6000.0.84f1
LTS · Released Sep 16, 2026 · Changeset 78ab6fc243d5 · 0 release notes
52build scorehigher = better
050100
Upgrade risk+28Net cleanup+16Live debt+9
cohort: LTS (325)
How this number is computed
Composite = sum of sub_score × weight across six metrics. Sub-scores are percentile-rank(log1p(min(raw, p95))) within the LTS cohort (325 releases). Sub-scores for lower-is-better metrics are flipped to 100 − percentile.
| Sub-score | Formula | Raw | Clip | %ile | Weight | Score | Contrib |
|---|---|---|---|---|---|---|---|
| Breaking surface | (breaking_change + api_change) / total_notes | 0 | 0 | 30 | 25% | 70 | 17.4 |
| Blocker rate | blockers / total_notes | 0.097 | 0.097 | 87 | 15% | 13 | 2.0 |
| Mobile risk | mobile_known_issues / total_notes | 0 | 0 | 16 | 10% | 84 | 8.4 |
| Fix density | fixes / total_notes | 0.677 | 0.677 | 68 | 15% | 68 | 10.1 |
| Net-fix delta | ((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes | -0.065 | -0.065 | 38 | 15% | 38 | 5.6 |
| Known-issue debt | known_issues / total_notes | 0.161 | 0.161 | 56 | 20% | 44 | 8.8 |
| Composite | 52 | ||||||
* = raw value was clipped at the cohort 95th percentile to prevent outliers from compressing everyone else's scores. Sub-scores marked "med" substitute the cohort median where the input was missing (e.g. first patch on a minor line has no prior patch for net-fix delta).