The invention relates to a method for comparing computer-based and
data-processing models of a complex system, with a first model and a
second model of the system, whereby the models reflect a model of a
system behavior by means of predefined objects which represent activities
and units within the system. The inventive method comprises the steps of
comparing the models and destination of corresponding respective
predefined objects of the first and second model, detecting differences
in attributes of corresponding predefined objects and outputting the
differences to a user. The use of predefined objects, i.e. of objects
that pertain to a known set of types, enables a more efficient comparison
of models than in unstructured models.