fast_algo_struct.h File Reference

File that implement various structure for fast algorithms. fast_algo_struct implement beam_t, histprune_t, pl_t and fast_algo_struct_t. More...

#include <s3types.h>
#include <mdef.h>
#include <ascr.h>
#include <logmath.h>

Go to the source code of this file.

Classes

struct beam_t

Structure that contains all beam parameters for beam pruning in Viterbi algorithm. More...

struct pl_t

Structure that contains all parameters for phoneme lookahead. More...

struct histprune_t

Structure containing various histogram pruning parameters and internal storage All in integers. More...

struct downsampling_t

Structure containing various parameters for downsampling. More...

struct gmm_select_t

Structure that contains all parameters for CI-based GMM selection. More...

struct gau_select_t

Structure that contains all parameters related to Gaussian selection. More...

struct fast_gmm_t

Structure that contains all parameter related to 4-Level Fast GMM computation. More...

Functions

beam_t * beam_init (float64 hmm, float64 ptr, float64 wd, float64 wdend, int32 ptranskip, int32 n_ciphone, logmath_t *logmath)

void beam_report (beam_t *b)

void beam_free (beam_t *b)

histprune_t * histprune_init (int32 maxhmm, int32 maxhist, int32 maxword, int32 hmmhistbinsize, int32 numNodes)

void histprune_zero_histbin (histprune_t *h)

void histprune_update_histbinsize (histprune_t *h, int32 hmmhistbinsize, int32 numNodes)

void histprune_report (histprune_t *h)

void histprune_showhistbin (histprune_t *hp, int32 nfr, char *uttid)

void histprune_free (histprune_t *h)

S3DECODER_EXPORT fast_gmm_t * fast_gmm_init (int32 down_sampling_ratio, int32 mode_cond_ds, int32 mode_dist_ds, int32 isGS4GS, int32 isSVQ4SVQ, float64 subvqbeam, float64 cibeam, float32 tighten_factor, int32 max_cd, int32 n_ci_sen, logmath_t *logmath)

void fast_gmm_report (fast_gmm_t *f)

S3DECODER_EXPORT void fast_gmm_free (fast_gmm_t *fg)

pl_t * pl_init (int32 pheurtype, float64 pl_beam, int32 n_ciphone, logmath_t *logmath)

void pl_report (pl_t *pl)

void pl_free (pl_t *pl)

void pl_computePhnHeur (mdef_t *md, ascr_t *a, pl_t *pl, int32 heutype, int32 win_strt, int32 win_efv)

Detailed Description

File that implement various structure for fast algorithms. fast_algo_struct implement beam_t, histprune_t, pl_t and fast_algo_struct_t.

Function Documentation

void beam_free ( beam_t * b )

free the beam_t data structure
Parameters:

b beam data structure

beam_t* beam_init ( float64 hmm,

float64 ptr,

float64 wd,

float64 wdend,

int32 ptranskip,

int32 n_ciphone,

logmath_t * logmath

)

Create and initialize a beam_t structure, with the given parameters, converting them from prob space to logs3 space.
Note the last parameter is used in controling when the word beam is applied.
Returns:
a pointer to created structure if successful, NULL otherwise.

Parameters:

hmm Input: hmm beam

ptr Input: phone transition beam

wd Input: word beam

wdend Input: word end beam.

ptranskip Input: whether to apply phoneme transition beam rather than word beam.

n_ciphone Input: number of ciphone to initialized arrays used in word end pruning.

void beam_report ( beam_t * b )

report the content of the beam_t data structure
Parameters:

b beam data structure

S3DECODER_EXPORT void fast_gmm_free ( fast_gmm_t * fg )

Free the fast_gmm_t structure
Parameters:

fg Input: structure to free

S3DECODER_EXPORT fast_gmm_t* fast_gmm_init ( int32 down_sampling_ratio,

int32 mode_cond_ds,

int32 mode_dist_ds,

int32 isGS4GS,

int32 isSVQ4SVQ,

float64 subvqbeam,

float64 cibeam,

float32 tighten_factor,

int32 max_cd,

int32 n_ci_sen,

logmath_t * logmath

)

Create and initialize a fast_gmm_t structure, withe the given parameters
Parameters:

down_sampling_ratio Input: The frame down-sampling ratio

mode_cond_ds Input: Whether conditional down sampling is used

mode_dist_ds Input: (NOT USED) Whether distance-based down sampling is used

isGS4GS Input: Whether Gaussian selection map is only used for Gaussian Selection. Not for down sampling

isSVQ4SVQ Input: Whether SVQ is used in acoustic model computation.

subvqbeam Input: Subvq beam

cibeam Input: CI phone beam

tighten_factor Input : A tightening factor used in down sampling

max_cd Input: Max CD senone to be computed

n_ci_sen Input: no. of ci senone, use to initialize the ci_occ array

void fast_gmm_report ( fast_gmm_t * f )

report the content of the fast_gmm_t data structure
Parameters:

f Input: the fast GMM computation structure

void histprune_free ( histprune_t * h )

free the histprune data structure
Parameters:

h Input/Output :histprune structure

histprune_t* histprune_init ( int32 maxhmm,

int32 maxhist,

int32 maxword,

int32 hmmhistbinsize,

int32 numNodes

)

Create and initialize a histprune_t structure, with the given parameters.
Parameters:

maxhmm Input: Maximum HMM per frame

maxhist Input: Maximum history per frame

hmmhistbinsize Input: Maximum no. words per frame Input: The size of each histogram

numNodes Input: The number of nodes in the tree (or graph?)

void histprune_report ( histprune_t * h )

report the content of the histprune_t data structure
Parameters:

h Input: histprune structure

void histprune_showhistbin ( histprune_t * hp,

int32 nfr,

char * uttid

)

report the histogram bins
Parameters:

hp Input: histprune structure

nfr Number of frames in an utterance

uttid Utterance ID

void histprune_update_histbinsize ( histprune_t * h,

int32 hmmhistbinsize,

int32 numNodes

)

Parameters:

h Input: histprune structure

hmmhistbinsize Input: The size of each histogram

numNodes Input: The number of nodes in the tree (or graph?)

void histprune_zero_histbin ( histprune_t * h )

Parameters:

h Input: histpurne structure

void pl_computePhnHeur ( mdef_t * md,

ascr_t * a,

pl_t * pl,

int32 heutype,

int32 win_strt,

int32 win_efv

)

Phoneme look-ahead and compute phoneme heuristic. This routine will compute a phone heuristic scores with lookahead win_efv frame and start at frame win_strt.
Parameters:

md Input: a model definition file

a Input: an acoustic score data structure

pl Input: a phoneme-lookahead data structure

heutype Input: type of heuristic used

win_strt Input: Starting frame of a window

win_efv Input: The effective window size

void pl_free ( pl_t * pl )

Free the phoneme lookahead data structure
Parameters:

pl Input/Output: a phoneme looahead data structure

pl_t* pl_init ( int32 pheurtype,

float64 pl_beam,

int32 n_ciphone,

logmath_t * logmath

)

Create and initialize the pl_t data structure
Returns:
an initialized phoneme lookahead data structure

Parameters:

pheurtype Input: Phoneme lookahead heuristic types TBD: (NOT DETAIL ENOUGH)

pl_beam Input: Phoneme lookahead beam

n_ciphone Input: Number of CI phones used in the cache size.

void pl_report ( pl_t * pl )

report the content of the phoneme lookahead data structure pl_t
Parameters:

pl Input: a phoneme lookahead data structure

Generated on Sat Apr 11 00:02:29 2009 by

1.3.9.1


Classes
struct	beam_t
	Structure that contains all beam parameters for beam pruning in Viterbi algorithm. More...
struct	pl_t
	Structure that contains all parameters for phoneme lookahead. More...
struct	histprune_t
	Structure containing various histogram pruning parameters and internal storage All in integers. More...
struct	downsampling_t
	Structure containing various parameters for downsampling. More...
struct	gmm_select_t
	Structure that contains all parameters for CI-based GMM selection. More...
struct	gau_select_t
	Structure that contains all parameters related to Gaussian selection. More...
struct	fast_gmm_t
	Structure that contains all parameter related to 4-Level Fast GMM computation. More...
Functions
beam_t *	beam_init (float64 hmm, float64 ptr, float64 wd, float64 wdend, int32 ptranskip, int32 n_ciphone, logmath_t *logmath)
void	beam_report (beam_t *b)
void	beam_free (beam_t *b)
histprune_t *	histprune_init (int32 maxhmm, int32 maxhist, int32 maxword, int32 hmmhistbinsize, int32 numNodes)
void	histprune_zero_histbin (histprune_t *h)
void	histprune_update_histbinsize (histprune_t *h, int32 hmmhistbinsize, int32 numNodes)
void	histprune_report (histprune_t *h)
void	histprune_showhistbin (histprune_t hp, int32 nfr, char uttid)
void	histprune_free (histprune_t *h)
S3DECODER_EXPORT fast_gmm_t *	fast_gmm_init (int32 down_sampling_ratio, int32 mode_cond_ds, int32 mode_dist_ds, int32 isGS4GS, int32 isSVQ4SVQ, float64 subvqbeam, float64 cibeam, float32 tighten_factor, int32 max_cd, int32 n_ci_sen, logmath_t *logmath)
void	fast_gmm_report (fast_gmm_t *f)
S3DECODER_EXPORT void	fast_gmm_free (fast_gmm_t *fg)
pl_t *	pl_init (int32 pheurtype, float64 pl_beam, int32 n_ciphone, logmath_t *logmath)
void	pl_report (pl_t *pl)
void	pl_free (pl_t *pl)
void	pl_computePhnHeur (mdef_t md, ascr_t a, pl_t *pl, int32 heutype, int32 win_strt, int32 win_efv)