A probabilistic model for stemmer generation

  • Authors:
  • Michela Bacchin;Nicola Ferro;Massimo Melucci

  • Affiliations:
  • Department of Information Engineering, University of Padova, via Gradenigo, 6/a, Padova 35131, Italy;Department of Information Engineering, University of Padova, via Gradenigo, 6/a, Padova 35131, Italy;Department of Information Engineering, University of Padova, via Gradenigo, 6/a, Padova 35131, Italy

  • Venue:
  • Information Processing and Management: an International Journal - Special issue: An Asian digital libraries perspective
  • Year:
  • 2005

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Abstract

In this paper we will present a language-independent probabilistic model which can automatically generate stemmers. Stemmers can improve the retrieval effectiveness of information retrieval systems, however the designing and the implementation of stemmers requires a laborious amount of effort due to the fact that documents and queries are often written or spoken in several different languages. The probabilistic model proposed in this paper aims at the development of stemmers used for several languages. The proposed model describes the mutual reinforcement relationship between stems and derivations and then provides a probabilistic interpretation. A series of experiments shows that the stemmers generated by the probabilistic model are as effective as the ones based on linguistic knowledge.