There must be a clear connection in the source domain between the known similarities (positive analogy) and the further similarity projected to hold in the target domain (hypothetical analogy).
The shared properties P(S) and P(T) that hold in both the source domain S and the target domain T, forming the basis of an analogical argument
source domain(Formal structure of analogical arguments)
The domain S from which the analogical inference is drawn; a set of objects, properties, relations and functions together with a set of accepted statements about those objects, properties, relations and functions.
target domain(Formal structure of analogical arguments)
The domain T about which an inference is being made by analogy with the source domain; has the same formal structure as the source domain.
Orderly structures emerge out of random low-level processes and the program produces plausible solutions. Copycat thus shows that analogy-making can be modeled as a process akin to perception, even if the program employs mechanisms distinct from those in human perception. The multiconstraint theory and Copycat share the idea that analogical cognition involves cognitive processes that operate below the level of abstract reasoning. Both computational models—to the extent that they are capable of