Qualitative Multi-Attribute Model
=================================

:doc:`DEXi <DEXi>`'s :doc:`multi-attribute models <DEXiGlosMAMod>` are
called *qualitative*. They are characterized by:

-  using qualitative (symbolic) :doc:`attributes <DEXiGlosAttr>`, whose
   :doc:`scales <DEXiGlosScale>` are discrete and typically consist of
   words rather than numbers,
-  employing :doc:`utility functions <DEXiGlosFunct>` that are
   represented by (tables of) decision rules rather that numerical
   formulae.

Here, the word "qualitative" is used for contrast with more traditional
"quantitative" :doc:`decision models <DEXiGlosDMod>`, which are
characterized by:

-  using continuous numerical attributes, which typically represent the
   decision-maker's preferences, and
-  using numerical utility functions, such as the weighted sum.

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