DYNAMIC GLOBAL MODEL
| Collection | International Encyclopedia of Systems and Cybernetics |
|---|---|
| Year | 2004 |
| Vol. (num.) | 2(1) |
| ID | ◀ 990 ▶ |
| Object type | Methodology or model |
A complex model including numerous different variable factors and the interrelations among them, whose understanding is affected by variable degrees of uncertainty .
L. PITELKA et al., refering to Dynamic Global Vegetation Models write: “Because they are global in scope, these models are necessarily coarse in some respects” (1997, p.472).
This explains why the predictive value of these models is always more or less uncertain. Eventual disaggregation of such models into submodels does not eliminate uncertainties because it can be done only by suppressing some specific interrelations , i.e. a crucial part of the modelled global system.
The authors give very interesting examples of this type of situations.
There is a clear similarity with related problems in FORRESTER's Systems Dynamics .