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Alvaro Chaveste-Fernandez

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#small language model Open access Sep 2026

Subset Heterogeneity in Reward Model Benchmarks: A CONFIRM Validation of 174 RewardBench 2 Models

Background. RewardBench 2 aggregates pairwise preference accuracy across heterogeneous task families (factuality, instruction following, safety, and others). A single leaderboard score can mask systematic subset specialization, yet standard benchmark reporting rarely tests whether accuracy is independent of task catego...

Alvaro Chaveste-Fernandez · 0 citations
#generative ai Open access Sep 2026

Subset Heterogeneity in Reward Model Benchmarks: A CONFIRM Validation of 174 RewardBench 2 Models

Background. RewardBench 2 aggregates pairwise preference accuracy across heterogeneous task families (factuality, instruction following, safety, and others). A single leaderboard score can mask systematic subset specialization, yet standard benchmark reporting rarely tests whether accuracy is independent of task catego...

Alvaro Chaveste-Fernandez · 0 citations

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