Fig. 2From: Normalized L3-based link prediction in protein–protein interaction networksBy modeling an ideal L3 graph, we illustrate the conditions using that would lead the L3 principle to assign the maximum possible score to \(P_{xy}\) (relative to \(P_{xy}\) obtained in non-ideal L3 graphs). a An example of an ideal L3 graph with the four L3-elements x, U, V, and y. b Three measures of how well a (possible non-ideal) L3 graph fits the L3 principle based on its L3-elementsBack to article page