Evidence Absence Is Not Evidence Insufficiency: Diagnosing NEI Construction Artifacts in Fact Verification

In three linesNEI-CAP, a diagnostic protocol to audit the construction of "Not Enough Information" labels in fact verification benchmarks. Researchers show NEI competence does not transfer reliably across constructions: models trained on shortcut-prone evidence conditions fail to recognize semantically related insufficient evidence. Tested on SciFact, FEVER, and HoVer.

Summary generated by Claude — human-verified