Alternatives
Alternatives are basic entities studied in a decision problem. Depending on the problem, they can represent different objects, solutions, courses of action, etc., which are evaluated and analyzed by a DEX model.
In DEXi Suite, each alternative is represented by its:
name (not necessarily unique),
description: optional, possibly longer description of the alternative,
a set of values, so that one value is assigned to each attribute in the tree of attributes.
The set of values is further partitioned into:
alternative description: vector of values assigned to basic attributes;
intermediate evaluation results: values assigned to aggregate attributes other than the roots of the tree;
final (or overall) evaluation results: values assigned to the root(s) of the tree.
Values assigned to attributes are of different types, collectively referred to as DEX values.