dragon.ml.seqmodel.feature

Class BasicFeature

java.lang.Object

dragon.ml.seqmodel.feature.BasicFeature

All Implemented Interfaces:

Feature

public class BasicFeature
extends Object
implements Feature

Basic data structure for feature data

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Constructor Summary

Constructors

Constructor and Description
BasicFeature()
BasicFeature(BasicFeature f)
BasicFeature(FeatureIdentifier id, int label, double val)
BasicFeature(FeatureIdentifier id, int prevLabel, int label, double val)
BasicFeature(String id, int label, double val)
BasicFeature(String id, int prevLabel, int label, double val)

Method Summary

Modifier and Type	Method and Description
Feature	copy() Gets a copy of the current feature
void	copyFrom(BasicFeature f)
FeatureIdentifier	getID() One can quickly find out the index of the current feature according to its unique identifier
int	getIndex() The index of this feature from 0..numFeatures-1.
int	getLabel() has to be a label index from 0..numLabels-1
int	getPrevLabel() can be -1 if the feature is a state rather than an edge feature
double	getValue()
void	setID(FeatureIdentifier id) Sets the identitifer
void	setIndex(int index) Sets the index of the feature
void	setLabel(int label) Sets the label of the current feature
void	setPrevLabel(int prevLabel) Sets the label of the starting state of an edge feature if the current feature is an edge feature.
void	setValue(double val) Sets the value to the feature
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicFeature

public BasicFeature()

BasicFeature

public BasicFeature(String id,
                    int label,
                    double val)

BasicFeature

public BasicFeature(FeatureIdentifier id,
                    int label,
                    double val)

BasicFeature

public BasicFeature(String id,
                    int prevLabel,
                    int label,
                    double val)

BasicFeature

public BasicFeature(FeatureIdentifier id,
                    int prevLabel,
                    int label,
                    double val)

BasicFeature

public BasicFeature(BasicFeature f)

Method Detail

copyFrom

public void copyFrom(BasicFeature f)

copy

public Feature copy()

Description copied from interface: Feature

Gets a copy of the current feature

Specified by:

copy in interface Feature

Returns:

the copy the current feature

getIndex

public int getIndex()

Description copied from interface: Feature

The index of this feature from 0..numFeatures-1.

Specified by:

getIndex in interface Feature

Returns:

the index of the feature

setIndex

public void setIndex(int index)

Description copied from interface: Feature

Sets the index of the feature

Specified by:

setIndex in interface Feature

Parameters:

index - the index of the feature

getLabel

public int getLabel()

Description copied from interface: Feature

has to be a label index from 0..numLabels-1

Specified by:

getLabel in interface Feature

Returns:

the label of the feature

setLabel

public void setLabel(int label)

Description copied from interface: Feature

Sets the label of the current feature

Specified by:

setLabel in interface Feature

Parameters:

label - the label of the feature

getPrevLabel

public int getPrevLabel()

Description copied from interface: Feature

can be -1 if the feature is a state rather than an edge feature

Specified by:

getPrevLabel in interface Feature

Returns:

the label of the starting state of an edge feature, otherwise -1

setPrevLabel

public void setPrevLabel(int prevLabel)

Description copied from interface: Feature

Sets the label of the starting state of an edge feature if the current feature is an edge feature.

Specified by:

setPrevLabel in interface Feature

Parameters:

prevLabel - the label of the starting state of an edge feature

getValue

public double getValue()

Specified by:

getValue in interface Feature

Returns:

the value of feature

setValue

public void setValue(double val)

Description copied from interface: Feature

Sets the value to the feature

Specified by:

setValue in interface Feature

Parameters:

val - the value of the feature

toString

public String toString()

Overrides:

toString in class Object

getID

public FeatureIdentifier getID()

Description copied from interface: Feature

One can quickly find out the index of the current feature according to its unique identifier

Specified by:

getID in interface Feature

Returns:

the feature identifier of the current feature

setID

public void setID(FeatureIdentifier id)

Description copied from interface: Feature

Sets the identitifer

Specified by:

setID in interface Feature

Parameters:

id - the feature identifier