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src/ivectorbin/ivector-adapt-plda.cc
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// ivectorbin/ivector-adapt-plda.cc
// Copyright 2013-2014 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 "ivector/plda.h"
int main(int argc, char *argv[]) {
using namespace kaldi;
typedef kaldi::int32 int32;
try {
const char *usage =
"Adapt a PLDA object using unsupervised adaptation-data iVectors from a different
"
"domain to the training data.
"
"
"
"Usage: ivector-adapt-plda [options] <plda-in> <ivectors-rspecifier> <plda-out>
"
"e.g.: ivector-adapt-plda plda ark:ivectors.ark plda.adapted
";
ParseOptions po(usage);
bool binary = true;
po.Register("binary", &binary, "Write output in binary mode");
PldaUnsupervisedAdaptorConfig config;
config.Register(&po);
po.Read(argc, argv);
if (po.NumArgs() != 3) {
po.PrintUsage();
exit(1);
}
std::string plda_rxfilename = po.GetArg(1),
ivector_rspecifier = po.GetArg(2),
plda_wxfilename = po.GetArg(3);
Plda plda;
ReadKaldiObject(plda_rxfilename, &plda);
SequentialBaseFloatVectorReader ivector_reader(ivector_rspecifier);
int32 num_done = 0;
PldaUnsupervisedAdaptor adaptor;
for (; !ivector_reader.Done(); ivector_reader.Next(), num_done++)
adaptor.AddStats(1.0, ivector_reader.Value());
adaptor.UpdatePlda(config, &plda);
WriteKaldiObject(plda, plda_wxfilename, binary);
return (num_done != 0 ? 0 : 1);
} catch(const std::exception &e) {
std::cerr << e.what();
return -1;
}
}
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