### Modelling:

### Tweets

- RT @seidewitz: @abstratt @UltraDark Sparx EA uses an underlying DB schéma that is still based on UML 1.4. Rhapsody was originally a state c… 2 weeks ago
- My personal fav is (of course) the Abstract-O-Meter :o) modeling-languages.com/essential-soft… #niemann #abstraction 2 weeks ago

# Tag Archives: aggregation

## Reflections on Abstractions: Adjacent Rooms

Example of an abstraction by subsuming directly connected nodes in the original into a single node in the model. This corresponds to a situation where structures of wall are abstracted to rooms with the neighborhood relation. Continue reading

## Reflections on Abstractions in Relational Structures. The very basic Setting.

Abstractional concepts can be found in the very basics of Graph Theory and Formal Concept Analysis. They provide the basic elements of Classification, Aggregation and Generalisation for a deeper rigorous analysis of Abstractions. Continue reading

Posted in Mathematics, Reflections on Abstractions
Tagged abstraction, abstraction awareness, aggregation, classification, component, concept analysis, connectivity, formal concept analysis, formal methods, generalisation, Graph Theory, model, modeling, modeling theory, module, refinement, reflections on abstractions, ROA
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## Reflections on Abstractions: Generalisation and Aggregation

Abstraction Awareness is about gaining a deeper understanding of abstraction. With basic means of Graph Theory we diff among two kinds of abstraction: abstraction wrt. generalisation and aggregation. Continue reading