First live run of the valid detection benchmark. Labels come from the fix
site (fix^1), never SZZ.
- 32 held-out Python/JS advisories sourced from the public pool-p1 set,
CWE + text from OSV. 133 candidate locations -> 125 after dropping
tests/minified.
- 125 DeepSeek verification calls: 31 locations passed all three checks
(vulnerable pre-fix, fix addresses it, reachable in-repo) across 12 repos.
- Maintainer spot-check accepted all 12.
- 20 ordinary negatives per positive change from the same repos, 240 total.
- Held-out guard: 0 dropped against the training-only used set.
- Frozen manifest at benchmarks/valid/pilot/ (252 changes), provenance and
NOTES under benchmarks/measurements/2026-10-12-valid-benchmark-pilot/.
Three fixes found by the live run:
- catalog.py: skip a site the fix renamed or removed instead of aborting.
- assemble.py: negative ratio counts positive changes, not accepted
functions (malla would have demanded 260 negatives). Test updated.
- held-out guard: run against training sources only; build_used() also
scans measurements/populations, which flagged the 12 repos via my own
SZZ-pool analysis outputs (circular).
Replay and metrics not yet run; see NOTES.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
