ABSTRACT
In recent years, Bayesian network theory is being used in more and more fields on uncertainty study. Bayesian network with intuitive expression ability and strong reasoning ability has provided a theoretical basis for uncertain events or reasoning, so it has been widely used for uncertain events reasoning. Because the Bayesian network is based on probability theory and the probability theory is a more reasonable way to explain uncertain events, Bayesian network is easy to expand the application in different environments and could be used in modular representation of uncertainty.
