nnet-compute.h

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// nnet2/nnet-compute.h

// Copyright 2012  Johns Hopkins University (author: Daniel Povey)
// Copyright 2015  David Snyder

// 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_NNET2_NNET_COMPUTE_H_
#define KALDI_NNET2_NNET_COMPUTE_H_

#include "nnet2/nnet-nnet.h"

namespace kaldi {
namespace nnet2 {

/* This header provides functionality for doing forward computation and
   backpropagation for whole chunks of features, e.g. whole utterances.  The
   code in nnet-update.h is designed for sample-by-sample computation.
*/


void NnetComputation(const Nnet &nnet,
                     const CuMatrixBase<BaseFloat> &input,  // features
                     bool pad_input,
                     CuMatrixBase<BaseFloat> *output); // posteriors.
void NnetComputationChunked(const Nnet &nnet,
                     const CuMatrixBase<BaseFloat> &input,  // features
                     int32 chunk_size,
                     CuMatrixBase<BaseFloat> *output); // posteriors.

BaseFloat NnetGradientComputation(const Nnet &nnet,
                                  const MatrixBase<BaseFloat> &input,
                                  bool pad_input,
                                  BaseFloat utterance_weight,
                                  const std::vector<int32> &labels,
                                  Nnet *nnet_to_update);



} // namespace nnet2
} // namespace kaldi

#endif // KALDI_NNET2_NNET_COMPUTE_H_