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src/sgmm2bin/sgmm2-comp-prexform.cc
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// sgmm2bin/sgmm2-comp-prexform.cc
// Copyright 2009-2012 Saarland University (author: Arnab Ghoshal)
// Johns Hopkins University (author: Daniel Povey)
// 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.
#include "util/common-utils.h"
#include "sgmm2/am-sgmm2.h"
#include "sgmm2/fmllr-sgmm2.h"
#include "hmm/transition-model.h"
int main(int argc, char *argv[]) {
try {
typedef kaldi::int32 int32;
const char *usage =
"Compute \"pre-transform\" parameters required for estimating fMLLR with
"
"SGMMs, and write to a model file, after the SGMM.
"
"Usage: sgmm2-comp-prexform [options] <sgmm2-in> <occs-in> <sgmm-out>
";
bool binary = true;
kaldi::ParseOptions po(usage);
po.Register("binary", &binary, "Write output in binary mode");
po.Read(argc, argv);
if (po.NumArgs() < 3) {
po.PrintUsage();
exit(1);
}
std::string sgmm_in_filename = po.GetArg(1),
occs_filename = po.GetArg(2),
sgmm_out_filename = po.GetArg(3);
kaldi::AmSgmm2 sgmm_in;
kaldi::TransitionModel trans_model;
{
bool binary_read;
kaldi::Input ki(sgmm_in_filename, &binary_read);
trans_model.Read(ki.Stream(), binary_read);
sgmm_in.Read(ki.Stream(), binary_read);
}
kaldi::Vector<kaldi::BaseFloat> occs;
{
bool binary_read;
kaldi::Input ki(occs_filename, &binary_read);
occs.Read(ki.Stream(), binary_read);
}
kaldi::Sgmm2FmllrGlobalParams fmllr_globals;
sgmm_in.ComputeFmllrPreXform(occs, &fmllr_globals.pre_xform_,
&fmllr_globals.inv_xform_,
&fmllr_globals.mean_scatter_);
{
kaldi::Output ko(sgmm_out_filename, binary);
trans_model.Write(ko.Stream(), binary);
sgmm_in.Write(ko.Stream(), binary, kaldi::kSgmmWriteAll);
fmllr_globals.Write(ko.Stream(), binary);
}
KALDI_LOG << "Written model to " << sgmm_out_filename;
} catch(const std::exception &e) {
std::cerr << e.what() << '
';
return -1;
}
}
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