dragon.ml.seqmodel.feature

Interface Feature

All Known Implementing Classes:

BasicFeature

public interface Feature

A single feature returned by the FeatureGenerator needs to support this interface.

Author:

Sunita Sarawagi

Method Summary

Modifier and Type	Method and Description
Feature	copy() Gets a copy of the current feature
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

Method Detail

getID

FeatureIdentifier getID()

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

Returns:

the feature identifier of the current feature

setID

void setID(FeatureIdentifier id)

Sets the identitifer

Parameters:

id - the feature identifier

copy

Feature copy()

Gets a copy of the current feature

Returns:

the copy the current feature

getIndex

int getIndex()

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

Returns:

the index of the feature

setIndex

void setIndex(int index)

Sets the index of the feature

Parameters:

index - the index of the feature

getLabel

int getLabel()

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

Returns:

the label of the feature

setLabel

void setLabel(int label)

Sets the label of the current feature

Parameters:

label - the label of the feature

getPrevLabel

int getPrevLabel()

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

Returns:

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

setPrevLabel

void setPrevLabel(int prevLabel)

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

Parameters:

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

getValue

double getValue()

Returns:

the value of feature

setValue

void setValue(double val)

Sets the value to the feature

Parameters:

val - the value of the feature