edu.washington.cs.knowitall.extractor.conf.featureset

Class DoubleFeatureSet<T>

java.lang.Object

edu.washington.cs.knowitall.extractor.conf.featureset.FeatureSet<T>

edu.washington.cs.knowitall.extractor.conf.featureset.DoubleFeatureSet<T>

Type Parameters:

T -

public class DoubleFeatureSet<T>
extends FeatureSet<T>

Represents a set of boolean feature functions that can be applied to objects of type T. Each feature is represented as a Predicate object, and has a String name.

Author:

afader

Field Summary

Fields inherited from class edu.washington.cs.knowitall.extractor.conf.featureset.FeatureSet

featureNames

Constructor Summary

Constructors

Constructor and Description
DoubleFeatureSet(Map<String,com.google.common.base.Function<T,Double>> givenFeatures) Constructs a new feature set from the given features.

Method Summary

Methods

Modifier and Type	Method and Description
double	featurize(String featureName, T object)
SortedMap<String,Double>	featurize(T object) Returns a feature representation of the given object.
double[]	featurizeToDouble(T object) Returns the feature representation of object as an array of doubles.
List<com.google.common.base.Function<T,Double>>	getFeatures() Returns the features as an ImmutableList, sorted using the default String comparator on the features' names.

Methods inherited from class edu.washington.cs.knowitall.extractor.conf.featureset.FeatureSet

getFeatureNames, getNumFeatures

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleFeatureSet

public DoubleFeatureSet(Map<String,com.google.common.base.Function<T,Double>> givenFeatures)

Constructs a new feature set from the given features.

Parameters:

givenFeatures -

Method Detail

featurize

public SortedMap<String,Double> featurize(T object)

Returns a feature representation of the given object.

Parameters:

object -

Returns:

a sorted map, mapping feature names to boolean values

featurizeToDouble

public double[] featurizeToDouble(T object)

Returns the feature representation of object as an array of doubles. Each value in the array corresponds to a feature (where 1.0 is true and 0.0 is false). The ith value corresponds to the ith feature.

Overrides:

featurizeToDouble in class FeatureSet<T>

Parameters:

object -

Returns:

getFeatures

public List<com.google.common.base.Function<T,Double>> getFeatures()

Returns the features as an ImmutableList, sorted using the default String comparator on the features' names.

Returns:

featurize

public double featurize(String featureName,
               T object)

Specified by:

featurize in class FeatureSet<T>