ISAAP - Interactive Specification and Analysis of Aspiration-Based Preferences.
Model based Decision Support Systems (DSS) often use multi-criteria optimization for selecting Pareto-optimal solutions. Such a selection is based on interactive specification of user preferences. This can be done by specification of aspiration and reservation levels for criteria. Diverse graphical user interface could be used for the specification of these levels as well as for the interpretation of results. In the approach presented in this paper the specified aspiration and reservation levels are used for generation of component achievement functions for corresponding criteria, which reflect the degree of satisfaction with given values of criteria. The paper outlines the methodological background and modular structure of a tool (called NCMA) for multi-criteria analysis of decision problems that can be represented as linear programming (LP) or mixed integer programming (MIP) problems. The MCMA has been used at IIASA for the analysis of decision problems in water quality management and land use for sustainable development planning. These experiences have shown that the MCMA tool is applicable also to a large LP and MIP problems. Other implementations of the same methodology have also been used for the analysis of non-linear problems in several engineering applications. specification of user preferences is described. The presented methodology of multi-criteria model analysis and the documented software is illustrated by a detailed tutorial example.
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