Weakly-Structured Domains

Decision-making support systems are used for managing objects in weakly-structured domains. These domains are characterized by the following specific features:
Weakly-Structured Domains

Objects in weakly-structured domains are unique. A system to manage data on these objects is, in fact, created only once, for solving real specific problems, so its extrapolation to other objects either requires considerable efforts or is impossible.

In systems not created by humans, for example, ecological, environmental, social or administrative systems, there is no functioning goal, which can be formalized. Functioning of such systems is targeted at maintaining their general performance or keeping certain parameters within pre-defined bounds, but, as a rule, it is impossible to formalize such a goal in the form of a certain criterion. For instance, in an environmental (ecological) system all factors influencing its functioning are so numerous, and connections between them are so complicated and incomprehensible, that setting some function to describe a functioning goal for such a system is an unrealizable task in essence.

Since there is no functioning goal which could be formalized, it is also impossible to construct a function, which could be optimized, in order to ensure the best mode of objectís functioning. There is no target function, just certain factors which can be optimized. But each factor cannot be optimized separately, because all factors are closely connected with each other, and these connections would be violated during optimization. This can damage the process, regulating the system and maintaining it in a stable state in relation to changing environment of the systemís functioning or even lead to catastrophic outcomes and irreversible changes in the system.

Dynamic nature means that objectís structure and functioning are changed with time, i.e., the object evolves. Management of such a system should be adaptive, capable of changing in case of object change.

Description incompleteness relates to inaccuracy, incompleteness, uncertainty and unreliability of object description data.

Management objects could be people exercising their free will. It is often impossible to predict behaviour of an individual as a management object, and as a component of a system. An individual acts within a system, according to his/her specific features, objectives and interests. That is why it is problematic to consider human behaviour while modelling a management object.

Examples of weakly-structured domains:

        and others.