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:

java.io.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.

See Also:

Serialized Form

Constructor Summary

Csv2FeatureVector()

Csv2FeatureVector(int capacity)

Method Summary

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 java.lang.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:

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