edu.cmu.sphinx.trainer

Class BaumWelchLearner

java.lang.Object

edu.cmu.sphinx.trainer.BaumWelchLearner

All Implemented Interfaces:

Learner, Configurable

public class BaumWelchLearner
extends java.lang.Object
implements Learner

Provides mechanisms for computing statistics given a set of states and input data.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DATA_SOURCE
static java.lang.String	FRONT_END

Constructor Summary

Constructors

Constructor and Description
BaumWelchLearner()

Method Summary

Modifier and Type	Method and Description
protected FrontEnd	getFrontEnd()
TrainerScore[]	getScore() Gets the TrainerScore for the next frame
void	initializeComputation(Utterance utterance, UtteranceGraph graph) Initializes computation for current utterance and utterance graph.
void	newProperties(PropertySheet ps) This method is called when this configurable component needs to be reconfigured.
void	setGraph(UtteranceGraph graph) Implements the setGraph method.
void	setUtterance(Utterance utterance) Sets the learner to use a utterance.
void	start() Starts the Learner.
void	stop() Stops the Learner.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FRONT_END

@S4Component(type=FrontEnd.class)
public static final java.lang.String FRONT_END

See Also:

Constant Field Values

DATA_SOURCE

@S4Component(type=StreamCepstrumSource.class)
public static final java.lang.String DATA_SOURCE

See Also:

Constant Field Values

Constructor Detail

BaumWelchLearner

public BaumWelchLearner()

Method Detail

newProperties

public void newProperties(PropertySheet ps)
                   throws PropertyException

Description copied from interface: Configurable

This method is called when this configurable component needs to be reconfigured.

Specified by:

newProperties in interface Configurable

Parameters:

ps - a property sheet holding the new data

Throws:

PropertyException - if there is a problem with the properties.

getFrontEnd

protected FrontEnd getFrontEnd()

setUtterance

public void setUtterance(Utterance utterance)
                  throws java.io.IOException

Sets the learner to use a utterance.

Specified by:

setUtterance in interface Learner

Parameters:

utterance - the utterance

Throws:

java.io.IOException - if error occurred

start

public void start()

Starts the Learner.

Specified by:

start in interface Learner

stop

public void stop()

Stops the Learner.

Specified by:

stop in interface Learner

initializeComputation

public void initializeComputation(Utterance utterance,
                                  UtteranceGraph graph)
                           throws java.io.IOException

Initializes computation for current utterance and utterance graph.

Specified by:

initializeComputation in interface Learner

Parameters:

utterance - the current utterance

graph - the current utterance graph

Throws:

java.io.IOException - if exception occured

setGraph

public void setGraph(UtteranceGraph graph)

Implements the setGraph method.

Specified by:

setGraph in interface Learner

Parameters:

graph - the graph

getScore

public TrainerScore[] getScore()

Gets the TrainerScore for the next frame

Specified by:

getScore in interface Learner

Returns:

the TrainerScore, or null if EOF was found