DECISION-SUPPORT SYSTEM FOR PRODUCTION PLANNING - CONCEPT AND PROTOTYPE

This paper deals with the problem of the decision support system for production planning from the viewpoint of two major functions: physical performance analysis and choice analysis. The first is make clear, through the physical performance analysis, the impact of decision variables on the system performance such as unfilled order rate for market demand, ratio of setup time, average inventory level of finished products and part items, and frequency of replanning. The second is to guide for selecting an alternative or setting the decision variables value, if management can, on the basis of the physical performance analysis results, provide a ranking, preference, or acceptable limits in terms of their contribution or importance to the production system. An example of the prototype DSS for the production planning is also presented from the above-mentioned viewpoint.