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Quality-Diversity Stress Tests for Process Reward Models:What Archive Coverage Can and Cannot Certify
arXiv cs.LG — Machine Learning
Factual evidence
What the source reports
New research uses quality-diversity search to stress-test Process Reward Models by finding edits that trick step-wise scoring.
Open sourceOneBench interpretation
Institutional assessment
So what
Process reward model gaming compromises step-by-step reasoning reliability, creating hidden failure modes in enterprise decision agents.
Do what
Ask model risk validation teams to evaluate quality-diversity stress testing for any internal process reward models.