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src/lat/push-lattice-test.cc
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// lat/push-lattice-test.cc
// Copyright 2013 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 "lat/kaldi-lattice.h"
#include "lat/push-lattice.h"
#include "fstext/rand-fst.h"
namespace kaldi {
using namespace fst;
CompactLattice *RandCompactLattice() {
RandFstOptions opts;
opts.acyclic = true;
Lattice *fst = fst::RandPairFst<LatticeArc>(opts);
CompactLattice *cfst = new CompactLattice;
ConvertLattice(*fst, cfst);
delete fst;
return cfst;
}
void TestPushCompactLatticeStrings() {
CompactLattice *clat = RandCompactLattice();
CompactLattice clat2(*clat);
PushCompactLatticeStrings(&clat2);
KALDI_ASSERT(fst::RandEquivalent(*clat, clat2, 5, 0.001, Rand(), 10));
for (CompactLatticeArc::StateId s = 0; s < clat2.NumStates(); s++) {
if (s == 0)
continue; // We don't check state zero, as the "leftover string" stays
// there.
int32 first_label = -1;
bool ok = false;
bool first_label_set = false;
for (ArcIterator<CompactLattice> aiter(clat2, s); !aiter.Done();
aiter.Next()) {
if (aiter.Value().weight.String().size() == 0) {
ok = true;
} else {
int32 this_label = aiter.Value().weight.String().front();
if (first_label_set) {
if (this_label != first_label) ok = true;
} else {
first_label = this_label;
first_label_set = true;
}
}
}
if (clat2.Final(s) != CompactLatticeWeight::Zero()) {
if (clat2.Final(s).String().size() == 0) ok = true;
else {
int32 this_label = clat2.Final(s).String().front();
if (first_label_set && this_label != first_label) ok = true;
}
}
KALDI_ASSERT(ok);
}
delete clat;
}
void TestPushCompactLatticeWeights() {
CompactLattice *clat = RandCompactLattice();
CompactLattice clat2(*clat);
PushCompactLatticeWeights(&clat2);
KALDI_ASSERT(fst::RandEquivalent(*clat, clat2, 5, 0.001, Rand(), 10));
for (CompactLatticeArc::StateId s = 0; s < clat2.NumStates(); s++) {
if (s == 0)
continue; // We don't check state zero, as the "leftover string" stays
// there.
LatticeWeight sum = clat2.Final(s).Weight();
for (ArcIterator<CompactLattice> aiter(clat2, s); !aiter.Done();
aiter.Next()) {
sum = Plus(sum, aiter.Value().weight.Weight());
}
if (!ApproxEqual(sum, LatticeWeight::One())) {
{
fst::FstPrinter<CompactLatticeArc> printer(clat2, NULL, NULL,
NULL, true, true, "\t");
printer.Print(&std::cerr, "<unknown>");
}
{
fst::FstPrinter<CompactLatticeArc> printer(*clat, NULL, NULL,
NULL, true, true, "\t");
printer.Print(&std::cerr, "<unknown>");
}
KALDI_ERR << "Bad lattice being pushed.";
}
}
delete clat;
}
} // end namespace kaldi
int main() {
using namespace kaldi;
using kaldi::int32;
for (int32 i = 0; i < 15; i++) {
TestPushCompactLatticeStrings();
TestPushCompactLatticeWeights();
}
KALDI_LOG << "Success.";
}
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