Package weka.core.stemmers

Class LovinsStemmer

java.lang.Object
weka.core.stemmers.LovinsStemmer
All Implemented Interfaces:
Serializable, RevisionHandler, Stemmer, TechnicalInformationHandler
Direct Known Subclasses:
IteratedLovinsStemmer
public class LovinsStemmer extends Object implements Stemmer, TechnicalInformationHandler
A stemmer based on the Lovins stemmer, described here:

Julie Beth Lovins (1968). Development of a stemming algorithm. Mechanical Translation and Computational Linguistics. 11:22-31.

BibTeX: 

 @article{Lovins1968,
    author = {Julie Beth Lovins},
    journal = {Mechanical Translation and Computational Linguistics},
    pages = {22-31},
    title = {Development of a stemming algorithm},
    volume = {11},
    year = {1968}
 }

Version:
$Revision: 8034 $
Author:
Eibe Frank (eibe at cs dot waikato dot ac dot nz)
See Also:

  • Constructor Details

    • LovinsStemmer

      public LovinsStemmer()

  • Method Details

    • globalInfo

      public String globalInfo()
      Returns a string describing the stemmer
      Returns:
      a description suitable for displaying in the explorer/experimenter gui

    • getTechnicalInformation

      public TechnicalInformation getTechnicalInformation()
      Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
      Specified by:
      getTechnicalInformation in interface TechnicalInformationHandler
      Returns:
      the technical information about this class

    • stem

      public String stem(String word)
      Returns the stemmed version of the given word. Word is converted to lower case before stemming.
      Specified by:
      stem in interface Stemmer
      Parameters:
      word - a string consisting of a single word
      Returns:
      the stemmed word

    • stemString

      public String stemString(String str)
      Stems everything in the given string. String is converted to lower case before stemming.
      Parameters:
      str - the string to stem
      Returns:
      the processed string

    • toString

      public String toString()
      returns a string representation of the stemmer
      Overrides:
      toString in class Object
      Returns:
      a string representation of the stemmer

    • getRevision

      public String getRevision()
      Returns the revision string.
      Specified by:
      getRevision in interface RevisionHandler
      Returns:
      the revision

    • main

      public static void main(String[] args)
      Runs the stemmer with the given options
      Parameters:
      args - the options