A Bayesian sampling approach to decision fusion using hierarchical models

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53 Scopus citations

Abstract

Data fusion and distributed detection have been studied extensively, and numerous results have been obtained during the past two decades. In this paper, the design of fusion rule for distributed detection problems is re-examined, and a novel approach using Bayesian inference tools is proposed. Specifically, the decision fusion problem is reformulated using hierarchical models, and a Gibbs sampler is proposed to perform posterior probability-based fusion. Performancewise, it is essentially identical to the optimal likelihood-based fusion rule whenever it exists. The true merit of this approach is its applicability to various complex situations, e.g., in dealing with unknown signal/noise statistics where the likelihood-based fusion rule may not be easy to obtain or may not even exist.

Original languageEnglish (US)
Pages (from-to)1809-1818
Number of pages10
JournalIEEE Transactions on Signal Processing
Volume50
Issue number8
DOIs
StatePublished - Aug 1 2002

Keywords

  • Bayesian inference
  • Decision fusion
  • Gibbs sampler
  • Hierarchical models

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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