MODELER: Incorporating experiences to support model formulation-A case-based planning approach

Model formulation is key to most mathematical modeling tactics. The enormous amount of time needed to formulate problems is well documented. In this article, we focus on the three elements of model formulation-experience, planning, and opportunism. These elements are used in the implementation of MODELER, a case-based planning system that integrates case-based reasoning methods and an opportunistic control in a blackboard data architecture. An analysis of expert verbalizations provided significant inputs to the design of MODELER.