dragon.ml.seqmodel.feature

Class AbstractFeatureTypeWrapper

java.lang.Object

dragon.ml.seqmodel.feature.AbstractFeatureTypeWrapper

All Implemented Interfaces:

FeatureType

Direct Known Subclasses:

FeatureTypePosition, FeatureTypeStateLoop, FeatureTypeTokenLoop, FeatureTypeWindow

public abstract class AbstractFeatureTypeWrapper
extends Object
implements FeatureType

Abstract class for feature type wrapper

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields

Modifier and Type	Field and Description
protected FeatureType	ftype

Constructor Summary

Constructors

Constructor and Description
AbstractFeatureTypeWrapper(FeatureType ftype)

Method Summary

Modifier and Type	Method and Description
int	getTypeID() Gets the unique id of the current feature type.
boolean	hasNext() Tests if next feature exists
boolean	needTraining() Tests if the current feature type needs training
Feature	next() Gets the next feature
boolean	readTrainingResult() Reads the training result in testing mode
boolean	saveTrainingResult() Saves the training results in training mode
void	setTypeID(int typeID) Sets the id of the current feature type
boolean	startScanFeaturesAt(DataSequence data, int startPos, int endPos) Starts scanning features of the given segment of a sequence
boolean	supportSegment() Tests if the feature type supports generating features for segments.
boolean	train(Dataset data) Trains the feature types with the labeled training dataset

Methods inherited from class java.lang.Object

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

Field Detail

ftype

protected FeatureType ftype

Constructor Detail

AbstractFeatureTypeWrapper

public AbstractFeatureTypeWrapper(FeatureType ftype)

Method Detail

startScanFeaturesAt

public boolean startScanFeaturesAt(DataSequence data,
                                   int startPos,
                                   int endPos)

Description copied from interface: FeatureType

Starts scanning features of the given segment of a sequence

Specified by:

startScanFeaturesAt in interface FeatureType

Parameters:

data - the sequence

startPos - the start position of the segment

endPos - the end position of the segment

Returns:

true if successfully

hasNext

public boolean hasNext()

Description copied from interface: FeatureType

Tests if next feature exists

Specified by:

hasNext in interface FeatureType

Returns:

true if next feature exists

next

public Feature next()

Description copied from interface: FeatureType

Gets the next feature

Specified by:

next in interface FeatureType

Returns:

the next feature if any

needTraining

public boolean needTraining()

Description copied from interface: FeatureType

Tests if the current feature type needs training

Specified by:

needTraining in interface FeatureType

Returns:

true if the feature type needs training

train

public boolean train(Dataset data)

Description copied from interface: FeatureType

Trains the feature types with the labeled training dataset

Specified by:

train in interface FeatureType

Parameters:

data - the dataset for training

Returns:

true if trained successfully

readTrainingResult

public boolean readTrainingResult()

Description copied from interface: FeatureType

Reads the training result in testing mode

Specified by:

readTrainingResult in interface FeatureType

Returns:

training result

saveTrainingResult

public boolean saveTrainingResult()

Description copied from interface: FeatureType

Saves the training results in training mode

Specified by:

saveTrainingResult in interface FeatureType

Returns:

true if saved successfully

getTypeID

public int getTypeID()

Description copied from interface: FeatureType

Gets the unique id of the current feature type.

Specified by:

getTypeID in interface FeatureType

Returns:

type ID

setTypeID

public void setTypeID(int typeID)

Description copied from interface: FeatureType

Sets the id of the current feature type

Specified by:

setTypeID in interface FeatureType

Parameters:

typeID - the type id

supportSegment

public boolean supportSegment()

Description copied from interface: FeatureType

Tests if the feature type supports generating features for segments.

Specified by:

supportSegment in interface FeatureType

Returns:

true if supported