Article Dans Une Revue Control Engineering Practice Année : 1994

Possibility theory and data fusion in poorly informed environments

Résumé

Some data fusion problems seem to be naturally handled in the framework of possibility theory. As an example, the problem of modelling expert knowledge about numerical parameters in the field of reliability is reconsidered in that framework. Usually expert opinions about quantities such as failure rates are modelled, assessed and pooled in the setting of probability theory. This paper formulates a model of expert opinion by means of possibility distributions that are thought to better reflect the imprecision pervading expert judgements. They are weak substitutes to unreachable subjective probabilities. Assessment evaluation is carried out in terms of accuracy and level of precision, respectively measured by membership grades and fuzzy cardinality indices. Lastly, elaborating from previous works on data fusion using possibility theory, various pooling modes are presented, with their formal model under various assumptions concerning the sources of information. This framework is particularly suitable when sources are heterogeneous and statistical data are not available.

Fichier principal
Vignette du fichier
Possibility theory and data fusion in poorly informed environments.pdf (84.11 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04054185 , version 1 (03-04-2023)

Licence

Identifiants

Citer

Didier Dubois, Henri Prade. Possibility theory and data fusion in poorly informed environments. Control Engineering Practice, 1994, 2 (5), pp.811--823. ⟨10.1016/0967-0661(94)90346-8⟩. ⟨hal-04054185⟩
123 Consultations
201 Téléchargements

Altmetric

Partager

  • More