Stemmer definition

Stemmer





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3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Stemmer \Stem"mer\, n.
     One who, or that which, stems (in any of the senses of the
     verbs).
     [1913 Webster]

From WordNet (r) 2.0 [wn]:



  stemmer
       n 1: a worker who strips the stems from moistened tobacco leaves
            and binds the leaves together into books [syn: {stripper},
             {sprigger}]
       2: a worker who makes or applies stems for artificial flowers
       3: an algorithm for removing inflectional and derivational
          endings in order to reduce word forms to a common stem
          [syn: {stemming algorithm}]
       4: a miner's tamping bar for ramming packing in over a blasting
          charge
       5: a device for removing stems from fruit (as from grapes or
          apples)

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  stemmer
       
           A program or {algorithm}
          which determines the morphological root of a given inflected
          (or, sometimes, derived) word form -- generally a written word
          form.
       
          A stemmer for English, for example, should identify the
          {string} "cats" (and possibly "catlike", "catty" etc.) as
          based on the root "cat", and "stemmer", "stemming", "stemmed"
          as based on "stem".
       
          English stemmers are fairly {trivial} (with only occasional
          problems, such as "dries" being the third-person singular
          present form of the verb "dry", "axes" being the plural of
          "ax" as well as "axis"); but stemmers become harder to design
          as the morphology, orthography, and {character encoding} of
          the target language becomes more complex.  For example, an
          Italian stemmer is more complex than an English one (because
          of more possible verb inflections), a Russian one is more
          complex (more possible noun declensions), a Hebrew one is even
          more complex (a {hairy} writing system), and so on.
       
          Stemmers are common elements in {query} systems, since a user
          who runs a query on "daffodils" probably cares about documents
          that contain the word "daffodil" (without the s).
       
          ({This dictionary} has a rudimentary stemmer which currently
          (April 1997) handles only conversion of plurals to singulars).
       
          (1997-04-09)
       
       

















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