OnlineGmmDecodingModels Class Reference

This class is used to read, store and give access to the models used for 3 phases of decoding (first-pass with online-CMN features; the ML models used for estimating transforms; and the discriminatively trained models). More...

#include <online-gmm-decoding.h>

Collaboration diagram for OnlineGmmDecodingModels:

Public Member Functions
	OnlineGmmDecodingModels (const OnlineGmmDecodingConfig &config)
const TransitionModel &	GetTransitionModel () const
const AmDiagGmm &	GetOnlineAlignmentModel () const
const AmDiagGmm &	GetModel () const
const AmDiagGmm &	GetFinalModel () const
const BasisFmllrEstimate &	GetFmllrBasis () const

Private Attributes
TransitionModel	tmodel_
AmDiagGmm	online_alignment_model_
AmDiagGmm	model_
AmDiagGmm	rescore_model_
BasisFmllrEstimate	fmllr_basis_

Detailed Description

This class is used to read, store and give access to the models used for 3 phases of decoding (first-pass with online-CMN features; the ML models used for estimating transforms; and the discriminatively trained models).

It takes care of the logic whereby if, say, the last model isn't given we default to the second model, and so on, and it interpretes the filenames from the config object. It is passed as a const reference to other objects in this header.

Definition at line 166 of file online-gmm-decoding.h.

Constructor & Destructor Documentation

OnlineGmmDecodingModels()

OnlineGmmDecodingModels

(

const OnlineGmmDecodingConfig &

config

)

Definition at line 346 of file online-gmm-decoding.cc.

References TransitionModel::Compatible(), OnlineGmmDecodingConfig::fmllr_basis_rxfilename, KALDI_ASSERT, KALDI_ERR, OnlineGmmDecodingConfig::model_rxfilename, OnlineGmmDecodingConfig::online_alimdl_rxfilename, TransitionModel::Read(), OnlineGmmDecodingConfig::rescore_model_rxfilename, and Input::Stream().

                                           {
  KALDI_ASSERT(!config.model_rxfilename.empty() &&
               "You must supply the --model option");

  {
    bool binary;
    Input ki(config.model_rxfilename, &binary);
    tmodel_.Read(ki.Stream(), binary);
    model_.Read(ki.Stream(), binary);
  }
  
  if (!config.online_alimdl_rxfilename.empty()) {
    bool binary;
    Input ki(config.online_alimdl_rxfilename, &binary);
    TransitionModel tmodel;
    tmodel.Read(ki.Stream(), binary);
    if (!tmodel.Compatible(tmodel_))
      KALDI_ERR << "Incompatible models given to the --model and "
                << "--online-alignment-model options";
    online_alignment_model_.Read(ki.Stream(), binary);
  }

  if (!config.rescore_model_rxfilename.empty()) {
    bool binary;
    Input ki(config.rescore_model_rxfilename, &binary);
    TransitionModel tmodel;
    tmodel.Read(ki.Stream(), binary);
    if (!tmodel.Compatible(tmodel_))
      KALDI_ERR << "Incompatible models given to the --model and "
                << "--final-model options";
    rescore_model_.Read(ki.Stream(), binary);
  }

  if (!config.fmllr_basis_rxfilename.empty()) {
    // We could just as easily use ReadKaldiObject() here.
    bool binary;
    Input ki(config.fmllr_basis_rxfilename, &binary);
    fmllr_basis_.Read(ki.Stream(), binary);
  }
}

Member Function Documentation

GetFinalModel()

const AmDiagGmm & GetFinalModel

(

)

const

Definition at line 404 of file online-gmm-decoding.cc.

Referenced by SingleUtteranceGmmDecoder::GetLattice(), and SingleUtteranceGmmDecoder::RescoringIsNeeded().

                                                              {
  if (rescore_model_.NumPdfs() != 0)
    return rescore_model_;
  else
    return model_;
}

GetFmllrBasis()

const BasisFmllrEstimate & GetFmllrBasis

(

)

const

Definition at line 411 of file online-gmm-decoding.cc.

Referenced by SingleUtteranceGmmDecoder::EstimateFmllr().

                                                                       {
  return fmllr_basis_;  
}

GetModel()

const AmDiagGmm & GetModel

(

)

const

Definition at line 400 of file online-gmm-decoding.cc.

Referenced by SingleUtteranceGmmDecoder::AdvanceDecoding(), SingleUtteranceGmmDecoder::EstimateFmllr(), SingleUtteranceGmmDecoder::GetGaussianPosteriors(), and SingleUtteranceGmmDecoder::RescoringIsNeeded().

                                                         {
  return model_;
}

GetOnlineAlignmentModel()

const AmDiagGmm & GetOnlineAlignmentModel

(

)

const

Definition at line 393 of file online-gmm-decoding.cc.

Referenced by SingleUtteranceGmmDecoder::AdvanceDecoding(), and SingleUtteranceGmmDecoder::GetGaussianPosteriors().

                                                                        {
  if (online_alignment_model_.NumPdfs() != 0)
    return online_alignment_model_;
  else
    return model_;
}

GetTransitionModel()

const TransitionModel & GetTransitionModel

(

)

const

Definition at line 389 of file online-gmm-decoding.cc.

Referenced by SingleUtteranceGmmDecoder::AdvanceDecoding(), SingleUtteranceGmmDecoder::EndpointDetected(), SingleUtteranceGmmDecoder::GetGaussianPosteriors(), and SingleUtteranceGmmDecoder::GetLattice().

                                                                         {
  return tmodel_;
}

Member Data Documentation

fmllr_basis_

BasisFmllrEstimate fmllr_basis_

private

Definition at line 195 of file online-gmm-decoding.h.

model_

AmDiagGmm model_

private

Definition at line 189 of file online-gmm-decoding.h.

online_alignment_model_

AmDiagGmm online_alignment_model_

private

Definition at line 187 of file online-gmm-decoding.h.

rescore_model_

AmDiagGmm rescore_model_

private

Definition at line 192 of file online-gmm-decoding.h.

tmodel_

TransitionModel tmodel_

private

Definition at line 184 of file online-gmm-decoding.h.

---

The documentation for this class was generated from the following files:

• online2/online-gmm-decoding.h
• online2/online-gmm-decoding.cc