Abstract
The performance model interchange format (PMIF) is a common representation for data that reduces the number of custom interfaces required to move performance models among modeling tools. In order to manage the research scope, the initial version of PMIF was limited to Queueing Network Models (QNM) that can be solved by efficient, exact solution algorithms. The overall model interoperability approach has now been demonstrated to be viable. This paper broadens the scope of PMIF to represent models that can be solved with additional methods such as analytical approximations or simulation solutions. It presents the extensions considered, shows alternatives for representing them with a meta-model, describes the PMIF+ extended meta-model and its validation.
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