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src/sgmm2bin/sgmm2-est-ebw.cc
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// sgmm2bin/sgmm2-est-ebw.cc
// Copyright 2012 Johns Hopkins Univerity (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 "base/kaldi-common.h"
#include "util/common-utils.h"
#include "util/kaldi-thread.h"
#include "hmm/transition-model.h"
#include "sgmm2/estimate-am-sgmm2-ebw.h"
int main(int argc, char *argv[]) {
using namespace kaldi;
typedef kaldi::int32 int32;
using std::string;
try {
const char *usage =
"Estimate SGMM model parameters discriminatively using Extended
"
"Baum-Welch style of update
"
"Usage: sgmm2-est-ebw [options] <model-in> <num-stats-in> <den-stats-in> <model-out>
";
string update_flags_str = "vMNwcSt";
bool binary_write = true;
string write_flags_str = "gsnu";
EbwAmSgmm2Options opts;
ParseOptions po(usage);
po.Register("binary", &binary_write, "Write output in binary mode");
po.Register("update-flags", &update_flags_str, "Which SGMM parameters to "
"update: subset of vMNwcSt.");
po.Register("write-flags", &write_flags_str, "Which SGMM parameters to "
"write: subset of gsnu");
po.Register("num-threads", &g_num_threads, "Number of threads to use in "
"weight update and normalizer computation");
opts.Register(&po);
po.Read(argc, argv);
if (po.NumArgs() != 4) {
po.PrintUsage();
exit(1);
}
string model_in_filename = po.GetArg(1),
num_stats_filename = po.GetArg(2),
den_stats_filename = po.GetArg(3),
model_out_filename = po.GetArg(4);
SgmmUpdateFlagsType update_flags = StringToSgmmUpdateFlags(update_flags_str);
SgmmWriteFlagsType write_flags = StringToSgmmWriteFlags(write_flags_str);
AmSgmm2 am_sgmm;
TransitionModel trans_model;
{
bool binary;
Input ki(model_in_filename, &binary);
trans_model.Read(ki.Stream(), binary);
am_sgmm.Read(ki.Stream(), binary);
}
MleAmSgmm2Accs sgmm_num_accs;
{
bool binary;
Vector<double> transition_accs; // won't be used.
Input ki(num_stats_filename, &binary);
transition_accs.Read(ki.Stream(), binary);
sgmm_num_accs.Read(ki.Stream(), binary, false); // false == add; doesn't matter.
}
MleAmSgmm2Accs sgmm_den_accs;
{
bool binary;
Vector<double> transition_accs; // won't be used.
Input ki(den_stats_filename, &binary);
transition_accs.Read(ki.Stream(), binary);
sgmm_den_accs.Read(ki.Stream(), binary, false); // false == add; doesn't matter.
}
sgmm_num_accs.Check(am_sgmm, true); // Will check consistency and print some diagnostics.
sgmm_den_accs.Check(am_sgmm, true); // Will check consistency and print some diagnostics.
{ // Update SGMM.
BaseFloat auxf_impr, count;
kaldi::EbwAmSgmm2Updater sgmm_updater(opts);
sgmm_updater.Update(sgmm_num_accs, sgmm_den_accs, &am_sgmm,
update_flags, &auxf_impr, &count);
KALDI_LOG << "Overall auxf impr/frame from SGMM update is " << (auxf_impr/count)
<< " over " << count << " frames.";
}
{
Output ko(model_out_filename, binary_write);
trans_model.Write(ko.Stream(), binary_write);
am_sgmm.Write(ko.Stream(), binary_write, write_flags);
}
KALDI_LOG << "Wrote model to " << model_out_filename;
return 0;
} catch(const std::exception &e) {
std::cerr << e.what();
return -1;
}
}
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