Bayesian network for assessing the effect of excluding individuals in a database. Bayesian network described earlier in Figure 7. Illustration of a situation in which only the information about the n−1 non-matching individuals in the database, other than the suspect, is considered. The node H illustrates that this information leads to a posterior probability of 1 over the population size minus the excluded individuals for the proposition that the suspect is the source of the crime stain: Pr(H1|X2&…&X
)=1/(N−n + 1)=0.00111. All probabilities are shown in percentages. Further details are as given in the text.