ps_latlink_t Struct Reference

Link between DAG nodes. More...

#include <pocketsphinx/lattice.h>

Public Member Functions
POCKETSPHINX_EXPORT int	ps_latlink_times (ps_latlink_t *link, int16 *out_sf)
POCKETSPHINX_EXPORT ps_latnode_t *	ps_latlink_nodes (ps_latlink_t *link, ps_latnode_t **out_src)
POCKETSPHINX_EXPORT const char *	ps_latlink_word (ps_lattice_t *dag, ps_latlink_t *link)
POCKETSPHINX_EXPORT const char *	ps_latlink_baseword (ps_lattice_t *dag, ps_latlink_t *link)
POCKETSPHINX_EXPORT ps_latlink_t *	ps_latlink_pred (ps_latlink_t *link)
POCKETSPHINX_EXPORT int32	ps_latlink_prob (ps_lattice_t *dag, ps_latlink_t *link, int32 *out_ascr)

Detailed Description

Link between DAG nodes.

A link corresponds to a single hypothesized instance of a word with a given start and end point.

Member Function Documentation

ps_latlink_times()

POCKETSPHINX_EXPORT int ps_latlink_times	(	ps_latlink_t *	link,
		int16 *	out_sf
	)

Get start and end times from a lattice link.

Note

these are inclusive - i.e. the last frame of this word is ef, not ef-1.

Parameters

link	Link inquired about.
out_sf	Output: (optional) start frame of this link.

Returns

End frame of this link.

ps_latlink_nodes()

POCKETSPHINX_EXPORT ps_latnode_t * ps_latlink_nodes	(	ps_latlink_t *	link,
		ps_latnode_t **	out_src
	)

Get destination and source nodes from a lattice link

Parameters

link	Link inquired about
out_src	Output: (optional) source node.

Returns

destination node

ps_latlink_word()

POCKETSPHINX_EXPORT const char * ps_latlink_word	(	ps_lattice_t *	dag,
		ps_latlink_t *	link
	)

Get word string from a lattice link.

Parameters

dag	Lattice to which node belongs.
link	Link inquired about

Returns

Word string for this link (possibly a pronunciation variant).

ps_latlink_baseword()

POCKETSPHINX_EXPORT const char * ps_latlink_baseword	(	ps_lattice_t *	dag,
		ps_latlink_t *	link
	)

Get base word string from a lattice link.

Parameters

dag	Lattice to which node belongs.
link	Link inquired about

Returns

Base word string for this link

ps_latlink_pred()

POCKETSPHINX_EXPORT ps_latlink_t * ps_latlink_pred

(

ps_latlink_t *

link

)

Get predecessor link in best path.

Parameters

link	Link inquired about

Returns

Best previous link from bestpath search, if any. Otherwise NULL

ps_latlink_prob()

POCKETSPHINX_EXPORT int32 ps_latlink_prob	(	ps_lattice_t *	dag,
		ps_latlink_t *	link,
		int32 *	out_ascr
	)

Get acoustic score and posterior probability from a lattice link.

Parameters

dag	Lattice to which node belongs.
link	Link inquired about
out_ascr	Output: (optional) acoustic score.

Returns

Posterior probability for this link. Log is expressed in the log-base used in the decoder. To convert to linear floating-point, use logmath_exp(ps_lattice_get_logmath(), pprob).

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

• pocketsphinx/lattice.h