alize::StatServer Class Reference

#include <StatServer.h>

Inheritance diagram for alize::StatServer:

Collaboration diagram for alize::StatServer:

List of all members.

Public Member Functions
	StatServer (const Config &c)
	StatServer (const Config &c, MixtureServer &ms)
virtual	~StatServer ()
void	reset ()
lk_t	computeLLK (const Mixture &m, const Feature &f) const
lk_t	computeLLK (const Mixture &m, const Feature &f, unsigned long idx) const
void	computeAllDistribLK (const Feature &f)
const LKVector &	getTopDistribIndexVector () const
void	setTopDistribIndexVector (const ULongVector &indexVect, real_t sumNonTopDistribWeights, real_t sumNonTopDistribLK)
	DEPRECATED (real_t getAccumulatedOccFeatureCount(const Mixture &m))
void	resetLLK (const Mixture &m)
	DEPRECATED (lk_t getLLK(const Mixture &m))
lk_t	computeAndAccumulateLLK (const Mixture &m, const Feature &f, const TopDistribsAction &a=TOP_DISTRIBS_NO_ACTION)
lk_t	computeAndAccumulateLLK (const Mixture &m, const Feature &f, double w, const TopDistribsAction &a=TOP_DISTRIBS_NO_ACTION)
	DEPRECATED (void accumulateLLK(const Mixture &m, double l, double w=1.0))
lk_t	getMeanLLK (const Mixture &m)
	DEPRECATED (lk_t computeAndAccumulateLLK(const Mixture &m))
	DEPRECATED (void resetOcc(const Mixture &m))
	DEPRECATED (real_t computeAndAccumulateOcc(const Mixture &m, const Feature &f))
	DEPRECATED (occ_t *getMeanOccVect(const Mixture &m))
	DEPRECATED (occ_t *getAccumulatedOccVect(const Mixture &m))
	DEPRECATED (occ_t getAccumulatedOcc(const Mixture &m))
	DEPRECATED (void resetEM(const Mixture &m))
	DEPRECATED (occ_t computeAndAccumulateEM(const Mixture &m, const Feature &))
	DEPRECATED (const Mixture &getEM(const Mixture &m))
MixtureStat &	createAndStoreMixtureStat (const Mixture &m)
MixtureGDStat &	createAndStoreMixtureStat (MixtureGD &m)
MixtureGFStat &	createAndStoreMixtureStat (MixtureGF &m)
MixtureGDStat &	createAndStoreMixtureGDStat (Mixture &m)
MixtureGFStat &	createAndStoreMixtureGFStat (Mixture &m)
unsigned long	getMixtureStatCount () const
MixtureStat &	getMixtureStat (unsigned long idx)
MixtureGDStat &	getMixtureGDStat (unsigned long idx)
MixtureGFStat &	getMixtureGFStat (unsigned long idx)
void	deleteMixtureStat (MixtureStat &m)
void	deleteMixtureStat (unsigned long begin, unsigned long end)
void	deleteAllMixtureStat ()
unsigned long	getMixtureStatIndex (MixtureStat &m) const
ViterbiAccum &	createViterbiAccum ()
const String &	getServerName () const
void	setServerName (const String &s)
virtual String	getClassName () const
virtual String	toString () const
const DoubleVector &	getDistribLKVector (const K &) const
LKVector &	getTopDistribIndexVector (const K &)
lk_t	computeLLK (const K &, const Mixture &) const
lk_t	computeLLK (const K &, const Mixture &m, const Feature &f, const TopDistribsAction &a)
lk_t	computeLLK (const K &, const Mixture &m, const Feature &f, const LKVector &lkVect)
Static Public Member Functions
static FrameAccGD	createFrameAccGD ()
static FrameAccGF	createFrameAccGF ()
Private Member Functions
lk_t	computeLLK (lk_t lk) const
MixtureStat &	getMixtureStat (const Mixture &m)
	StatServer (const StatServer &)
const StatServer &	operator= (const StatServer &)
bool	operator== (const StatServer &) const
bool	operator!= (const StatServer &) const
Private Attributes
String	_serverName
const Config &	_config
DoubleVector	_distribLKVect
MixtureServer *	_pMixtureServer
RefVector< MixtureStat >	_mixtureStatVect
RefVector< ViterbiAccum >	_viterbiAccumVect
const Mixture *	_pLastMixture
MixtureStat *	_pLastMixtureStat
LKVector	_topDistribsVect
const lk_t	_minLLK
const lk_t	_maxLLK
Friends
class	TestStatServer
class	TestMixtureGDStat

---

Detailed Description

This class is used to compute all the statistics needed for models training and adapting algorithms as well as for decoding algorithms.

Author:

Frederic Wils frederic.wils@lia.univ-avignon.fr

Version:

1.0

Date:

2003

Definition at line 104 of file StatServer.h.

---

Constructor & Destructor Documentation

alize::StatServer::StatServer

(

const Config &

c )

[explicit]

Creates a StatServer object with a specific configuration

Parameters:

c	configuration of the server The server stores a pointer to the configuration.

alize::StatServer::StatServer	(	const Config &	c,
		MixtureServer &	ms
	)		[explicit]

Creates a StatServer object with a specific configuration

Parameters:

c	configuration of the server The server stores a pointer to the configuration.
ms	a mixture server.

virtual alize::StatServer::~StatServer

(

)

[virtual]

alize::StatServer::StatServer

(

const StatServer &

)

[private]

internal use

---

Member Function Documentation

void alize::StatServer::computeAllDistribLK

(

const Feature &

f )

Computes the log-likelihood between ALL the distributions of the server and the feature. The results are store in an array.
That is useful when many distributions are shared by mixtures. The log-likelihood is just computed once for each distribution.

Parameters:

f	the feature

lk_t alize::StatServer::computeAndAccumulateLLK	(	const Mixture &	m,
		const Feature &	f,
		const TopDistribsAction &	a = TOP_DISTRIBS_NO_ACTION
	)

***** DEPRECATED *****
Like computeLLK() and, in addition, accumulate the log-likelihood. The internal feature counter increases by 1.

Parameters:

m	the mixture
f	the feature
a	flag used to deal with top distributions

Returns:

the log-likelihood for this feature (not the accumulated value)

Exceptions:

Exception

if the dimension of the mixture is not equals to the dimension of the feature

Deprecated:

since 1.06

lk_t alize::StatServer::computeAndAccumulateLLK	(	const Mixture &	m,
		const Feature &	f,
		double	w,
		const TopDistribsAction &	a = TOP_DISTRIBS_NO_ACTION
	)

***** DEPRECATED *****
Like computeLLK() and, in addition, accumulate the log-likelihood. The internal feature counter increases by w.

Parameters:

m	the mixture
f	the feature
w	the weight of the feature
a	flag used to deal with top distributions

Returns:

the log-likelihood for this feature (not multiplied by w)

Exceptions:

Exception

if the dimension of the mixture is not equals to the dimension of the feature

Deprecated:

since 1.06

lk_t alize::StatServer::computeLLK	(	const Mixture &	m,
		const Feature &	f
	)		const

Computes log-likelihood between a mixture and a feature

Parameters:

m	the mixture
f	the feature

Returns:

the log-likelihood

Referenced by alize::ViterbiAccum::computeStateLLK().

lk_t alize::StatServer::computeLLK	(	const K &	,
		const Mixture &
	)		const

lk_t alize::StatServer::computeLLK	(	const K &	,
		const Mixture &	m,
		const Feature &	f,
		const TopDistribsAction &	a
	)

lk_t alize::StatServer::computeLLK	(	const K &	,
		const Mixture &	m,
		const Feature &	f,
		const LKVector &	lkVect
	)

lk_t alize::StatServer::computeLLK	(	const Mixture &	m,
		const Feature &	f,
		unsigned long	idx
	)		const

Computes log-likelihood between a mixture and a single parameter of a feature

Parameters:

m	the mixture
f	the feature
idx	index of the parameter of the feature

Returns:

the log-likelihood

lk_t alize::StatServer::computeLLK

(

lk_t

lk )

const [private]

MixtureGDStat& alize::StatServer::createAndStoreMixtureGDStat

(

Mixture &

m )

Creates, stores in the server and returns an accumulator of statistics for a GD mixture

Parameters:

m	the GD mixture

Returns:

the GD accumulator

Exceptions:

Exception

if m type is not GD

MixtureGFStat& alize::StatServer::createAndStoreMixtureGFStat

(

Mixture &

m )

Creates, stores in the server and returns an accumulator of statistics for a GF mixture

Parameters:

m	the GF mixture

Returns:

the GF accumulator

Exceptions:

Exception

if m type is not GF

MixtureStat& alize::StatServer::createAndStoreMixtureStat

(

const Mixture &

m )

Creates, stores in the server and returns an accumulator of statistics for a generic mixture

Parameters:

m	the mixture

Returns:

the generic accumulator

MixtureGFStat& alize::StatServer::createAndStoreMixtureStat

(

MixtureGF &

m )

Creates, stores in the server and returns an accumulator of statistics for a GF mixture

Parameters:

m	the GF mixture

Returns:

the GF accumulator

MixtureGDStat& alize::StatServer::createAndStoreMixtureStat

(

MixtureGD &

m )

Creates, stores in the server and returns an accumulator of statistics for a GD mixture

Parameters:

m	the GD mixture

Returns:

the GD accumulator

static FrameAccGD alize::StatServer::createFrameAccGD

(

)

[static]

Returns a FrameAccGD object. The objet is not stored inside the server

static FrameAccGF alize::StatServer::createFrameAccGF

(

)

[static]

Returns a FrameAccGF object. The objet is not stored inside the server

ViterbiAccum& alize::StatServer::createViterbiAccum

(

)

Creates and stores a ViterbiAccum object in a pool of objects inside the server.

void alize::StatServer::deleteAllMixtureStat

(

)

Deletes all mixture acumulators

void alize::StatServer::deleteMixtureStat

(

MixtureStat &

m )

Deletes a mixture acumulator

Parameters:

m	the accumulator

void alize::StatServer::deleteMixtureStat	(	unsigned long	begin,
		unsigned long	end
	)

Deletes a mixture acumulator

Parameters:

begin	index of the first accumulator
end	index of the last accumulator

alize::StatServer::DEPRECATED

(

lk_t

getLLKconst Mixture &m )

***** DEPRECATED *****
Returns the last log-likelihood computation stored for a mixture

Parameters:

m	the mixture

Returns:

the log-likelihood computed between the mixture and the last feature

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

real_t

computeAndAccumulateOccconst Mixture &m, const Feature &f )

***** DEPRECATED *****
Computes and accumulates occupation of a feature

Parameters:

f	the feature
m	the mixture

Deprecated:

since 1.06

Returns:

sum of occupations BEFORE normalization

alize::StatServer::DEPRECATED

(

occ_t *

getMeanOccVectconst Mixture &m )

***** DEPRECATED *****
Gets a pointer to the vector of mean occupations.

Parameters:

m	the mixture

Returns:

a pointer

Exceptions:

Exception

if no occ accumulated

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

occ_t *

getAccumulatedOccVectconst Mixture &m )

***** DEPRECATED *****
Gets a pointer to the vector of accumulated occupations.

Parameters:

m	the mixture

Returns:

a pointer

Exceptions:

Exception

if no occ accumulated

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

occ_t

getAccumulatedOccconst Mixture &m )

***** DEPRECATED *****
Computes and return the sum of accumulated occupations

Parameters:

m	the mixture

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

void

resetEMconst Mixture &m )

***** DEPRECATED *****
Reset all internal variables used for EM computation

Parameters:

m	the mixture

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

occ_t

computeAndAccumulateEMconst Mixture &m, const Feature & )

***** DEPRECATED *****
Compute an iteration of EM and accumulate results.

Parameters:

m	the mixture

Exceptions:

Exception	if resetEm() have not been called beforehand
Exception	if something else goes wrong

Returns:

sum of occupations BEFORE normalization

alize::StatServer::DEPRECATED

(

const Mixture &

getEMconst Mixture &m )

***** DEPRECATED *****
Gets the result of EM accumulation.

Parameters:

m	the mixture

Returns:

a constant mixture.

Exceptions:

Exception

if resetEm() have not been called beforehand

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

void

accumulateLLKconst Mixture &m, double l, double w=1.0 )

***** DEPRECATED *****
Accumulates the log-likelihood.
Increase internal feature counter by w

Parameters:

m	the mixture
l	the value to accumulate
w	the weight (0...1)

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

real_t

getAccumulatedOccFeatureCountconst Mixture &m )

***** DEPRECATED *****
Returns the count of accumulated features for occupation

Parameters:

m	the mixture

Returns:

the count of accumulated features

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

lk_t

computeAndAccumulateLLKconst Mixture &m )

***** DEPRECATED *****
Like computeAndAccumulateLLK(Mixture& mix, const Feature& f) but using the internal precalculated log-likelihood array.

Parameters:

m	the mixture

Returns:

the log-likelihood value

Exceptions:

Exception

if no mixture server is connected to this stat server (the log-likelihood array is not computed)

Deprecated:

since 1.06

alize::StatServer::DEPRECATED

(

void

resetOccconst Mixture &m )

***** DEPRECATED *****
Resets internal variables used to store occupation of a feature or a set of features :
> log-likelihood between the mixture and a feature
> accumulation of log-likelihoods
> feature counter

Parameters:

m	the mixture

Deprecated:

since 1.06

virtual String alize::StatServer::getClassName

(

)

const [virtual]

Returns the name of the class

Returns:

the name of the class of the object as a String

Implements alize::Object.

const DoubleVector& alize::StatServer::getDistribLKVector

(

const K &

)

const

lk_t alize::StatServer::getMeanLLK

(

const Mixture &

m )

***** DEPRECATED *****
Computes and returns the mean of the accumulated log-likelihood. The accumulated value is simply divided by the value of the feature counter.

Parameters:

m	the mixture

Returns:

the mean of the accumulated log-likelihood

Exceptions:

Exception

if the mean cannot be computed (no likelihood accumulation)

Deprecated:

since 1.06

MixtureGDStat& alize::StatServer::getMixtureGDStat

(

unsigned long

idx )

Returns the mixture GD accumulator with index i

Parameters:

i

the index

Returns:

the mixture GD accumulator with index i

MixtureGFStat& alize::StatServer::getMixtureGFStat

(

unsigned long

idx )

Returns the mixture GF accumulator with index i

Parameters:

idx

the index

Returns:

the mixture GF accumulator with index i

MixtureStat& alize::StatServer::getMixtureStat

(

unsigned long

idx )

Returns the generic mixture accumulator with index i

Parameters:

idx

the index

Returns:

the generic mixture accumulator with index i

MixtureStat& alize::StatServer::getMixtureStat

(

const Mixture &

m )

[private]

Parameters:

m

unsigned long alize::StatServer::getMixtureStatCount

(

)

const

Returns the count of mixture accumulators stored in the server

Returns:

the count of mixture accumulators stored in the server

unsigned long alize::StatServer::getMixtureStatIndex

(

MixtureStat &

m )

const

Returns the index of a MixtureStat object

Parameters:

m	the MixtureStat object

Returns:

the index of a MixtureStat object

Exceptions:

Exception

if m cannot be found in the server

const String& alize::StatServer::getServerName

(

)

const

LKVector& alize::StatServer::getTopDistribIndexVector

(

const K &

)

const LKVector& alize::StatServer::getTopDistribIndexVector

(

)

const

Returns the best distributions index vector defined after calling computeAndAccumulateLLK(...)

Returns:

the best distributions index vector

bool alize::StatServer::operator!=

(

const StatServer &

)

const [private]

Not implemented

const StatServer& alize::StatServer::operator=

(

const StatServer &

)

[private]

Not implemented

bool alize::StatServer::operator==

(

const StatServer &

)

const [private]

Not implemented

void alize::StatServer::reset

(

)

Resets the server. Delete all temporary objects.

void alize::StatServer::resetLLK

(

const Mixture &

m )

***** DEPRECATED *****
Resets internal variables used to store likelihood computation results between a mixture and a feature or a set of features :
> log-likelihood between the mixture and a feature
> accumulation of log-likelihoods
> feature counter

Parameters:

m	the mixture

Deprecated:

since 1.06

void alize::StatServer::setServerName

(

const String &

s )

void alize::StatServer::setTopDistribIndexVector	(	const ULongVector &	indexVect,
		real_t	sumNonTopDistribWeights,
		real_t	sumNonTopDistribLK
	)

Sets indexes of internal top distrib vector

Parameters:

indexVect	vector of indexes
sumNonTopDistribWeights
sumNonTopDistribLK

virtual String alize::StatServer::toString

(

)

const [virtual]

This method is frequently overridden in the derived classes. If it is not, it returns the name of the class of the object and the address of the object

Returns:

a description of the object

Reimplemented from alize::Object.

---

Friends And Related Function Documentation

friend class TestMixtureGDStat [friend]

Definition at line 107 of file StatServer.h.

friend class TestStatServer [friend]

Definition at line 106 of file StatServer.h.

---

Member Data Documentation

const Config& alize::StatServer::_config [private]

Definition at line 454 of file StatServer.h.

DoubleVector alize::StatServer::_distribLKVect [private]

Definition at line 455 of file StatServer.h.

const lk_t alize::StatServer::_maxLLK [private]

Definition at line 463 of file StatServer.h.

const lk_t alize::StatServer::_minLLK [private]

Definition at line 462 of file StatServer.h.

RefVector<MixtureStat> alize::StatServer::_mixtureStatVect [private]

Definition at line 457 of file StatServer.h.

const Mixture* alize::StatServer::_pLastMixture [private]

Definition at line 459 of file StatServer.h.

MixtureStat* alize::StatServer::_pLastMixtureStat [private]

Definition at line 460 of file StatServer.h.

MixtureServer* alize::StatServer::_pMixtureServer [private]

Definition at line 456 of file StatServer.h.

String alize::StatServer::_serverName [private]

Definition at line 453 of file StatServer.h.

LKVector alize::StatServer::_topDistribsVect [private]

Definition at line 461 of file StatServer.h.

RefVector<ViterbiAccum> alize::StatServer::_viterbiAccumVect [private]

Definition at line 458 of file StatServer.h.

---

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

• include/StatServer.h