Initial commit: FunASR Speech Recognition Toolkit

Add complete FunASR codebase including models, runtime, and documentation.
2026-07-09 22:38:58 +08:00
commit 6116b1f3c6
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+// fstext/push-special-test.cc
+
+// Copyright 2009-2011  Microsoft Corporation
+
+// 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 "fstext/push-special.h"
+#include "fstext/rand-fst.h"
+#include "fstext/fstext-utils.h"
+#include "base/kaldi-math.h"
+
+namespace fst
+{
+
+
+// Don't instantiate with log semiring, as RandEquivalent may fail.
+static void TestPushSpecial() {
+  typedef StdArc Arc;
+  typedef Arc::Label Label;
+  typedef Arc::StateId StateId;
+  typedef Arc::Weight Weight;
+
+  VectorFst<Arc> *fst = RandFst<StdArc>();
+
+  {
+    FstPrinter<Arc> fstprinter(*fst, NULL, NULL, NULL, false, true, "\t");
+    fstprinter.Print(&std::cout, "standard output");
+  }
+
+  VectorFst<Arc> fst_copy(*fst);
+
+  float delta = kDelta;
+  PushSpecial(&fst_copy, delta);
+
+  Weight min, max;
+  float delta_dontcare = 0.1;
+  IsStochasticFstInLog(fst_copy, delta_dontcare, &min, &max);
+  // the per-state normalizers are allowed to deviate from the average by delta
+  // up and down, so the difference from the min to max weight should be 2*delta
+  // or less.  We give it a bit of wiggle room (->2.5) due to numerical roundoff.
+
+
+  {
+    FstPrinter<Arc> fstprinter(fst_copy, NULL, NULL, NULL, false, true, "\t");
+    fstprinter.Print(&std::cout, "standard output");
+  }
+  KALDI_LOG << "Min value is " << min.Value() << ", max value is " << max.Value();
+
+  // below, should be <= delta but different pieces of code compute this in this
+  // part vs. push-special, so the roundoff may be different.
+  KALDI_ASSERT(std::abs(min.Value() - max.Value()) <=  1.2 * delta);
+
+  KALDI_ASSERT(RandEquivalent(*fst, fst_copy,
+                              5/*paths*/, 0.01/*delta*/, kaldi::Rand()/*seed*/, 100/*path length-- max?*/));
+  delete fst;
+}
+
+
+} // namespace fst
+
+int main() {
+  kaldi::g_kaldi_verbose_level = 4;
+  using namespace fst;
+  for (int i = 0; i < 25; i++) {
+    TestPushSpecial();
+  }
+}