Control reasoning based on goal relationships within the blackboard framework QBB

The goal-oriented modeling of a diagnosis problem in the VLSI-design domain, namely the VLSI chip-architecture selection, is presented. To realize a more flexible and goal-oriented approach to diagnosis the framework QBB is used. QBB is based on the blackboard model. The description of the blackboard framework QBB is organized according to the three organizational components of blackboard systems, namely the blackboard, the knowledge sources, and the control component. Special emphasis is laid on the control component that follows a qualitative goal-oriented approach to control. Quality goals, their priorities, the goal relationships, and the informal dependencies are an essential part of a dynamic control plan. Compared to most other blackboard systems an extended, more detailed goal structure is maintained providing for more flexible, more explainable, and more transparent control decisions.<>