Initialization from transcriptions of character models using linear segmentation

Data Structures
struct	akCharInitializer
	Character model initializer. More...
Defines
#define	ak_char_initializer_free(INIT)   (INIT)->meths->free ( INIT )
	Frees memory.
#define	ak_init_char(INIT, COUNTS, C, FEA)   ak_init_char_seg ( INIT, COUNTS, C, FEA, 0, (FEA)->cols )
	Initializes a character model by linear segmentation of sample.
Functions
akCharInitializer *	ak_char_initializer_new (const akCModel *cmodel, char **err)
	Gets a character model initializer.
void	ak_init_char_seg (akCharInitializer *init, akCMiCounts *counts, const int c, const akFea *fea, const int begin, const int nframes)
	Initializes a character model by linear segmentation of a segment of sample.

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Define Documentation

#define ak_char_initializer_free

(

INIT

)

(INIT)->meths->free ( INIT )

Frees memory.

Frees the memory allocated for character model initializer.

Parameters:

INIT	The character model initializer.

#define ak_init_char	(		INIT,
			COUNTS,
			C,
			FEA
	)		ak_init_char_seg ( INIT, COUNTS, C, FEA, 0, (FEA)->cols )

Initializes a character model by linear segmentation of sample.

This macro is equivalent to ak_init_char_seg but using all frames contained in fea.

Parameters:

INIT	The character cmodel initializer.
COUNTS	Integer counts related to CMODEL used by INIT.
C	The index of the character to be initialized.
FEA	A feature vectors manager, which must contain a sequence of feature vectors of an adequate type for the CMODEL.

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Function Documentation

akCharInitializer* ak_char_initializer_new	(	const akCModel *	cmodel,
		char **	err
	)

Gets a character model initializer.

This function creates a new character model initializer used to initialize character models by linear segmentation. Currently supported types are: Bernoulli and DGaussian.

Parameters:

cmodel	The character models.
err	Pointer to string variable. If not NULL an error message is allocated in the variable in case of error.

Returns:

Character model initializer or NULL in case of error.

void ak_init_char_seg	(	akCharInitializer *	init,
		akCMiCounts *	counts,
		const int	c,
		const akFea *	fea,
		const int	begin,
		const int	nframes
	)

Initializes a character model by linear segmentation of a segment of sample.

This function linearly segments the input frames, which are a segment of the given feature vector sequence, according to the number of states of the specified character model. According to this segmentation, input frames are assigned to states, and then, states counts are consequently increased.

Parameters:

init	Character model initializer.
counts	Integer counts related to cmodel used by the character model initializer.
c	The index of the character to be initialized.
fea	A feature vectors manager, which must contain a sequence of feature vectors of an adequate type for the cmodel.
begin	The first input frame.
nframes	The number of input frames.