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A simple measure of software dependency freshness. It is a single number telling you how up-to-date your dependencies are.
Taken together, they can help prioritize maintenance for an inherited app, or help maintain a baseline level of dependency freshness for an ongoing project. J. Cox, E. Bouwers, M. van Eekelen and J. Visser, Measuring Dependency Freshness in Software Systems. In Proceedings of the 37th International Conference on Software Engineering (ICSE 2015), May 2015 https://ericbouwers.github.io/papers/icse15.pdf
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