"clustering signals"

lazyfx
lazyfx New Altair Community Member
edited November 5 in Community Q&A

Hello all,

I am trying to cluster noisy signal data. My data consists of 145 patterns with 150 timepoints each and is very noisy. When a few patterns are averaged together, the waveform appears to be sinusoidal.

My goal is to obtain an unknown number of clusters of these signals that have similar phase shifts. I've tried hierarchical agglomerative clustering with cosine similarity, but I believe that my data is much too noisy. From this, I obtained random clusters with very little difference between them. Any suggestions?

Thanks!

J
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Answers

  • haddock
    haddock New Altair Community Member
    Hi there J,

    Firstly, welcome! Secondly, have you tried the Series extension? I suspect it will be just what you need, it is a very nice toolkit for signal scramblers. What's more it is close to the heart of the great Magus Ingo - indeed it is rumoured that he uses it to co-ordinate his crazy dance moves. He actually  has built music classifiers with it ( but probably just to stop tangoing to hip-hop ).

    Again, welcome  ;D

    Extension? Help->Update Rapidminer etc.
  • IngoRM
    IngoRM New Altair Community Member

    but probably just to stop tangoing to hip-hop
    THAT was my intention. But after having realized that this was actually the secret of my moves I stopped this project again  ;D

    Welcome from me as well. Cheers,
    Ingo

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