The capability maturity model: guidelines for improving the software process
The capability maturity model: guidelines for improving the software process
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This paper proposes modifications to the validation process maturity model (VPMM) that were derived from the lessons learned from several use cases and community feedback. Like the original VPMM, this model begins where users demand absolutely no information about the validity of the models they desire to apply. The first layer of maturity, where the validation process plays any role at all, is supported by subject matter experts (SMEs) opinions, an assessment that depends entirely upon subjective sources of requirements, referent and validity judgments. The next layer describes a process that primarily improves the specification of the required functional inventory. The next two layers progressively improve the objectivity and detail of the validation process, primarily by leveraging rigorous descriptions of simulation fidelity. The final maturity layer posits a validation process that does not currently exist. The process at this level of maturity applies rigorous mathematical techniques to transform informal user needs statements into formal acceptability criteria then continue to apply formal techniques to prove conceptual model and simulation results validity and, ultimately, to develop the acceptance recommendations. At this final state of maturity, only the user introduces subjectivity into the validation process, an inescapable error source for simulation validity.