com.aliasi.features

Class FeatureExtractorFilter<E>

java.lang.Object

com.aliasi.features.FeatureExtractorFilter<E>

Type Parameters:

E - The type of objects whose features are extracted.

All Implemented Interfaces:

FeatureExtractor<E>

Direct Known Subclasses:

CacheFeatureExtractor, LengthNormFeatureExtractor, ModifiedFeatureExtractor, ZScoreFeatureExtractor

public class FeatureExtractorFilter<E>
extends Object
implements FeatureExtractor<E>

A FeatureExtractorFilter contains a reference to another feature extractor. The typical use is as a superclass of a feature extractor that modifies a base feature extractor in some way.

Since:

Lingpipe3.8

Version:

3.8

Author:

Bob Carpenter

Constructor Summary

Constructors

Constructor and Description
FeatureExtractorFilter(FeatureExtractor<? super E> extractor) Construct a feature extractor filter from the specified feature extractor.

Method Summary

Modifier and Type	Method and Description
FeatureExtractor<? super E>	baseExtractor() Returns the contained feature extractor.
Map<String,? extends Number>	features(E in) Return the features extracted by the contained feature extractor.

Methods inherited from class java.lang.Object

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

Constructor Detail

FeatureExtractorFilter

public FeatureExtractorFilter(FeatureExtractor<? super E> extractor)

Construct a feature extractor filter from the specified feature extractor.

Parameters:

extractor - Contained feature extractor.

Method Detail

features

public Map<String,? extends Number> features(E in)

Return the features extracted by the contained feature extractor.

Specified by:

features in interface FeatureExtractor<E>

Parameters:

in - Input to be converted to a feature vector.

Returns:

The map representing the feature vector for the input object.

baseExtractor

public FeatureExtractor<? super E> baseExtractor()

Returns the contained feature extractor.

Returns:

The contained feature extractor.