and the ReconstructionICA object, I am still very confused. Does the TransformWeights property of the ReconstructionICA object relate to W? If not, how can I calculate W with rica?

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Komal 2023-8-17

Can you give me rica.m files ?

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Answer 1

Bernhard Suhm 2018-3-25

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Yes, it does, if you have RICA reduce your original features to just 2, see this example in our doc: https://www.mathworks.com/help/stats/extract-mixed-signals.html