diag-gmm-normal.h

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// gmm/diag-gmm-normal.h

// Copyright 2009-2011  Saarland University  Korbinian Riedhammer  Yanmin Qian
//                      

// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.

#ifndef KALDI_GMM_DIAG_GMM_NORMAL_H_
#define KALDI_GMM_DIAG_GMM_NORMAL_H_ 1

#include <vector>

#include "base/kaldi-common.h"
#include "gmm/model-common.h"
#include "gmm/diag-gmm.h"
#include "matrix/matrix-lib.h"

namespace kaldi {


class DiagGmm;

class DiagGmmNormal {
 public:
  DiagGmmNormal() { }

  explicit DiagGmmNormal(const DiagGmm &gmm) {
    CopyFromDiagGmm(gmm);
  }

  void Resize(int32 nMix, int32 dim);

  void CopyFromDiagGmm(const DiagGmm &diaggmm);

  void CopyToDiagGmm(DiagGmm *diaggmm, GmmFlagsType flags = kGmmAll) const;

  int32 NumGauss() { return weights_.Dim(); }
  int32 Dim() { return means_.NumCols(); }

  Vector<double> weights_;  
  Matrix<double> means_;    
  Matrix<double> vars_;     

  KALDI_DISALLOW_COPY_AND_ASSIGN(DiagGmmNormal);
};

}  // End namespace kaldi

#endif  // KALDI_GMM_DIAG_GMM_NORMAL_H_