vocabulary.h File Reference

Word dictionary for recognition. More...

#include <sent/stddefs.h>
#include <sent/htk_hmm.h>

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Defines
#define	BEGIN_WORD_DEFAULT   "<s>"
	Default word string of beginning-of-sentence word.
#define	END_WORD_DEFAULT   "</s>"
	Default word string of end-of-sentence word.
#define	MAXWSTEP   4000
	Memory allocation step in number of words when loading a word dictionary.
Functions
WORD_INFO *	word_info_new ()
void	word_info_free (WORD_INFO *winfo)
void	winfo_init (WORD_INFO *winfo)
void	winfo_expand (WORD_INFO *winfo)
boolean	init_voca (WORD_INFO *winfo, char *filename, HTK_HMM_INFO *hmminfo, boolean, boolean)
boolean	voca_load_htkdict (FILE *, WORD_INFO *, HTK_HMM_INFO *, boolean)
boolean	voca_load_htkdict_fd (int, WORD_INFO *, HTK_HMM_INFO *, boolean)
boolean	voca_load_htkdict_sd (int, WORD_INFO *, HTK_HMM_INFO *, boolean)
boolean	voca_append_htkdict (char *entry, WORD_INFO *winfo, HTK_HMM_INFO *hmminfo, boolean ignore_tri_conv)
void	voca_append (WORD_INFO *dstinfo, WORD_INFO *srcinfo, int coffset, int woffset)
boolean	voca_load_htkdict_line (char *buf, int vnum, WORD_INFO *winfo, HTK_HMM_INFO *hmminfo, boolean do_conv, boolean *ok_flag)
boolean	voca_mono2tri (WORD_INFO *winfo, HTK_HMM_INFO *hmminfo)
	Convert whole words in word dictionary to word-internal triphone.
WORD_ID	voca_lookup_wid (char *, WORD_INFO *)
WORD_ID *	new_str2wordseq (WORD_INFO *, char *, int *)
char *	cycle_triphone (char *p)
char *	cycle_triphone_flush ()
void	print_voca_info (WORD_INFO *)
void	put_voca (WORD_INFO *winfo, WORD_ID wid)
void	put_voca_err (WORD_INFO *winfo, WORD_ID wid)
void	make_base_phone (HTK_HMM_INFO *hmminfo, WORD_INFO *winfo)
	Build basephone information.
void	print_phone_info (HTK_HMM_INFO *hmminfo)
void	print_all_basephone_detail (HMM_basephone *base)
void	print_all_basephone_name (HMM_basephone *base)
void	test_interword_triphone (HTK_HMM_INFO *hmminfo, WORD_INFO *winfo)

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Detailed Description

Word dictionary for recognition.

Author:

Akinobu LEE

Date:

Sat Feb 12 12:38:13 2005

This file defines data structure for word dictionary used in recognition. It stores word's string, output string, phoneme sequence, transparency. Beginning-of-sentence word and End-of-sentence word guessed from runtime environment is also stored here.

Please note that the N-gram vocabulary is stored in NGRAM_INFO and it can differ from this word dictionary. The reference from the word dictionary to a N-gram vocabulary is done by wton[] member in WORD_INFO. When used with DFA, the wton[] holds a category number to which each word belongs.

Revision

1.1.1.1

Definition in file vocabulary.h.

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Function Documentation

WORD_INFO* word_info_new (   )

Allocate a new word dictionary structure. Returns: pointer to the newly allocated WORD_INFO. Definition at line 34 of file voca_malloc.c. Referenced by initialize_dict().

void word_info_free (  WORD_INFO *  winfo  )

Free all informations in the WORD_INFO. Parameters: winfo  [i/o] word dictionary data to be freed. Definition at line 49 of file voca_malloc.c.

void winfo_init (  WORD_INFO *  winfo  )

Initialize a new word dictionary structure. Parameters: winfo  [i/o] word dictionary to be initialized. Definition at line 78 of file voca_malloc.c. Referenced by voca_load_htkdict(), voca_load_htkdict_fd(), and voca_load_htkdict_sd().

void winfo_expand (  WORD_INFO *  winfo  )

Expand the word dictionary. Parameters: winfo  [i/o] word dictionary to be expanded. Definition at line 108 of file voca_malloc.c. Referenced by voca_append(), voca_append_htkdict(), voca_load_htkdict(), voca_load_htkdict_fd(), and voca_load_htkdict_sd().

boolean init_voca (  WORD_INFO *  winfo, char *  filename, HTK_HMM_INFO *  hmminfo, boolean  not_conv_tri, boolean  force_dict )

Load and initialize a word dictionary. Parameters: winfo  [out] pointer to a word dictionary data to store the read data filename  [in] file name of the word dictionary to read hmminfo  [in] HMM definition data, needed for triphone conversion. not_conv_tri  [in] TRUE if not converting monophone to triphone. force_dict  [in] TRUE if want to ignore the error words in the dictionary Returns: TRUE on success, FALSE on failure. Definition at line 40 of file init_voca.c. Referenced by initialize_dict().

boolean voca_load_htkdict (  FILE *  fp, WORD_INFO *  winfo, HTK_HMM_INFO *  hmminfo, boolean  ignore_tri_conv )

Top function to read word dictionary via file pointer Parameters: fp  [in] file pointer winfo  [out] pointer to word dictionary to store the read data. hmminfo  [in] HTK HMM definition data. if NULL, phonemes are ignored. ignore_tri_conv  [in] TRUE if triphone conversion is ignored Returns: TRUE on success, FALSE on any error word. Definition at line 229 of file voca_load_htkdict.c. Referenced by init_voca().

boolean voca_load_htkdict_fd (  int  fd, WORD_INFO *  winfo, HTK_HMM_INFO *  hmminfo, boolean  ignore_tri_conv )

Top function to read word dictionary via file descriptor. Parameters: fd  [in] file descriptor winfo  [out] pointer to word dictionary to store the read data. hmminfo  [in] HTK HMM definition data. if NULL, phonemes are ignored. ignore_tri_conv  [in] TRUE if triphone conversion is ignored Returns: TRUE on success, FALSE on any error word. Definition at line 269 of file voca_load_htkdict.c.

boolean voca_load_htkdict_sd (  int  sd, WORD_INFO *  winfo, HTK_HMM_INFO *  hmminfo, boolean  ignore_tri_conv )

Top function to read word dictionary via socket descriptor. Parameters: sd  [in] socket descriptor winfo  [out] pointer to word dictionary to store the read data. hmminfo  [in] HTK HMM definition data. if NULL, phonemes are ignored. ignore_tri_conv  [in] TRUE if triphone conversion is ignored Returns: TRUE on success, FALSE on any error word. Definition at line 308 of file voca_load_htkdict.c.

boolean voca_append_htkdict (  char *  entry, WORD_INFO *  winfo, HTK_HMM_INFO *  hmminfo, boolean  ignore_tri_conv )

Append a single entry to the existing word dictionary. Parameters: entry  [in] dictionary entry string to be appended. winfo  [out] pointer to word dictionary to append the data. hmminfo  [in] HTK HMM definition data. if NULL, phonemes are ignored. ignore_tri_conv  [in] TRUE if triphone conversion is ignored Returns: TRUE on success, FALSE on any error word. Definition at line 347 of file voca_load_htkdict.c. Referenced by initialize_dict().

void voca_append (  WORD_INFO *  dstinfo, WORD_INFO *  srcinfo, int  coffset, int  woffset )

Append one word dictionary to other, for multiple grammar handling. Assumes that the same HMM definition is used on both word dictionary. Parameters: dstinfo  [i/o] word dictionary srcinfo  [in] word dictionary to be appended to dst coffset  [in] category id offset in dst where the new data should be stored woffset  [in] word id offset in dst where the new data should be stored Definition at line 640 of file voca_load_htkdict.c.

boolean voca_load_htkdict_line (  char *  buf, int  vnum, WORD_INFO *  winfo, HTK_HMM_INFO *  hmminfo, boolean  do_conv, boolean *  ok_flag )

Sub function to Add a dictionary entry line to the word dictionary. Parameters: buf  [i/o] buffer to hold the input string, will be modified in this function vnum  [in] current number of words in winfo winfo  [out] pointer to word dictionary to append the data. hmminfo  [in] HTK HMM definition data. if NULL, phonemes are ignored. do_conv  [in] TRUE if performing triphone conversion ok_flag  [out] will be set to FALSE if an error occured for this input. Returns: FALSE if buf == "DICEND", else TRUE will be returned. Definition at line 384 of file voca_load_htkdict.c. Referenced by voca_append_htkdict(), voca_load_htkdict(), voca_load_htkdict_fd(), and voca_load_htkdict_sd().

boolean voca_mono2tri (  WORD_INFO *  winfo, HTK_HMM_INFO *  hmminfo )

Convert whole words in word dictionary to word-internal triphone. Normally triphone conversion will be performed directly when reading dictionary file. This function is for post conversion only. Parameters: winfo  [i/o] word dictionary information hmminfo  [in] HTK HMM definition Returns: TRUE on success, FALSE on failure. Definition at line 599 of file voca_load_htkdict.c. Referenced by final_fusion().

WORD_ID voca_lookup_wid (  char *  keyword, WORD_INFO *  winfo )

Look up a word on dictionary by string. Parameters: keyword  [in] keyword to search winfo  [in] word dictionary Returns: the word id if found, or WORD_INVALID if not found. Definition at line 42 of file voca_lookup.c. Referenced by initialize_dict(), and new_str2wordseq().

WORD_ID* new_str2wordseq (  WORD_INFO *  winfo, char *  s, int *  len_return )

Convert string of space-separated word strings to array of word ids. Parameters: winfo  [in] word dictionary s  [in] string of space-separated word strings len_return  [out] number of found words Returns: pointer to a newly allocated word list. Definition at line 116 of file voca_lookup.c.

char* cycle_triphone (  char *  p  )

Return string of triphone name composed from last 3 call. Parameters: p  [in] next phone string Returns: the composed triphone name, or NULL on end. Definition at line 79 of file voca_load_htkdict.c. Referenced by cycle_triphone_flush(), new_str2phseq(), voca_load_htkdict_line(), and voca_mono2tri().

char* cycle_triphone_flush (   )

Flush the triphone buffer and return the last biphone. Returns: the composed last bi-phone name. Definition at line 125 of file voca_load_htkdict.c. Referenced by new_str2phseq(), voca_load_htkdict_line(), and voca_mono2tri().

void print_voca_info (  WORD_INFO *  winfo  )

Output overall word dictionary information to stdout. Parameters: winfo  [in] word dictionary Definition at line 33 of file voca_util.c. Referenced by print_info().

void put_voca (  WORD_INFO *  winfo, WORD_ID  wid )

Output information of a word in dictionary to stdout. Parameters: winfo  [in] word dictionary wid  [in] word id to be output Definition at line 80 of file voca_util.c. Referenced by hmm_check(), make_dfa_voca_ref(), print_info(), and wchmm_add_word().

void put_voca_err (  WORD_INFO *  winfo, WORD_ID  wid )

Output information of a word in dictionary to stderr. Parameters: winfo  [in] word dictionary wid  [in] word id to be output Definition at line 113 of file voca_util.c.

void make_base_phone (  HTK_HMM_INFO *  hmminfo, WORD_INFO *  winfo )

Build basephone information. Extract base phones from HMM definition, mark them whether they appear on word head or word tail, and count the number. Parameters: hmminfo  [i/o] HMM definition information, basephone list will be added. winfo  [in] word dictionary information Definition at line 380 of file chkhmmlist.c. Referenced by hmm_check().

void print_phone_info (  HTK_HMM_INFO *  hmminfo  )

Output general information concerning phone mapping in HMM definition. Parameters: hmminfo  [in] HMM definition data. Definition at line 394 of file chkhmmlist.c. Referenced by hmm_check().

void print_all_basephone_detail (  HMM_basephone *  base  )

Output all basephone informations to stdout. Parameters: base  [in] pointer to the top basephone data holder. Definition at line 105 of file chkhmmlist.c. Referenced by hmm_check().

void print_all_basephone_name (  HMM_basephone *  base  )

Output all basephone names to stdout Parameters: base  [in] pointer to the top basephone data holder. Definition at line 115 of file chkhmmlist.c. Referenced by hmm_check().

void test_interword_triphone (  HTK_HMM_INFO *  hmminfo, WORD_INFO *  winfo )

Top function to check if all the possible triphones on given word dictionary actually exist in the logical HMM. Parameters: hmminfo  [in] HMM definition information, with basephone list. winfo  [in] word dictionary information Definition at line 339 of file chkhmmlist.c. Referenced by hmm_check().

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