edu.umass.cs.mallet.base.pipe
Class AugmentableFeatureVectorLogScale

java.lang.Object
  extended byedu.umass.cs.mallet.base.pipe.Pipe
      extended byedu.umass.cs.mallet.base.pipe.AugmentableFeatureVectorLogScale
All Implemented Interfaces:
java.io.Serializable

public class AugmentableFeatureVectorLogScale
extends Pipe

Given an AugmentableFeatureVector, set those values greater than or equal to 1 to log(value)+1. This is useful when multiple counts should not be treated as independent evidence.

See Also:
Serialized Form

Constructor Summary
AugmentableFeatureVectorLogScale()
           
 
Method Summary
 Instance pipe(Instance carrier)
          Process an Instance.
 
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

AugmentableFeatureVectorLogScale

public AugmentableFeatureVectorLogScale()
Method Detail

pipe

public Instance pipe(Instance carrier)
Description copied from class: Pipe
Process an Instance. This method takes an input Instance, destructively modifies it in some way, and returns it. This is the method by which all pipes are eventually run.

One can create a new concrete subclass of Pipe simply by implementing this method.

Specified by:
pipe in class Pipe
Parameters:
carrier - Instance to be processed.