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 This code computes Goodness of Pronunciation (GOP) and extracts phone-level pronunciation feature for mispronunciations detection tasks, the reference:


BaseFloat ComputeAmGmmFeatureDeriv (const AmDiagGmm &am_gmm, const TransitionModel &trans_model, const Posterior &posterior, const MatrixBase< BaseFloat > &features, Matrix< BaseFloat > *direct_deriv, const AccumAmDiagGmm *model_diff=NULL, Matrix< BaseFloat > *indirect_deriv=NULL)
 Computes derivatives of the likelihood of these states (weighted), w.r.t. More...