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Applied Software Measurement: Global Analysis of Productivity and Quality by Capers Jones

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Variations in Application Size and Productivity Rates
It is interesting to experiment with the 20 variations of function point metrics and try them on the same projects. The following two tables of comparative data should be viewed as “thought experiments” rather than as actual counts of function points. The function point sizes are speculative and based on merely reading the counting rules and the supporting documents that describe the various methods. The results are not based on actual counts using the methods. Actually counting the same application using all 20 methods would require about two weeks of work. The applications themselves, although hypothetical, are derived from actual projects studied by the author in the past.
Three different ...

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