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The Assessment Approach

A process capability measurement method is introduced to assess the level of process implementation within an organization.

The method determines a capability rating for an organization and assesses each process against product quality characteristics such as functionality, usability, reliability and efficiency.

  • The functionality assesses the process compliance, its completeness and suitability.
  • The usability mainly focuses on the understandability, learnability and operability aspects of a process.
  • The reliability is defined by the process fault tolerance and its maturity.
  • The efficiency rates the process performance in terms of time behavior or the resource utilization.

Thus, the measurement model delivers the nearest mapping of the framework to the actual processes on an aggregated level.

A questionnaire was developed to evaluate applied processes, which is available online at

QAfOSS Assessment Model

Each existing process is evaluated with eight Process Capability Scores (PCS), while maximum eight additional PCSs can be obtained for the evaluated process characteristics, such as functionality (-4 to +4), usability (-1 to +1), reliability (-1 to +1) and efficiency (-2 to +2). “Under fulfillment” is penalized with negative scores, while “over fulfillment” is rewarded. For instance, a poor process may be down-graded to zero. In total, 23 processes are assessed, which gives a maximum of 368 PCSs. An individual importance factor is used to weight the results.

the_assessment_approach.txt · Last modified: 2008/11/09 14:29 by otte
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