18. The computer program product of claim 16 , wherein the computer readable program code further comprises: computer readable program code for creating the first graphical map from a first topic map; computer readable program code for creating the second graphical map from a second topic map; computer readable program code for creating a combined topic map view comprising a representation of a subset of the instance data of the enterprise industry model and a representation of a subset of the instance data of the legacy model, wherein the combined topic map view indicates a relationship between the first one of the first nodes and the first one of the second nodes.
16. The computer program product of claim 14 , wherein the computer readable program code for calculating the probability score is for one or more of: (a) determining that a user explicitly indicated a connection between the first one of the second nodes and the first one of the first nodes and responsively setting the probability score to one hundred percent; (b) determining from historical information an existence of a plurality of recorded situations in which a map for the first domain includes the first one of the first nodes and in which a map for the second domain includes the first one of the second nodes; computing a first quantity of times representing a sub-quantity of the recorded situations where the first one of the first nodes was connected to the first one of the second nodes; computing a second quantity of times representing a sub-quantity of the recorded situations where the first one of the first nodes was not connected to the second one of the second nodes; and calculating the probability score from the computed first quantity and the computed second quantity; and (c) determining the probability score based on a level of similarity that a first set of nodes having an edge to the first one of the first nodes have to a second set of nodes having an edge to the first one of the second nodes.