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SGMM "quite long time training" with high dimension features

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Fei Xiong
2015-01-29
2015-01-29
  • Fei Xiong

    Fei Xiong - 2015-01-29

    Hi Kaldis,

    SGMM takes quite long long time for training when the input features are about 400,
    particularly for the 'sgmm2-acc-stats' process...

    is it something wrong or it takes longer with high dimension features?
    or I should fine-tune some parameters to run it properly/successfully with such high dimension?
    e.g. currently I still use:
    num_gauss=400 num_leaves=5000 num_substates=8000

    thanks in advance!
    Fei

     
    • Daniel Povey

      Daniel Povey - 2015-01-29

      It is expected to be slow for high-dimensional features because some parts
      of the training take linear time in the dimension and some quadratic (e.g.
      with covariance-related things).
      Dan

      On Thu, Jan 29, 2015 at 2:13 PM, Fei Xiong xffmqjx@users.sf.net wrote:

      Hi Kaldis,

      SGMM takes quite long long time for training when the input features are
      about 400,
      particularly for the 'sgmm2-acc-stats' process...

      is it something wrong or it takes longer with high dimension features?
      or I should fine-tune some parameters to run it properly/successfully with
      such high dimension?
      e.g. currently I still use:
      num_gauss=400 num_leaves=5000 num_substates=8000

      thanks in advance!
      Fei


      SGMM "quite long time training" with high dimension features
      https://sourceforge.net/p/kaldi/discussion/1355348/thread/81cc42f4/?limit=25#7294


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