Problems of Qualitative Change of Parameters in Different Hierarchical Levels
Extent and aggregation level of the model is fixed (inflexible models)
The model will be internally generated from database. The extent of the model can be changed by addition or omission of homogenous elements (quantitatively variable models)
An advantage in modelling complex connections in hierarchically built systems can be achieved, if it is possible to generate models from a homogenous database not only by addition or omission of single elements but also to choise the hierarchical level. The problem in this type of procedure is, that a change of hierarchical level is connected with aggregation or disaggregation of elements- This can lead to a change of properties of parameters.
KeywordsExpert System Hierarchical Level Single Element Aggregation Level Abstraction Level
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