Package opennlp.tools.doccat

Klasse NGramFeatureGenerator

java.lang.Object

opennlp.tools.doccat.NGramFeatureGenerator

Alle implementierten Schnittstellen:

FeatureGenerator

public class NGramFeatureGenerator
extends Object
implements FeatureGenerator

Generates ngram features for a document.

Siehe auch:

• FeatureGenerator

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
NGramFeatureGenerator()	Instantiates an NGramFeatureGenerator instance with a Bi grams config.
NGramFeatureGenerator(int minGram, int maxGram)	Instantiates an NGramFeatureGenerator instance with configurable ngram parameters.

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
Collection<String>	extractFeatures(String[] text, Map<String,Object> extraInfo)	Extracts features from given text fragments.

Von Klasse geerbte Methoden java.lang.Object

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

Konstruktordetails

NGramFeatureGenerator

public NGramFeatureGenerator(int minGram,
 int maxGram)
                      throws InvalidFormatException

Instantiates an NGramFeatureGenerator instance with configurable ngram parameters.

Parameter:

minGram - The minimum words in ngram features.

maxGram - The maximum words in ngram features.

Löst aus:

InvalidFormatException - Thrown if parameter values are invalid or inconsistent.

NGramFeatureGenerator

public NGramFeatureGenerator()
                      throws InvalidFormatException

Instantiates an NGramFeatureGenerator instance with a Bi grams config.

Löst aus:

InvalidFormatException - Thrown if parameter values are invalid or inconsistent.

Methodendetails

extractFeatures

public Collection<String> extractFeatures(String[] text,
 Map<String,Object> extraInfo)

Beschreibung aus Schnittstelle kopiert: FeatureGenerator

Extracts features from given text fragments.

Angegeben von:

extractFeatures in Schnittstelle FeatureGenerator

Parameter:

text - The text fragments to extract features from

extraInfo - Optional extra information to be used by the FeatureGenerator.

Gibt zurück:

A collection of features.