Fuzzy Temporal/Categorical Information in Diagnosis

  • Authors:
  • Jacques Wainer;Sandra Sandri

  • Affiliations:
  • Instituto de Computação, Universidade Estadual de Campinas, Campinas, SP 13083-970, Brazil. wainer@dcc.unicamp.br;LAC, INPE, São José dos Campos, SP 12201-970, Brazil. sandri@lac.inpe.br

  • Venue:
  • Journal of Intelligent Information Systems - Special issue on integrating artificial intelligene and database technologies
  • Year:
  • 1999

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper proposes a way of incorporating fuzzy temporal reasoningwithin diagnostic reasoning. Disorders are described as an evolving setof necessary and possible manifestations. Ill-known moments in time,e.g., when a manifestation should start or end, are modeled by fuzzyintervals, which are also used to model the elapsed time betweenevents, e.g., the beginning of a manifestation and its end. Patientinformation about the intensity and times in which manifestationsstarted and ended are also modeled using fuzzy sets. The paperdiscusses many measures of consistency between the patient‘s data andthe disorder model, and defines when the manifestations of the patientcan be explained by a disorder. This work also discusses related issuessuch as the intensity of manifestations and the speed in which thedisorder is evolving, given the patient‘s data, and how to use thatinformation to make predictions about future and past events.