marytts.unitselection.select

Class HalfPhoneFFRTargetCostFunction

java.lang.Object

marytts.unitselection.select.FFRTargetCostFunction

marytts.unitselection.select.HalfPhoneFFRTargetCostFunction

All Implemented Interfaces:

TargetCostFunction

public class HalfPhoneFFRTargetCostFunction
extends FFRTargetCostFunction

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	HalfPhoneFFRTargetCostFunction.TargetCostReporter

Field Summary

Fields

Modifier and Type	Field and Description
protected WeightFunc[]	leftWeightFunction
protected FeatureDefinition	leftWeights
protected WeightFunc[]	rightWeightFunction
protected FeatureDefinition	rightWeights

Fields inherited from class marytts.unitselection.select.FFRTargetCostFunction

cumulWeightedCosts, debugShowCostGraph, featureDefinition, featureVectors, nCostComputations, targetFeatureComputer, weightFunction, weightsNonZero

Constructor Summary

Constructors

Constructor and Description
HalfPhoneFFRTargetCostFunction()

Method Summary

Methods

Modifier and Type	Method and Description
void	computeTargetFeatures(Target target) Compute the features for a given target, and store them in the target.
double	cost(Target target, Unit unit) Compute the goodness-of-fit of a given unit for a given target.
String	getFeature(Unit unit, String featureName) Get the string representation of the feature value associated with the given unit
FeatureVector	getUnitFeatures(Unit unit) Look up the features for a given unit.
void	load(FeatureFileReader featureFileReader, String weightsFile, FeatureProcessorManager featProc)
void	load(String featureFileName, String weightsFile, FeatureProcessorManager featProc) Initialise the data needed to do a target cost computation.

Methods inherited from class marytts.unitselection.select.FFRTargetCostFunction

cost, featureCost, featureCost, getFeatureDefinition, getFeatureVector, getFeatureVectors, load, load, rememberWhichWeightsAreNonZero

Methods inherited from class java.lang.Object

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

Field Detail

leftWeights

protected FeatureDefinition leftWeights

rightWeights

protected FeatureDefinition rightWeights

leftWeightFunction

protected WeightFunc[] leftWeightFunction

rightWeightFunction

protected WeightFunc[] rightWeightFunction

Constructor Detail

HalfPhoneFFRTargetCostFunction

public HalfPhoneFFRTargetCostFunction()

Method Detail

cost

public double cost(Target target,
          Unit unit)

Compute the goodness-of-fit of a given unit for a given target.

Specified by:

cost in interface TargetCostFunction

Overrides:

cost in class FFRTargetCostFunction

Parameters:

target - target

unit - unit

Returns:

a non-negative number; smaller values mean better fit, i.e. smaller cost.

load

public void load(String featureFileName,
        String weightsFile,
        FeatureProcessorManager featProc)
          throws IOException,
                 MaryConfigurationException

Initialise the data needed to do a target cost computation.

Parameters:

featureFileName - name of a file containing the unit features

weightsFile - an optional string containing weights file names -- if non-null, contains two file names separated by the character '|', pointing to feature weights files for left and right units, respectively, that override the ones present in the feature file.

featProc - a feature processor manager which can provide feature processors to compute the features for a target at run time

Throws:

IOException - IOException

MaryConfigurationException - MaryConfigurationException

load

public void load(FeatureFileReader featureFileReader,
        String weightsFile,
        FeatureProcessorManager featProc)
          throws IOException

Throws:

IOException

computeTargetFeatures

public void computeTargetFeatures(Target target)

Compute the features for a given target, and store them in the target.

Specified by:

computeTargetFeatures in interface TargetCostFunction

Overrides:

computeTargetFeatures in class FFRTargetCostFunction

Parameters:

target - the target for which to compute the features

See Also:

Target.getFeatureVector()

getUnitFeatures

public FeatureVector getUnitFeatures(Unit unit)

Look up the features for a given unit.

Parameters:

unit - a unit in the database

Returns:

the FeatureVector for target cost computation associated to this unit

getFeature

public String getFeature(Unit unit,
                String featureName)

Get the string representation of the feature value associated with the given unit

Specified by:

getFeature in interface TargetCostFunction

Overrides:

getFeature in class FFRTargetCostFunction

Parameters:

unit - the unit whose feature value is requested

featureName - name of the feature requested

Returns:

a string representation of the feature value

Throws:

IllegalArgumentException - if featureName is not a known feature