A Guide to selecting software measures and metrics by Capers Jones

By Capers Jones

Going the place no ebook on software program dimension and metrics has formerly long past, this critique completely examines a few undesirable dimension practices, damaging metrics, and large gaps and omissions within the software program literature that forget very important themes in dimension. The ebook covers the key gaps and omissions that must be crammed if information approximately software program improvement is to be precious for comparisons or estimating destiny projects.

Among the worse gaps are leaks in reporting approximately software program improvement efforts that, if no longer corrected, can distort facts and make benchmarks nearly lifeless and doubtless even damaging. essentially the most universal leaks is that of unpaid extra time. software program is a truly labor-intensive career, and lots of practitioners paintings very lengthy hours. even if, few businesses truly checklist unpaid additional time. which means software program attempt is underreported by way of round 15%, that is too huge a cost to disregard. different assets of leaks comprise the paintings of part-time experts who come and pass as wanted. There are dozens of those experts, and their mixed attempt can best forty five% of overall software program attempt on huge projects.

The publication is helping software program undertaking managers and builders discover blunders in measurements to allow them to improve significant benchmarks to estimate software program improvement efforts. It examines adaptations in a few components that come with:

  • Programming languages
  • Development methodology
  • Software reuse
  • Functional and nonfunctional requirements
  • Industry type
  • Team dimension and experience

Filled with tables and charts, this ebook is a place to begin for making measurements that mirror present software program improvement practices and realities to reach at significant benchmarks to lead profitable software program tasks.

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7. 8. 9. 10. 11. 12. 13. 14. 1 Development Activities for Six Project Size Plateaus 10 Function Points ◾ Activities Performed 18 A Guide to Selecting Software Measures and Metrics X X 6 9 18 5 Activities 22 23 X X X 25. Project management X X X 24. Installation/training X X X X X X X X X 100,000 Function Points 23. Quality assurance 22. Independent testing X 21. Acceptance testing X X X X X X X 10,000 Function Points 20. Beta testing X 19. System testing X X X X X 1,000 Function Points 18. Integration testing 17.

8 are just the surface manifestation of a deeper issue. After more than 50 years, the software industry lacks anything that resembles a standard chart of accounts for collecting historical data. This lack is made more difficult by the fact that in real life, there are many variations of activities that are actually performed. There are variations due to application size, and variations due to application type. Chapter 2 Variations in Software Activities by Type of Software In many industries, building large products is not the same as building small products.

A rowboat can be constructed by a single individual using only hand tools. But a large modern cruise ship requires more than 350 workers including many specialists such as pipe fitters, electricians, steel workers, painters, and even interior decorators and a few fine artists. Software follows a similar pattern: Building large system in the 10,000 to 100,000 function point range is more or less equivalent to building other large structures such as ships, office buildings, or bridges. Many kinds of specialists are utilized, and the development activities are quite extensive compared to smaller applications.

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