// lat/push-lattice-test.cc
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// Copyright 2013 Johns Hopkins University (author: Daniel Povey)
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// See ../../COPYING for clarification regarding multiple authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
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// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
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// MERCHANTABLITY OR NON-INFRINGEMENT.
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// See the Apache 2 License for the specific language governing permissions and
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// limitations under the License.
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#include "lat/kaldi-lattice.h"
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#include "lat/push-lattice.h"
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#include "fstext/rand-fst.h"
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namespace kaldi {
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using namespace fst;
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CompactLattice *RandCompactLattice() {
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RandFstOptions opts;
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opts.acyclic = true;
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Lattice *fst = fst::RandPairFst<LatticeArc>(opts);
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CompactLattice *cfst = new CompactLattice;
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ConvertLattice(*fst, cfst);
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delete fst;
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return cfst;
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}
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void TestPushCompactLatticeStrings() {
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CompactLattice *clat = RandCompactLattice();
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CompactLattice clat2(*clat);
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PushCompactLatticeStrings(&clat2);
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KALDI_ASSERT(fst::RandEquivalent(*clat, clat2, 5, 0.001, Rand(), 10));
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for (CompactLatticeArc::StateId s = 0; s < clat2.NumStates(); s++) {
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if (s == 0)
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continue; // We don't check state zero, as the "leftover string" stays
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// there.
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int32 first_label = -1;
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bool ok = false;
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bool first_label_set = false;
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for (ArcIterator<CompactLattice> aiter(clat2, s); !aiter.Done();
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aiter.Next()) {
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if (aiter.Value().weight.String().size() == 0) {
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ok = true;
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} else {
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int32 this_label = aiter.Value().weight.String().front();
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if (first_label_set) {
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if (this_label != first_label) ok = true;
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} else {
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first_label = this_label;
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first_label_set = true;
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}
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}
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}
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if (clat2.Final(s) != CompactLatticeWeight::Zero()) {
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if (clat2.Final(s).String().size() == 0) ok = true;
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else {
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int32 this_label = clat2.Final(s).String().front();
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if (first_label_set && this_label != first_label) ok = true;
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}
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}
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KALDI_ASSERT(ok);
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}
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delete clat;
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}
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void TestPushCompactLatticeWeights() {
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CompactLattice *clat = RandCompactLattice();
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CompactLattice clat2(*clat);
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PushCompactLatticeWeights(&clat2);
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KALDI_ASSERT(fst::RandEquivalent(*clat, clat2, 5, 0.001, Rand(), 10));
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for (CompactLatticeArc::StateId s = 0; s < clat2.NumStates(); s++) {
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if (s == 0)
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continue; // We don't check state zero, as the "leftover string" stays
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// there.
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LatticeWeight sum = clat2.Final(s).Weight();
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for (ArcIterator<CompactLattice> aiter(clat2, s); !aiter.Done();
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aiter.Next()) {
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sum = Plus(sum, aiter.Value().weight.Weight());
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}
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if (!ApproxEqual(sum, LatticeWeight::One())) {
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{
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fst::FstPrinter<CompactLatticeArc> printer(clat2, NULL, NULL,
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NULL, true, true, "\t");
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printer.Print(&std::cerr, "<unknown>");
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}
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{
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fst::FstPrinter<CompactLatticeArc> printer(*clat, NULL, NULL,
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NULL, true, true, "\t");
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printer.Print(&std::cerr, "<unknown>");
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}
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KALDI_ERR << "Bad lattice being pushed.";
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}
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}
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delete clat;
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}
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} // end namespace kaldi
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int main() {
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using namespace kaldi;
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using kaldi::int32;
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for (int32 i = 0; i < 15; i++) {
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TestPushCompactLatticeStrings();
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TestPushCompactLatticeWeights();
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}
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KALDI_LOG << "Success.";
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}
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