On generalized fuzzy belief functions in infinite spaces

  • Authors:
  • Wei-Zhi Wu;Yee Leung;Ju-Sheng Mi

  • Affiliations:
  • School of Mathematics, Physics and Information Science, Zhejiang Ocean University, Zhoushan, China;Department of Geography and Resource Management, Center for Environmental Policy and Resource Management, Institute of Space and Earth Information Science, The Chinese University of Hong Kong, Sha ...;College of Mathematics and Information Science, Hebei Normal University, Hebei, China

  • Venue:
  • IEEE Transactions on Fuzzy Systems
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

Determined by a fuzzy implication operator, a general type of fuzzy belief structure and its induced dual pair of fuzzy belief and plausibility functions in infinite universes of discourse are first defined. Relationship between the belief-structure-based and the belief-space-based fuzzy Dempster-Shafer models is then established. It is shown that the lower and upper fuzzy probabilities induced by the fuzzy belief space yield a dual pair of fuzzy belief and plausibility functions. For any fuzzy belief structure, there must exist a fuzzy belief space such that the fuzzy belief and plausibility functions defined by the given fuzzy belief structure are just the lower and upper fuzzy probabilities induced by the fuzzy belief space, respectively. Essential properties of the fuzzy belief and plausibility functions are also examined. The fuzzy belief and plausibility functions are, respectively, a fuzzy monotone Choquet capacity and a fuzzy alternating Choquet capacity of infinite order.