Contents ◾ xv
Defect Detection by Reviews ...................................................................312
New Trend ...............................................................................................313
Weibull Model for Defect Prediction—Success Factors ...........................314
Review Questions ....................................................................................316
Exercises ..................................................................................................316
References ................................................................................................316
20 Gumbel Distribution for Extreme Values ...........................................319
A Science of Outliers ................................................................................319
Gumbel Minimum PDF ..........................................................................321
Gumbel Parameter Extraction—A Simple Approach ...............................322
Gumbel Minimum: Analyzing Low CSAT Scores ...................................323
Gumbel Maximum: Complexity Analysis................................................324
Minima Maxima Comparisons ................................................................325
Analyzing Extreme Problems ...................................................................328
Review Questions ....................................................................................329
Exercises ..................................................................................................330
References ................................................................................................330
21 Gompertz Software Reliability Growth Model ..................................331
S Curves ..................................................................................................331
Modeling Reliability Growth with Gompertzian S Curves ......................332
Building a Reliability Growth Curve .......................................................334
Gompertz Software Reliability Growth Model Curves ............................334
Dimitri Shift ...................................................................................336
Predicting with the Gompertz Model ......................................................337
More Attempts on Gompertzian Software Reliability Growth Model
(SRGM) ...................................................................................................339
Stringfellow and Andrews ...............................................................339
Zeide ............................................................................................. 340
Swamydoss and Kadhar Nawaz ..................................................... 340
Arif et al. ....................................................................................... 340
Anjum et al. .................................................................................. 340
Bäumer and Seidler ........................................................................ 340
Ohishi et al. .................................................................................. 340
How to Implement Gompertz Model in Software Testing .......................341
Gompertz Curve versus GO NHPP Model ............................................ 344
Review Questions ....................................................................................345
Exercises ..................................................................................................345
References ................................................................................................345
Suggested Readings ................................................................................ 346
Index ...........................................................................................................347
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