An overview of structure priors. Comparison of edge weights suggested by Heckerman et al. , Imoto et al.  and Bernard et al. . Rows correspond to prior information. In the left two examples the prior can be described as binary, while on the right it is expressed as a p-value derived from a second data set. The entries in the table are the weights κ
for each edge depending on whether G agrees with or not. The middle table holds ξ1 <ξ2, i.e. edges with motif evidence contribute more than edges without. The structure prior is then a product over the weights for all edges.