Overview: Decision making is a very complex phenomenon. Modern decision makers must deal with very complex problems which are constantly changing and often ill structured, making modeling and analysis difficult. In order to provide support for the decision makers, computer-based information systems are designed to collect, store, process, and transport information. Recent advances in computer technol ogy, data communications, database systems, office automation, and knowledge engineering have made possible the design of very sophisticated information sys tems. However, rapid technological a
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