In everyday life we continually make decisions, even if we do not think of that. A flexible framework for group decision support on PCs in Microsoft Windows environment was developed in the Department of Operations Research and Decision Systems. By experience with real life decision problems, the requirements arose for improving the techniques to visualize the steps of decision processes and present the results.
Visualization seeks to provide suitable representations for complex problems.
Modern decision support systems intend to offer a user-friendly software environment to describe the decision problem, to solve it and to present the results in an attractive and clear visual form. Although decision models can grow and spread quite large, no graphical representation scheme is commonly used in decision systems. In the conceptual model, the criteria have a natural graphical representation by using a software module to build the trees of criteria based on the relations and hierarchy between them. Spreadsheets have proven to be a very useful aid in solving problems. So, they were applied by formulating decision problems in the case of one decision maker, by collecting data and refining the system of weighing.