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A large number of data is needed by the computation of the objective Bayesian network, but the data is hard to get in actual computation. The calculation method of Bayesian network was improved in this paper, and the fuzzy-precise Bayesian network was obtained. Then, the fuzzy-precise Bayesian network was used to reason Bayesian network model when the data is limited. The security of passengers during shipping is affected by various factors, and it is hard to predict and control. The indexdoi:10.1155/2014/158652 pmid:25254227 pmcid:PMC4164846 fatcat:fxtenqd6czguffvwmrkqrnkgh4