// fstbin/fstpushspecial.cc // Copyright 2012 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/kaldi-io.h" #include "util/parse-options.h" #include "util/text-utils.h" #include "fst/fstlib.h" #include "fstext/fstext-utils.h" #include "fstext/push-special.h" #include "fstext/kaldi-fst-io.h" int main(int argc, char *argv[]) { try { using namespace kaldi; using namespace fst; using kaldi::int32; const char *usage = "Pushes weights in an FST such that all the states\n" "in the FST have arcs and final-probs with weights that\n" "sum to the same amount (viewed as being in the log semiring).\n" "Thus, the \"extra weight\" is distributed throughout the FST.\n" "Tolerance parameter --delta controls how exact this is, and the\n" "speed.\n" "\n" "Usage: fstpushspecial [options] [in.fst [out.fst] ]\n"; BaseFloat delta = kDelta; ParseOptions po(usage); po.Register("delta", &delta, "Delta cost: after pushing, all states will " "have a total weight that differs from the average by no more " "than this."); po.Read(argc, argv); if (po.NumArgs() > 2) { po.PrintUsage(); exit(1); } std::string fst_in_filename = po.GetOptArg(1), fst_out_filename = po.GetOptArg(2); VectorFst *fst = ReadFstKaldi(fst_in_filename); PushSpecial(fst, delta); WriteFstKaldi(*fst, fst_out_filename); delete fst; return 0; } catch(const std::exception &e) { std::cerr << e.what(); return -1; } }