Assessing Quality Processes with ODC COQUALMO

  • Raymond Madachy
  • Barry Boehm
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5007)


Software quality processes can be assessed with the Orthogonal Defect Classification COnstructive QUALity MOdel (ODC COQUALMO) that predicts defects introduced and removed, classified by ODC types. Using parametric cost and defect removal inputs, static and dynamic versions of the model help one determine the impacts of quality strategies on defect profiles, cost and risk. The dynamic version provides insight into time trends and is suitable for continuous usage on a project. The models are calibrated with empirical data on defect distributions, introduction and removal rates; and supplemented with Delphi results for detailed ODC defect detection efficiencies. This work has supported the development of software risk advisory tools for NASA flight projects. We have demonstrated the integration of ODC COQUALMO with automated risk minimization methods to design higher value quality processes, in shorter time and with fewer resources, to meet stringent quality goals on projects.


quality processes defect modeling orthogonal defect classification COQUALMO COCOMO system dynamics value-based software engineering 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Raymond Madachy
    • 1
  • Barry Boehm
    • 1
  1. 1.University of Southern California Center for Systems and Software EngineeringLos AngelesUSA

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