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Gaussian Mixture (Migrated from community.research.microsoft.com) RRS feed

  • Question

  • Ali Yaghoubi posted on 03-05-2011 5:28 AM

    Hi ,

    I know that I am making a mistake that I think in each iteration means[z[n]] and precs[z[n]] just take means[1] and precs[1] that is only one of the two possible components of the mixture, because weights takes{1,1}.

    Would you mind explaining more clear the events?

    Variable<Vector> weights = Variable.Dirichlet(k, new double[] { 1, 1 });

    ...

    VariableArray<int> z = Variable.Array<int>(n);

    ...

    using (Variable.ForEach(n)) {
      z[n] =
    Variable.Discrete(weights);
     
    using (Variable.Switch(z[n])) {
        data[n] =
    Variable.VectorGaussianFromMeanAndPrecision(means[z[n]], precs[z[n]]);
      }
    }

    Thanks

    Friday, June 3, 2011 6:30 PM

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