A Bayesian Neural Network Model with Extensions a Bayesian Neural Network Model with Extensions

This report deals with a Bayesian neural network in a classiier context. In our network model, the units represent stochastic events, and the state of the units are related to the probability of these events. The basic Bayesian model is a one-layer neural network, which calculates the posterior probabilities of events, given some observed, independent events. The formulas underlying this network are examined, and generalized in order to make the network handle graded input, n:ary attributes, and continuous valued attributes. The one-layer model is then extended to a multi-layer architecture, to handle dependencies between input attributes. A few variations of this multi-layer Bayesian neural network are discussed. The nal result is a fairly general multi-layer Bayesian neural network, capable of handling discrete as well as continuous valued attributes.