The traceability of bugs means being able to find which bugs were opened and closed, and described by developers in the development logs.
Open source projects are particularly bad at that. A sample of over 300 projects shows that the bug coverage ratio (how many bugs are found in both bug tracker and development logs) reaches 30% in average.
Using both sets of bug IDs (from bug tracker and development logs) would increase the number of bugs available to study and model a development and maintenance process. How many studies could be updated in their conclusion using this approach?
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