org.apache.mahout.vectorizer.encoders

Class ContinuousValueEncoder

java.lang.Object

org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder

org.apache.mahout.vectorizer.encoders.CachingValueEncoder

org.apache.mahout.vectorizer.encoders.ContinuousValueEncoder

Direct Known Subclasses:

CachingContinuousValueEncoder

public class ContinuousValueEncoder
extends CachingValueEncoder

Continuous values are stored in fixed randomized location in the feature vector.

Field Summary

Fields inherited from class org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder

CONTINUOUS_VALUE_HASH_SEED, WORD_LIKE_VALUE_HASH_SEED

Constructor Summary

Constructors

Constructor and Description
ContinuousValueEncoder(String name)

Method Summary

Methods

Modifier and Type	Method and Description
void	addToVector(byte[] originalForm, double weight, Vector data) Adds a value to a vector.
String	asString(String originalForm) Converts a value into a form that would help a human understand the internals of how the value is being interpreted.
protected int	getSeed()
protected double	getWeight(byte[] originalForm, double w)

Methods inherited from class org.apache.mahout.vectorizer.encoders.CachingValueEncoder

hashForProbe, setProbes

Methods inherited from class org.apache.mahout.vectorizer.encoders.FeatureVectorEncoder

addToVector, addToVector, addToVector, bytesForString, getName, getProbes, hash, hash, hash, hash, hash, hashesForProbe, isTraceEnabled, setTraceDictionary, trace, trace

Methods inherited from class java.lang.Object

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

Constructor Detail

ContinuousValueEncoder

public ContinuousValueEncoder(String name)

Method Detail

addToVector

public void addToVector(byte[] originalForm,
               double weight,
               Vector data)

Adds a value to a vector.

Specified by:

addToVector in class FeatureVectorEncoder

Parameters:

originalForm - The original form of the value as a string.

data - The vector to which the value should be added.

getWeight

protected double getWeight(byte[] originalForm,
               double w)

Overrides:

getWeight in class FeatureVectorEncoder

asString

public String asString(String originalForm)

Converts a value into a form that would help a human understand the internals of how the value is being interpreted. For text-like things, this is likely to be a list of the terms found with associated weights (if any).

Specified by:

asString in class FeatureVectorEncoder

Parameters:

originalForm - The original form of the value as a string.

Returns:

A string that a human can read.

getSeed

protected int getSeed()

Specified by:

getSeed in class CachingValueEncoder