hmm-utils.h File Reference

#include "hmm/hmm-topology.h"
#include "hmm/transition-model.h"
#include "lat/kaldi-lattice.h"

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Classes
struct	HTransducerConfig
	Configuration class for the GetHTransducer() function; see The HTransducerConfig configuration class for context. More...
struct	HmmCacheHash

Namespaces
	kaldi
	This code computes Goodness of Pronunciation (GOP) and extracts phone-level pronunciation feature for mispronunciations detection tasks, the reference:

Typedefs
typedef unordered_map< std::pair< int32, std::vector< int32 > >, fst::VectorFst< fst::StdArc > *, HmmCacheHash >	HmmCacheType
	HmmCacheType is a map from (central-phone, sequence of pdf-ids) to FST, used as cache in GetHmmAsFsa, as an optimization. More...

Functions
fst::VectorFst< fst::StdArc > *	GetHmmAsFsa (std::vector< int32 > context_window, const ContextDependencyInterface &ctx_dep, const TransitionModel &trans_model, const HTransducerConfig &config, HmmCacheType *cache=NULL)
	Called by GetHTransducer() and probably will not need to be called directly; it creates and returns the FST corresponding to the phone. More...
fst::VectorFst< fst::StdArc > *	GetHmmAsFsaSimple (std::vector< int32 > context_window, const ContextDependencyInterface &ctx_dep, const TransitionModel &trans_model, BaseFloat prob_scale)
	Included mainly as a form of documentation, not used in any other code currently. More...
fst::VectorFst< fst::StdArc > *	GetHTransducer (const std::vector< std::vector< int32 > > &ilabel_info, const ContextDependencyInterface &ctx_dep, const TransitionModel &trans_model, const HTransducerConfig &config, std::vector< int32 > *disambig_syms_left)
	Returns the H tranducer; result owned by caller. More...
void	GetIlabelMapping (const std::vector< std::vector< int32 > > &ilabel_info_old, const ContextDependencyInterface &ctx_dep, const TransitionModel &trans_model, std::vector< int32 > *old2new_map)
	GetIlabelMapping produces a mapping that's similar to HTK's logical-to-physical model mapping (i.e. More...
void	AddSelfLoops (const TransitionModel &trans_model, const std::vector< int32 > &disambig_syms, BaseFloat self_loop_scale, bool reorder, bool check_no_self_loops, fst::VectorFst< fst::StdArc > *fst)
	For context, see AddSelfLoops(). More...
void	AddTransitionProbs (const TransitionModel &trans_model, const std::vector< int32 > &disambig_syms, BaseFloat transition_scale, BaseFloat self_loop_scale, fst::VectorFst< fst::StdArc > *fst)
	Adds transition-probs, with the supplied scales (see Scaling of transition and acoustic probabilities), to the graph. More...
void	AddTransitionProbs (const TransitionModel &trans_model, BaseFloat transition_scale, BaseFloat self_loop_scale, Lattice *lat)
	This is as AddSelfLoops(), but operates on a Lattice, where it affects the graph part of the weight (the first element of the pair). More...
fst::VectorFst< fst::StdArc > *	GetPdfToTransitionIdTransducer (const TransitionModel &trans_model)
	Returns a transducer from pdfs plus one (input) to transition-ids (output). More...
void	ConvertTransitionIdsToPdfs (const TransitionModel &trans_model, const std::vector< int32 > &disambig_syms, fst::VectorFst< fst::StdArc > *fst)
	Converts all transition-ids in the FST to pdfs plus one. More...
bool	SplitToPhones (const TransitionModel &trans_model, const std::vector< int32 > &alignment, std::vector< std::vector< int32 > > *split_alignment)
	SplitToPhones splits up the TransitionIds in "alignment" into their individual phones (one vector per instance of a phone). More...
bool	ConvertAlignment (const TransitionModel &old_trans_model, const TransitionModel &new_trans_model, const ContextDependencyInterface &new_ctx_dep, const std::vector< int32 > &old_alignment, int32 subsample_factor, bool repeat_frames, bool reorder, const std::vector< int32 > *phone_map, std::vector< int32 > *new_alignment)
	ConvertAlignment converts an alignment that was created using one model, to another model. More...
bool	ConvertPhnxToProns (const std::vector< int32 > &phnx, const std::vector< int32 > &words, int32 word_start_sym, int32 word_end_sym, std::vector< std::vector< int32 > > *prons)
void	GetRandomAlignmentForPhone (const ContextDependencyInterface &ctx_dep, const TransitionModel &trans_model, const std::vector< int32 > &phone_window, std::vector< int32 > *alignment)
void	ChangeReorderingOfAlignment (const TransitionModel &trans_model, std::vector< int32 > *alignment)
void	GetPdfToPhonesMap (const TransitionModel &trans_model, std::vector< std::set< int32 > > *pdf2phones)