The invention relates to a method and a system for detecting at least one
partial model of a model pertaining to a system. A state of the system is
described by state variables. At least on e of the state variables is a
discrete state variable. Several value sets of the state variables are
detected. A probability distribution for the state variables is detected
by using the sets. The partial model of the system is detected using the
sets and the probability distribution of the state variables and a
statistical learning method. The partial model describes the system under
the condition of the probability distribution for the state variables.