A Data Warehouse that Gathers Several Formalisms to Capture Data Heterogeneity and Incompleteness in the Field of Food Microbiological Safety

نویسندگان

  • Patrice Buche
  • Juliette Dibie-Barthélemy
  • Ollivier Haemmerlé
  • Rallou Thomopoulos
چکیده

Résumé. Notre travail porte sur la conception d’un entrepôt de données dans le domaine de l’analyse du risque alimentaire. Les données expérimentales stockées dans cet entrepôt ont trois caractéristiques principales qui ont guidé la conception de l’entrepôt : elles sont hétérogènes, elles peuvent être imprécises, et l’entrepôt est par nature incomplet. Nous proposons d’utiliser trois modèles de données : le modèle relationnel, le modèle des graphes conceptuels et le modèle XML. Ces modèles ont été étendus afin de pouvoir représenter des données imprécises sous la forme de distributions de possibilités. Les bases de données construites sur ces modèles sont interrogés simultanément avec le langage MIEL++. Dans ce langage, les préférences de l’utilisateur sont représentées par des sous-ensembles flous. Des techniques de mise en correspondance floue sont utilisées pour comparer préférences et données imprécises.

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تاریخ انتشار 2012