de.aitools.ie.keyphraseextraction
Class FrequentPhraseExtractor

java.lang.Object
  de.aitools.ie.keyphraseextraction.KeyphraseExtractor
      de.aitools.ie.keyphraseextraction.FrequentPhraseExtractor

public class FrequentPhraseExtractor
extends KeyphraseExtractor

A simple KeyphraseExtractor to extract frequent phrases. Phrases that contain at least one stopword will be discarded.

Version:

$Id: FrequentPhraseExtractor.java,v 1.1 2011/05/10 19:12:56 trenkman Exp $

Author:

martin.trenkmann@uni-weimar.de

Constructor Summary

FrequentPhraseExtractor(java.util.Locale locale)

Method Summary

java.util.SortedSet<Phrase>	extract(java.lang.String text) Extracts phrases of size one, also known as unigrams.
java.util.SortedSet<Phrase>	extract(java.lang.String text, int k) Extracts phrases of size one, also known as unigrams.
java.util.SortedSet<Phrase>	extract(java.lang.String text, int k, boolean normalize) Extracts phrases of size one, also known as unigrams.

Methods inherited from class de.aitools.ie.keyphraseextraction.KeyphraseExtractor

extract, getLocale, getTopPhrases, setLocale

Methods inherited from class java.lang.Object

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

Constructor Detail

FrequentPhraseExtractor

public FrequentPhraseExtractor(java.util.Locale locale)

Method Detail

extract

public java.util.SortedSet<Phrase> extract(java.lang.String text)

Extracts phrases of size one, also known as unigrams.

Overrides:

extract in class KeyphraseExtractor

Parameters:

text - the text to extract key phrases from.

Returns:

a ranked set of the highest scored key phrases.

See Also:

KeyphraseExtractor.extract(String, int, int, boolean)

extract

public java.util.SortedSet<Phrase> extract(java.lang.String text,
                                           int k)

Extracts phrases of size one, also known as unigrams.

Overrides:

extract in class KeyphraseExtractor

Parameters:

text - the text to extract key phrases from.

k - the maximal number of key phrases to extract.

Returns:

a ranked set of the highest scored key phrases.

See Also:

KeyphraseExtractor.extract(String, int, int, boolean)

extract

public java.util.SortedSet<Phrase> extract(java.lang.String text,
                                           int k,
                                           boolean normalize)

Extracts phrases of size one, also known as unigrams.

Overrides:

extract in class KeyphraseExtractor

Parameters:

text - the text to extract key phrases from.

k - the maximal number of key phrases to extract.

normalize - enables/disables score normalization.

Returns:

a ranked set of the highest scored key phrases.

See Also:

KeyphraseExtractor.extract(String, int, int, boolean)