### Modelling:

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- Software_Engineering (40)

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- Mathematics (19)

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- Reflections on Abstractions (14)
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# Tag Archives: Modelling

## Practical Software Analysis vs. Design Modelling

Practical modelling in software analysis differs significantly from design. The IMHO main differences are highlighted here. Continue reading

## The Killer Application of Software Modelling

From my experience as a business analyst (BA) I would say: checking or transforming models is interesting and important, but the real killer application of a model in software development is (simply) talking about it. Continue reading

Posted in Requirements, Software_Engineering
Tagged Business Analyst, customer collaboration, IIBA, IREB, managing complexity, model, Modelling, Requirements, Requirements Analysis, Requirements Engineering, Requirements Modeling, software development, software modelling, software requirements
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## A simple relational Model

Modelling foundations: What does a simple diagram ‘thing – relation – thing’ say, in terms of logic? Continue reading

## Categories of semantic Models by Stachowiak

Categorisation by example of semantic models, i.e. models as we use them in software engineering etc, according to Herbert Stachowiak. Continue reading

Posted in Epistemology, Herbert Stachowiak, Requirements
Tagged abstraction, Allgemeine Modelltheorie, empirical models, Finite Model Theory, formal models, General Model Theory, Herbert Stachowiak, Modelling, modelling theory, Requirements Modeling, scientific models, semantic model, semantics, Semiology, Semiotics, Semology, Stachowiak
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## Unambiguous Requirements Models

We’ll see that the concept of ambiguity of (requirements in software engineering) models comprises structural as well as material aspects, on all model levels (top to bottom). Continue reading

## Stachowiak on semantic Requirements Modelling

Excerpt of Herbert Stachowiak’s “Allgemeine Modelltheorie” (General Model Theory). Although this is on empirical-scientific models, it provides a foundation of semantic requirements modelling. Continue reading

Posted in Epistemology, Herbert Stachowiak, Requirements
Tagged abstraction, Allgemeine Modelltheorie, empirical models, Finite Model Theory, formal models, General Model Theory, Herbert Stachowiak, jackson zave, michael a. jackson, Modelling, modelling theory, pamela zave, Requirements Modeling, scientific models, semantic model, semantics, Stachowiak
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## Modelling with Classes: Square and Rectangle revisited

Classic problem in class-modelling: how to express that a square is a special kind of rectangle? In order to deepen understanding, let us scrutinize the situation a bit closer here, using logical/ structural foundations of modelling: Continue reading

## Craftsman or Engineer?

A lot has been written on the differences between Craftsman and Engineer. Recently I came across a simple example by Hofstadter & Sander, that nicely shows the basic difference in thinking: Continue reading

Posted in Abstract Thinking, Software_Engineering
Tagged abstraction, analogy, craft, craftsman, craftsmanship, Douglas Hofstadter, Emmanuel Sander, engineer, engineering, Hofstadter, marking, model, Modelling, parallelogram, rectangle, rhombus, software engineering, square, surfaces and essences
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## Reflections on Abstractions: Subsumption I

We’re going to look at a subsumptional mapping from lhs original to rhs model. We will get four cases of subsumption as in figure (strictest cases), which now can be developed into a continuum with the four cases as corner points. Continue reading