QUALITY MODELS AND MEASUREMENTS

QUALITY MODELS AND MEASUREMENTS

1. The primary purpose of the measurement and analysis activities is to provide feedback and useful information to manage software quality, the quality engineering process, and the overall software development/maintenance process and activities.

2. MODELS FOR QUALITY ASSESSMENT

   • We define quality assessment models as analytical models that provide quantitative assess- ment of selected quality characteristics or sub-characteristics based on measurement data from software projects.

3. GENERALIZED MODELS

   • An overall model provides a single estimate of overall product quality.
   • A segmented model provides different quality estimates for different industrial seg- ments
   • A dynamic model provides quality trend or distribution over time or development phases.
   • Overall models
   • Segmented models
   • Dynamic models

4. PRODUCT-SPECIFIC MODELS

   • Semi-customized models
   • Observation-based models
   • Measurement-driven predictive models

5. MODEL COMPARISONAND INTERCONNECTIONS

   • Usefulness of the modeling results
   • Model inter-connection

6. DATA REQUIREMENTS AND MEASUREMENT

   • Generalized models are based on industrial averages and general profiles for all the products or for a specific product segment
   • Product-specijic models use product specific measurement data to make better quality assessments and predictions, which are given in the form of values or ranges of selected direct quality measurements