Next: Merits Up: Model Updating in the Previous: Introduction . ... In most cases, e.g., using the data constraint, the MEM solution is unique, depending on the model. ... However, any change of the model will result in the change of the solution even if the data constraints remain the same. ... The method is implemented by forming the objective function and using the Newton method to find ME solutions, i.e., to maximize for particular values of the Lagrange multipliers and (inner iteration). ...