edu.umass.cs.mallet.base.pipe

Class Csv2FeatureVector

java.lang.Object

edu.umass.cs.mallet.base.pipe.Pipe

edu.umass.cs.mallet.base.pipe.Csv2FeatureVector

All Implemented Interfaces:

Serializable

public class Csv2FeatureVector
extends Pipe

Converts a string of the form feature_1:val_1 feature_2:val_2 ... feature_k:val_k into a (sparse) FeatureVector.

Author:

Gary Huang

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Csv2FeatureVector()
Csv2FeatureVector(int capacity)

Method Summary

Modifier and Type	Method and Description
Instance	pipe(Instance carrier) Convert the data in the given Instance from a CharSequence of sparse feature-value pairs to a FeatureVector

Methods inherited from class edu.umass.cs.mallet.base.pipe.Pipe

getDataAlphabet, getInstanceId, getParent, getParentRoot, getTargetAlphabet, isDataAlphabetSet, isTargetProcessing, pipe, readResolve, resolveDataAlphabet, resolveTargetAlphabet, setDataAlphabet, setParent, setTargetAlphabet, setTargetProcessing

Methods inherited from class java.lang.Object

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

Constructor Detail

Csv2FeatureVector

public Csv2FeatureVector(int capacity)

Csv2FeatureVector

public Csv2FeatureVector()

Method Detail

pipe

public Instance pipe(Instance carrier)
              throws IllegalStateException

Convert the data in the given Instance from a CharSequence of sparse feature-value pairs to a FeatureVector

Specified by:

pipe in class Pipe

Parameters:

carrier - Instance to be processed.

Throws:

IllegalStateException - If Instance.getTarget() is not a Labeling