Artificial Intelligence #llm#verification
Structural Heterogeneity in LLM Verification: Signal Quality Varies Across Cost Strata
A recent paper on arXiv identifies a fundamental failure mode in LLM verification: uncertainty signals are heteroskedastic across cost strata, with some error-concentrating regions exhibiting near-random discriminability. The authors propose a cost-stratified thresholding intervention (CST) that improves hit rate by up to 17 percentage points without gradient updates, showing that structural heterogeneity, not optimizer weakness, is the primary bottleneck.
Jun 16, 2026 1 source