Download A Guide to selecting software measures and metrics by Capers Jones PDF

By Capers Jones

Going the place no publication on software program size and metrics has formerly long gone, this critique completely examines a few undesirable dimension practices, detrimental metrics, and large gaps and omissions within the software program literature that forget vital subject matters in dimension. The ebook covers the main gaps and omissions that must be stuffed 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 information and make benchmarks nearly lifeless and doubtless even damaging. essentially the most universal leaks is that of unpaid additional time. software program is a truly labor-intensive profession, and lots of practitioners paintings very lengthy hours. in spite of the fact that, few businesses really list unpaid time beyond regulation. which means software program attempt is underreported by way of round 15%, that is too huge a price to disregard. different resources 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 booklet is helping software program undertaking managers and builders discover mistakes in measurements to allow them to strengthen significant benchmarks to estimate software program improvement efforts. It examines diversifications in a couple of parts that come with:

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

Filled with tables and charts, this publication is a kick off point for making measurements that replicate present software program improvement practices and realities to reach at significant benchmarks to steer profitable software program tasks.

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Additional info for A Guide to selecting software measures and metrics

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A third personnel factor with a strong influence is that of unpaid overtime. Unpaid overtime has a tangible impact on software costs, and a more subtle impact on software schedules. 4 Impact of team experience on software development productivity. 42 ◾ A Guide to Selecting Software Measures and Metrics difficult to study this situation without interviewing development teams. 3 shows the probable impact of unpaid overtime. Unpaid overtime is seldom measured, and this causes problems for estimation and also with using historical data as benchmarks.

Variations due to Inaccurate Software Metrics That Distort Reality ◾ 49 There are some effective software benchmark organizations that use function point metrics for productivity and quality studies, but all of these collectively have a few thousand clients only. Some of these benchmark groups include The International Software Benchmarking Standards Group (ISBSG), the Quality/Productivity Management Group, Davids’ Consulting Group, Software Productivity Research (SPR), TI Metricas in Brazil, Quantitative Software Management (QSM), and Namcook Analytics LLC.

With 10 people, communications would cause confusion and probably stretch the schedule to two months, hence doubling the effort. One person might not have all of the necessary skills, so the schedule might slip to 12 calendar months. 5 months would probably deliver the optimal result. As mentioned, Fred Brooks’ classic book, The Mythical Man-Month, made this concept famous, and also has one of the best software book titles of all time. Fred is also famous for the phrase no silver bullet to highlight the fact that no known methodology solves all software engineering problems.

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