org.openimaj.feature

Class BagOfWordsFeatureExtractor

java.lang.Object

org.openimaj.feature.BagOfWordsFeatureExtractor

All Implemented Interfaces:

FeatureExtractor<SparseFloatFV,List<String>>

public class BagOfWordsFeatureExtractor
extends Object
implements FeatureExtractor<SparseFloatFV,List<String>>

An extractor which gives SparseFloatFV instances for a list of words. This is a simple unweighted count.

Author:

Sina Samangooei (ss@ecs.soton.ac.uk)

Constructor Summary

Constructors

Constructor and Description
BagOfWordsFeatureExtractor(List<String> dictionary) A set of words which are used for their index and therefore feature vector entry of a given word.

Method Summary

Modifier and Type	Method and Description
SparseFloatFV	extractFeature(List<String> object) Extract features from an object and return them.

Methods inherited from class java.lang.Object

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

Constructor Detail

BagOfWordsFeatureExtractor

public BagOfWordsFeatureExtractor(List<String> dictionary)

A set of words which are used for their index and therefore feature vector entry of a given word.

Parameters:

dictionary -

Method Detail

extractFeature

public SparseFloatFV extractFeature(List<String> object)

Description copied from interface: FeatureExtractor

Extract features from an object and return them.

Specified by:

extractFeature in interface FeatureExtractor<SparseFloatFV,List<String>>

Parameters:

object - the object to extract from

Returns:

the extracted feature