This paper presents an up-to-date comprehensive overview of the MACBETH approach to multicriteria decision-aid. It requires only qualitative judgements about di®erences of attractiveness to help a decision maker, or a decision-advisory group, quantify the relative value of options. The approach, based on the additive value model, aims to support interactive learning about evaluation problems and the elaboration of recommendations to prioritize and select options in individual or group decision making processes. A case study based on a real-world application of MACBETH for multicriteria value measurement of IT solutions is presented. It shows how the M-MACBETH decision support system can be used in practice to construct an additive evaluation model. The paper addresses key issues related to structuring the model, building value scales, weighting criteria and sensitivity and robustness analyzes. Reference is also made to applications of MACBETH reported in the scienti¯c literature.

MACBETH (Measuring Attractiveness by a Categorical BasedEvaluation Technique) is a multicriteria decision analysis approach that requires only qualitative judgements about differences of value to help an individual or a group quantify the relative attractiveness of options. We present an up-to-date survey of the mathematical foundations of MACBETH. Reference is also made to real-world applications and an extensive bibliography, spanning back to the early 1990's, is provided.

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MACBETH (measuring attractiveness by a categorical based evaluation technique) is an interactive multicriteria decision aid approach used to build a quantitative (numerical) value model, based on qualitative (nonnumerical) pairwise comparison judgments. The MACBETH value‐elicitation procedure described in this article is composed of an input stage aimed at eliciting a consistent set of qualitative judgments of difference in attractiveness between options, and an output stage aimed at constructing an interval value scale from the set of judgments, which numerically measures the relative attractiveness of options for the person or group that made the judgments.