専門家モデルに基づく生産スケジューリング・システム

抄録

A knowledge based system was developed to make production line schedules. Many scheduling system were developed with knowledge engineering approaches. However these systems used only human expert's heuristics, which were deterministic problem solving knowledge, that lead to only feasible solutions. In order to get better schedules, we analysed human expert's problem solving process, and developed an integrated method, which includes both human expert's heuristics and a quantitative search guided with a cost evaluation function. For the actual use of the system, it consists of not only scheduler, but also consists of schedule modifier and simulator. The scheduler makes cost efficient schedules automatically. A decision maker can modify the schedules from global point of view by using the modifier. At that time, he can also know cost efficiency of the modified schedules simultaneously, which is evaluated by the simulator. Aided by these functions, "very good" real executable schedules can be got.