Reference “IEEE 2430-2019-IEEE Trial-Use Standard for Non-Functional Sizing Measurements,” published October 19, 2019 ([1]).
Software development organizations can use their correlations between function points and their work effort, and between SNAP points and their work effort, to help forecast their software development costs and schedules and to audit projects to determine how well funding was spent and schedules were managed SNAP recognizes four categories and 14 subcategories of non-functional user requirements.
When compared to the function point process, which requires data to cross an application's boundary and maintain an internal logical file, the Help data may be coded to reside internally as part of the application development and be accessed upon command from the user.
[6] SNAP provides users and software development teams many benefits additional to the sole use of function points.
More research will hopefully improve the calibration of the subcategory weighting factors to yield an even stronger statistical correlation.
It is recommended that future research results be submitted to IFPUG's Non-functional Sizing Standards Committee (NFSSC) for review.
Buglione, Luigi, and Santillo, Luca, “NFR: L”Altra Meta Della Mela,” Newsletter, Gruppo Utenti Function Point Italia Italian Software Metrics Association, www.gufpi-isma.org, December 2011. International Function Point Users Group, “How Function Points and SNAP Work Together,” MetricViews, www.ifpug.org, Princeton Junction, NJ, 08550, USA, August 2015.
Jones, Capers, “A Guide to Selecting Software Measures and Metrics,” CRC Press, Boca Rotan, FL, 33487, USA, 2017.
Jones, Capers, “Quantifying Software Global and Industry Perspectives,” CRC Press, Boca Rotan, FL, 33487, USA 2018.