Intelligent Assistance in a Problem Solving Environment for UML Class Diagrams by Combining a Generative System with Constraints

In this paper we present a Problem Solving Environment for UML Class Diagrams. To support the students’ learning process, we use a new approach for the expert system generating the help. This new approach uses a generative expert system enhanced with a constraint based system to combine the advantages of the two specific systems: complete a correct solution proposal to a solution and give hints for correcting an erroneous solution proposal. We aim at developing the combined system in such a way that enables us to provide an authoring system for new tasks. Using the authoring system new tasks can be supported by the system without extension of the expert systems.