Considering alternative choices of missing edges, {𝛿𝑨 𝑖 }, as equally likely a priori allows to replace 𝑃(𝛿𝑨|𝑨 + 𝛿𝑨) as simply ∝ 1 in above equation . Thus it is possible to compute the posterior up to a normalisation constant. If, however, comparing the relative probability between a set of missing edges, {𝛿𝑨 𝑖 }, via their likelihood ratio this constant is irrelevant :