SIF8018 Systemutvikling, spring 1999

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SIF8018 Systemutvikling, spring 1999

• Exercise 8 - Process improvement
• Roxana Diaconescu

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Exercise formulation

• 8.1 Common basic metrics for all development
  processes.
• 8.2 GCM analyze for identifying a suitable metric
  for the cost/benefit of inspection v.s. testing
  and error finding.
• 8.3 Important factors for a successful
  improvement task.
• 8.4 Why is reuse important for improvement
  technology?
• 8.5 Why is inspection important for improvement
  technology?
• 8.6 The contribution of ISO-9001 standard to real
  improvement (not only certification).

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8.1.Common basic metrics for all development
processes.

• Example of the most used metrics
• size (LOC), defects, effort
• time, developers number
• tools, platforms, application area
• defects in 6th months of use, defects during
  test, etc..
• Specific metrics
• depend on the goal, e.g. reuse factor.

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8.2.GCM analyze for identifying a suitable metric
for the cost/benefit of inspection v.s. testing
and defects finding

• GQM schema

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8.3.Important factors for a successful
improvement task

• Good understanding of the market/customer.
• Good understanding of the corresponding
  organizational strategy.
• Commitment from top, among line managers and
  developers.
• Choose of SPI framework adequate for the
  underlying process/organization.
• Organize the experience DB.
• Introduce reuse, inspections, depending on the
  maturity level the organization corresponds to.

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8.4.Why is reuse an important improvement
technology?

• Because REUSE
• saves time and resources
• provides for better reliability, productivity
• identifies needs, makes improvement plan
• sum up after one project, disseminate results,
  revise overall improvement plan.
• Advantages/disadvantages
• more than 2/3 gain also for domain-specific
  software - see the examples in compendium
• involves two-phase delay in software reuse
• train people and acquire technology
• invest in reusable components without any
  guarantee that it will pay off.

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8.5.Why is inspection important for improvement
technology?

• Because it has all SPIs essentials
• well defined process model, easy to learn
• fast improvement expected
• known metrics no of defects
• applicable on most documents and development
  methods
• facilitates team work
• if works, gives huge benefits 10 cost, 20
  savings, 2/3 defects found before test, etc..

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8.6.The contribution of ISO-9001 standard to real
improvement (not only certification)

• Formalizing goals and recommended procedures.
• How to avoid building a big quality (documented
  procedures), I.e. how to get this in use.