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Maintainability Model

The Maintainability Model of SIG combines several important source code metrics into a single rating of the maintainability of a software product.
     
     
The model was originally developed as an improvement over the classic Maintainability Index of Paul Oman and others.

In collaboration with Delft University of Technology and the University of Amsterdam, several empirical studies have been conducted on the model. These studies validate the strong predictive effect that the model has for the efficiency of development and maintenance tasks, such as resolution of defects and implementation of enhancements.

The Maintainability Model is used by SIG to determine software product quality in software risk assessments and during software monitoring. The models is also the basis for the Trusted Product Maintainability certificate that is issued by TÜV Informationstechnik in collaboration with SIG.

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