Decision Problem
================

In :doc:`Decision Analysis <DEXiGlosDAnal>`, a *decision problem* is
understood primarily as a *problem of choice*, which is defined as
follows:

-  Given a set of options (also called alternatives), which typically
   represent some object or actions, either
-  *choose* an option that best satisfies the goals (objectives) of the
   decision maker, or
-  *rank* the options according to these goals.

Making a choice usually occurs as part of a :doc:`decision
process <DEXiGlosDProc>`.

Decision Analysis and :doc:`DEXi <DEXi>` are particularly interested in
*complex* decision problems, that is, problems which are for some reason
considered difficult by the decision maker and require careful
elaboration and analysis. Complex decision problems are usually
characterized by:

-  Novelty: the decision maker is confronted with the problem for the
   first time and has insufficient knowledge or skills to address the
   problem;
-  Unclearness: unclear understanding of the problem and its goals,
   unknown or incompletely defined options;
-  Uncertainty: existence of possible events that cannot be controlled
   by the decision maker, but can affect the decision or its
   consequences (for example: competition response, weather);
-  Multiple and possibly conflicting goals;
-  Group decision-making: involvement of different decision-makers or
   groups that have different and possibly conflicting goals;
-  Important consequences of the decision (such as possible big
   financial losses or environmental impacts);
-  Limited resources to conduct the decision process (most often:
   available time and expertise).

.. toctree::
  :hidden: