Hello All
does anyone have any thoughts about what constitutes 'Good Modelling Parctice'? So for example if modelling using a EPC model what type of things would one look for when reviewing the model?
Many thanks in advance
Rob
5 Replies
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Accuracy, precision, consistency, applicability (that the model is appropriate for the intended purpose).
You have to build a practice around this with a method (constrained by a filter), some reference models, and training.
my 2 cents anyway
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You can look at this list, I find it very useful : http://www.idiagram.com/ideas/models.html
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Another thing to keep in mind when creating models (like an EPC) is the quote from Rudyard Kipling:
"I have six friends that serve me true
Their names are Why and What and When
and How and Where and Who."
The order of importance in an EPC would be more like "Who does what, When" and than later on complemented by "How, why and with what".
In our system we use columns in our EPC model to order the items:
- Responsible: who
- Input: with what
- Acitivities: what
- Output: with what (result)
- Control: Why (these are e.g. indicators or risks)
- Comments: How (text explaining how an activity is performed. is actually the description/defintion attribute of a function (activity) object)
cheers,
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Hi,
I would like to add the Seven Process Modeling Guidelines (7PMG). The Paper uses an EPC as modeling example.
"Available modeling frameworks and guidelines provide insight into the major quality categories, but remain too abstract to be directly applicable in practice. Against this background, we propose a set of seven guidelines for process modeling, called 7PMG. Each of its elements is based on findings from sound quantitative research into the relationship between process modeling styles on the one hand and both model understanding and error-proneness on the other. In this way, 7PMG not only contrasts earlier work that has been criticized for its lack of empirical foundation. It also offers guidance that practitioners can apply in their business-process centered initiatives straightaway."
J. Mendling, H.A. Reijers, W.M.P. van der Aalst (2009): Seven Process Modeling Guidelines (7PMG). http://wwwis.win.tue.nl/~wvdaalst/publications/z7.pdf
BR,
Andreas Horn -
The key (to me) for modeling is consistency:
Define your rules and enforce them. If all models are done wrong, but done wrong consistently you can change them. If they are inconsistent-good luck.
rgds
donald