Symbolic Objects

In the previous Chapter, we have presented various types of symbolic data. We recall that these data types are generalizations of classical data types in the following respects: The set E of ‘objects’ or ‘elements’ for which the variables are defined is not necessarily a universe Ω of individuals,but may also be a system {C₁,…, C _m } of classes of individuals;The properties of each object u of E are described by symbolic variables Y₁, …, Y _p which are typically: multi-valued, interval-type or modal (probabilistic) variables.