1. A method for diagnosing a system, comprising: obtaining a plurality of input parameters from the system, wherein the system generates actual values of one or more output parameters based on the plurality of input parameters; independently deriving values of the one or more output parameters, based on the plurality of input parameters, using a computational model; detecting a divergence between the derived values and the actual values; and identifying respective desired statistical distributions of the plurality of input parameters, based on the actual values of the one or more output parameters, using the computational model.