Knowledge Representation by Scripts in an Expert Interface

System identification demands skill and experience, and the validity of the results strongly depends on the user\´sknowledge. For this reason a help facility that uses domain specific knowledge about system identification is needed. This paper deals with the representation of knowledge in an expert interface for system identification, using the interactive identification package "Idpac". The concept of scripts is introduced. A small system has been implemented and a description of it is given.