Analele Universităţii "Dunărea de Jos" Galaţi: Fascicula III, Electrotehnică, Electronică, Automatică, Informatică (Dec 2007)

Automatic modeling of the linguistic values for database fuzzy querying

  • Diana STEFANESCU,
  • Laurentiu FRANGU,
  • Cornelia TUDORIE

Journal volume & issue
Vol. 2007, no. 1
pp. 25 – 30

Abstract

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In order to evaluate vague queries, each linguistic term is considered according to its fuzzy model. Usually, the linguistic terms are defined as fuzzy sets, during a classical knowledge acquisition off-line process. But they can also be automatically extracted from the actual content of the database, by an online process. In at least two situations, automatically modeling the linguistic values would be very useful: first, to simplify the knowledge engineer’s task by extracting the definitions from the database content; and second, where mandatory, to dynamically define the linguistic values in complex criteria queries evaluation. Procedures to automatically extract the fuzzy model of the linguistic values from the existing data are presented in this paper.

Keywords