src/libpocketsphinx/ngram_search.c File Reference

N-Gram based multi-pass search ("FBS"). More...

#include <string.h>
#include <assert.h>
#include <ckd_alloc.h>
#include <listelem_alloc.h>
#include "pocketsphinx_internal.h"
#include "ps_lattice_internal.h"
#include "ngram_search.h"
#include "ngram_search_fwdtree.h"
#include "ngram_search_fwdflat.h"

Go to the source code of this file.

Functions
ps_search_t *	ngram_search_init (cmd_ln_t config, acmod_t acmod, dict_t *dict)
	Initialize the N-Gram search module.
void	ngram_search_free (ps_search_t *search)
	Finalize the N-Gram search module.
int	ngram_search_mark_bptable (ngram_search_t *ngs, int frame_idx)
	Record the current frame's index in the backpointer table.
void	ngram_search_save_bp (ngram_search_t *ngs, int frame_idx, int32 w, int32 score, int32 path, int32 rc)
	Enter a word in the backpointer table.
int	ngram_search_find_exit (ngram_search_t ngs, int frame_idx, int32 out_best_score)
	Find the best word exit for the current frame in the backpointer table.
char const *	ngram_search_bp_hyp (ngram_search_t *ngs, int bpidx)
	Backtrace from a given backpointer index to obtain a word hypothesis.
void	ngram_search_alloc_all_rc (ngram_search_t *ngs, int32 w)
	Allocate last phone channels for all possible right contexts for word w.
void	ngram_search_free_all_rc (ngram_search_t *ngs, int32 w)
	Allocate last phone channels for all possible right contexts for word w.
void	ngram_compute_seg_scores (ngram_search_t *ngs, float32 lwf)
	Compute language and acoustic scores for backpointer table entries.
ps_lattice_t *	ngram_search_lattice (ps_search_t *search)
	Construct a word lattice from the current hypothesis.