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A model management system (MMS) is one component of a generalized decision support system (DSS) architecture which provides for the creation, storage, manipulation and access of models. Several significant research opportunities exist concerning artificial intelligence application for MMS to enhance its major functions. Thus, here the existing literature is surveyed and categorized based its treatment of model representation and model manipulation functions. With increasing use of DSSs by industrial engineers, it is time for industrial engineers to examine what is currently happening in this important area of information technology.

Most group problems are complex and unstructured and are difficult to find solutions. GDSS, systems for group decision making support, have more concentrated on the development of technological factor such as communication support, electronic meeting support, etc. And there have been relatively few researches about group problem modeling and group decision-aid. We cannot guarantee the value of GDSS just with the support in technological basis. The AHP has been suggested as an group problem modeling tool. In this paper authors applied AHP in real world group problems, investigated its value, and suggested the elements of GDSS software. Keywords: GDSS(Group Decision Support Systems), DSS(Decision Support Systems), AHP(Analytic Hierarchy Process)