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How long does it take to build a model?

April 28, 2014
by SD
Comments are off

The modeling effort can be broken in four phases:
1. Getting to know the system being modeled, the different ways it can fail, and how the failures manifest themselves (symptoms, error-codes, tests).
2. Capturing the relationships in the TEAMS tool (the actual modeling).
3. Adding reference material and instructions on how to perform individual steps of troubleshooting.
4. Verification and validation of the diagnosis and troubleshooting strategy generated by the reasoner.

Different customers take different amount of time at the various steps — especially since some of the steps are related to how well the organization captures and documents knowledge, and how accessible the information is to the modeler. Based on our experience, a typical system takes one or two man-months to model. As a rule of thumb, each test or fault takes one hour to model, and therefore, a typical system with up to three hundred error codes and manual tests will take under 2 person-months.

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