LatticeFasterDecoderConfig Struct Reference

#include <lattice-faster-decoder.h>

Collaboration diagram for LatticeFasterDecoderConfig:

Public Member Functions
	LatticeFasterDecoderConfig ()
void	Register (OptionsItf *opts)
void	Check () const

Public Attributes
BaseFloat	beam
int32	max_active
int32	min_active
BaseFloat	lattice_beam
int32	prune_interval
bool	determinize_lattice
BaseFloat	beam_delta
BaseFloat	hash_ratio
BaseFloat	prune_scale
fst::DeterminizeLatticePhonePrunedOptions	det_opts

Detailed Description

Definition at line 38 of file lattice-faster-decoder.h.

Constructor & Destructor Documentation

LatticeFasterDecoderConfig()

LatticeFasterDecoderConfig ( )

inline

Definition at line 58 of file lattice-faster-decoder.h.

                              : beam(16.0),
                                max_active(std::numeric_limits<int32>::max()),
                                min_active(200),
                                lattice_beam(10.0),
                                prune_interval(25),
                                determinize_lattice(true),
                                beam_delta(0.5),
                                hash_ratio(2.0),
                                prune_scale(0.1) { }

Member Function Documentation

Check()

void Check ( ) const

inline

Definition at line 86 of file lattice-faster-decoder.h.

References KALDI_ASSERT.

Referenced by LatticeBiglmFasterDecoder::LatticeBiglmFasterDecoder(), and LatticeFasterDecoderTpl< fst::StdFst, decoder::BackpointerToken >::LatticeFasterDecoderTpl().

                     {
    KALDI_ASSERT(beam > 0.0 && max_active > 1 && lattice_beam > 0.0
                 && min_active <= max_active
                 && prune_interval > 0 && beam_delta > 0.0 && hash_ratio >= 1.0
                 && prune_scale > 0.0 && prune_scale < 1.0);
  }

Register()

void Register ( OptionsItf *  opts )

inline

Definition at line 67 of file lattice-faster-decoder.h.

References OptionsItf::Register(), and DeterminizeLatticePhonePrunedOptions::Register().

Referenced by main(), OnlineNnet2DecodingConfig::Register(), OnlineGmmDecodingConfig::Register(), and OnlineNnet2DecodingThreadedConfig::Register().

                                  {
    det_opts.Register(opts);
    opts->Register("beam", &beam, "Decoding beam.  Larger->slower, more accurate.");
    opts->Register("max-active", &max_active, "Decoder max active states.  Larger->slower; "
                   "more accurate");
    opts->Register("min-active", &min_active, "Decoder minimum #active states.");
    opts->Register("lattice-beam", &lattice_beam, "Lattice generation beam.  Larger->slower, "
                   "and deeper lattices");
    opts->Register("prune-interval", &prune_interval, "Interval (in frames) at "
                   "which to prune tokens");
    opts->Register("determinize-lattice", &determinize_lattice, "If true, "
                   "determinize the lattice (lattice-determinization, keeping only "
                   "best pdf-sequence for each word-sequence).");
    opts->Register("beam-delta", &beam_delta, "Increment used in decoding-- this "
                   "parameter is obscure and relates to a speedup in the way the "
                   "max-active constraint is applied.  Larger is more accurate.");
    opts->Register("hash-ratio", &hash_ratio, "Setting used in decoder to "
                   "control hash behavior");
  }

Member Data Documentation

beam

BaseFloat beam

Definition at line 39 of file lattice-faster-decoder.h.

Referenced by LatticeBiglmFasterDecoder::GetCutoff(), LatticeBiglmFasterDecoder::ProcessEmitting(), and LatticeBiglmFasterDecoder::ProcessNonemitting().

beam_delta

BaseFloat beam_delta

Definition at line 46 of file lattice-faster-decoder.h.

Referenced by LatticeBiglmFasterDecoder::GetCutoff().

det_opts

fst::DeterminizeLatticePhonePrunedOptions det_opts

Definition at line 56 of file lattice-faster-decoder.h.

Referenced by kaldi::DecodeUtterance(), SingleUtteranceNnet3DecoderTpl< FST >::GetLattice(), SingleUtteranceNnet2Decoder::GetLattice(), LatticeBiglmFasterDecoder::GetLattice(), SingleUtteranceGmmDecoder::GetLattice(), SingleUtteranceNnet2DecoderThreaded::GetLattice(), DecodeUtteranceLatticeFasterClass::operator()(), and NnetBatchDecoder::ProcessOutputUtterance().

determinize_lattice

bool determinize_lattice

Definition at line 44 of file lattice-faster-decoder.h.

Referenced by SingleUtteranceNnet3DecoderTpl< FST >::GetLattice(), SingleUtteranceNnet2Decoder::GetLattice(), SingleUtteranceNnet2DecoderThreaded::GetLattice(), NnetBatchDecoder::GetOutput(), main(), and NnetBatchDecoder::ProcessOutputUtterance().

hash_ratio

BaseFloat hash_ratio

Definition at line 47 of file lattice-faster-decoder.h.

Referenced by LatticeBiglmFasterDecoder::PossiblyResizeHash().

lattice_beam

BaseFloat lattice_beam

Definition at line 42 of file lattice-faster-decoder.h.

Referenced by LatticeBiglmFasterDecoder::Decode(), kaldi::DecodeUtterance(), SingleUtteranceNnet3DecoderTpl< FST >::GetLattice(), SingleUtteranceNnet2Decoder::GetLattice(), LatticeBiglmFasterDecoder::GetLattice(), SingleUtteranceGmmDecoder::GetLattice(), SingleUtteranceNnet2DecoderThreaded::GetLattice(), DecodeUtteranceLatticeFasterClass::operator()(), NnetBatchDecoder::ProcessOutputUtterance(), LatticeBiglmFasterDecoder::PruneForwardLinks(), and LatticeBiglmFasterDecoder::PruneForwardLinksFinal().

max_active

int32 max_active

Definition at line 40 of file lattice-faster-decoder.h.

Referenced by LatticeBiglmFasterDecoder::GetCutoff().

min_active

int32 min_active

Definition at line 41 of file lattice-faster-decoder.h.

prune_interval

int32 prune_interval

Definition at line 43 of file lattice-faster-decoder.h.

Referenced by LatticeBiglmFasterDecoder::Decode().

prune_scale

BaseFloat prune_scale

Definition at line 51 of file lattice-faster-decoder.h.

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The documentation for this struct was generated from the following file:

• decoder/lattice-faster-decoder.h