Thomas L. Saaty (1926 - 2017) »


Tutorial 03: Creating a ratings model

Short Description

In this tutorial you will learn how to create a ratings model.

  • The ratings approach is used when there is a large number of alternatives to be evaluated.
    • For example, if we want to evaluate 50 employees, then 1,225 (50(49)/2) pairwise comparisons, would be required for each criterion if we used a pairwise comparison model and not a ratings model.
  • The ratings approach requires setting up a ratings scale under each criterion.
    • For example, in evaluating an employee’s organizational skills, a manager could rate the employee as either Excellent, Very Good, Good, Fair, or Poor.
  • Pairwise comparisons are needed to determine the relative importance of each ratings scale category (intensity).
  • You may decide to use different intensities/scales for each criterion.
  • It is important to keep in mind that alternatives are not pairwise compared in a rating model, rather alternatives are rated for each criterion.


The superdecisions model presented in this tutorial can be downloaded from here:


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