1. In a computer that accesses a hybrid network representation, the hybrid network representation comprising a plurality of nodes of differing node types, a method comprising: a. Selecting a first node and a second node; b. Determining a plurality of possible pathways between the first node and the second node, where a pathway may be in either the first node towards second node or second node towards first node direction; c. Ordering the plurality of possible pathways according to a link count of each pathway, wherein each link count is equal to a quantity of links observed between each node pathway pair of a comprising pathway; and d. Further ordering the plurality of possible pathways by ranking pathways having a one-to-one link between two pathway nodes, whereby pathways having at least one one-to-one link are ordered for earlier examination than pathways having equal link counts and comprising no one-to-one links.