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Reliability growth (when to stop testing)
Estimate how many defects remain from the weekly trend of defects found.
Quality & testingHow it's worked out
- Weekly found ≈ a × r^week, fitted by least squares on log counts. Total ≈ a ÷ (1 − r). Remaining = total − found
- Constant test effort; defects fixed without adding new ones
NoteThis fits an exponential decline, a simplified Goel-Okumoto model. It assumes test effort stays similar each week; a drop in testing also lowers the count.
Source: Goel and Okumoto (1979) software reliability growth model
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